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railcar_reporting_mark_codes.tsv
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| AA | Ann Arbor Railroad | |
|---|---|---|
| AALX | Advanced Aromatics LP | |
| AAMX | ACFA Arrendadora de Carros de Ferrocarril S.A. | |
| AAR | Association of American Railroads | |
| AATX | Ampacet Corporation | |
| AB | Akron and Barberton Cluster Railway Company | |
| ABB | Akron and Barberton Belt Railroad Company | |
| ABBX | Abbott Labs | |
| ABIX | Anheuser-Busch Incorporated | |
| ABL | Alameda Belt Line | |
| ABOX | TTX Company | |
| ABRX | AB Rail Investments Incorporated | |
| ABWX | Asea Brown Boveri Incorporated | |
| AC | Canadian National (Algoma Central Railway) | |
| ACAX | Honeywell International Incorporated | |
| ACBL | American Commercial Barge Lines | |
| ACCX | Consolidation Coal Company | |
| ACDX | Honeywell International Incorporated | |
| ACEX | Ace Cogeneration Company (Calif.) | |
| ACFX | General Electric Rail Services Corporation (ACF industries) | |
| ACGX | Suburban Propane LP | |
| ACHX | American Cyanamid Company | |
| ACIS | Algoma Central Railway Incorporated | |
| ACIX | Great Lakes Chemical Corporation | |
| ACJR | Ashtabula Carson Jefferson Railroad Company | |
| ACJU | American Coastal Lines Joint Venture Incorporated | |
| ACL | CSX Transportation Incorporated (Atlantic Coast Line) | |
| ACLU | Atlantic Container Line Limited | |
| ACLX | American Car Line Company | |
| ACMX | Voith Hydro Incorporated | |
| ACNU | AKZO Chemie B V | |
| ACOU | Associated Octel Company Limited | |
| ACPX | Amoco Oil Company | |
| ACPZ | American Concrete Products Company | |
| ACRX | American Chrome and Chemicals Incorporated | |
| ACSU | Atlantic Cargo Services AB | |
| ACSX | Honeywell International Incorporated | |
| ACSZ | American Carrier Equipment | |
| ACTU | Associated Container Transport (Australia) Limited | |
| ACTX | Honeywell International Incorporated | |
| ACUU | Acugreen Limited | |
| ACWR | Aberdeen Carolina and Western Railway | |
| ACWZ | Union Pacific Railroad Company | |
| ACXU | Atlantic Cargo Services AB | |
| ACXX | Anderson Columbia Company Incorporated | |
| ACY | Norfolk Southern Railway Company (Akron, Canton & Youngstown) | |
| ACZX | Norfolk Southern Railway Company | |
| ADBF | Adrian and Blissfield Rail Road Company | |
| ADCU | Flexi-Van Leasing Incorporated | |
| ADKU | AGA A/S | |
| ADMX | ADM Transportation Company | |
| ADN | Arkansas Louisiana and Mississippi Railroad Company | |
| ADRX | Addeleston Recycling Corporation | |
| ADSX | Andrew Merrilees Limited | |
| AEC | Atlantic and East Carolina Railway Company | |
| AECX | Associated Electric Cooperative Incorporated (Mo.) | |
| AEFR | Aurora Elgin and Fox River Electric | |
| AEIX | Alan Eslisk | |
| AEIZ | Farrell Lines Incorporated | |
| AEPU | American Lines Incorporated | |
| AEPX | American Electric Power Service (Ind., Mich., Ohio) | |
| AERC | Albany and Eastern Railroad Company | |
| AESX | General Electric Rail Services Corporation | |
| AEVX | AKZO Coatings Incorporated | |
| AEX | Andersons | |
| AF | Alabama and Florida Railway Company | |
| AFCU | Afram Lines Incorporated | |
| AFCX | Atel Leasing Corporation | |
| AFCZ | Afram Lines Limited | |
| AFIU | ABS Industrial Verification Incorporated | |
| AFIX | FIXCOR Industries Incorporated | |
| AFIZ | Agmark Foods | |
| AFLR | Alabama and Florida Railroad Incorporated | |
| AFPX | Honeywell International Incorporated | |
| AFRX | AF Railway Industries Incorporated | |
| AFSX | Astoria LLC | |
| AG | Galveston Railroad L.P. | |
| AGCR | Alamo Gulf Coast Railroad Company | |
| AGCX | Procor Limited | |
| AGEX | NOVA Chemicals Limited | |
| AGHX | Agrium U.S. Incorporated | |
| AGIX | AGRI Industries | |
| AGLF | Knoxville and Holston River Railroad Company Incorporated | |
| AGLX | Andrews Petroleum Incorporated | |
| AGMX | Terra Nitrogen Limited Partnership | |
| AGPX | Ag Processing Incorporated | |
| AGR | Alabama and Gulf Coast Railway LLC | |
| AGRD | A and G Railroad LLC | |
| AGRX | Agrifos LLC | |
| AGS | Alabama Great Southern Railroad Company | |
| AGYX | Centrex Construction Products Inc (American Gypsum Company) | |
| AHCX | Arcadian Corporation | |
| AHMX | Altos Homos de Mexico SA de CV | |
| AHW | Fox Valley and Western Limited | |
| AHWZ | Fox Valley and Western Limited | |
| AIDU | Albermarle Corporation | |
| AIEU | Aviation Import Export Incorporated | |
| AIIZ | III Transportation | |
| AINX | TTX Company - Acorn Division | |
| AIPX | Atlas Iron Processors Incorporated | |
| AIRX | American International Rail Services LLC | |
| AITU | Western Intermodal | |
| AJCU | Australia Japan Container Line | |
| AJPX | North American Chemical | |
| AKDN | Acadiana Railway Company | |
| AKFX | AKF Corporation | |
| AKLU | K Line | |
| AKMD | Arkansas Midland Railroad Company | |
| AKMX | HELM Financial Corporation | |
| AKZX | AKZO Nobel Chemicals Incorporated | |
| AL | Almanor Railroad Company | |
| ALAB | Alabama Railroad Company | |
| ALAX | Equistar Chemicals LP | |
| ALCX | Alcan Smelters and Chemicals Limited | |
| ALEX | AGRI Industries | |
| ALLX | Alliance Machine Company | |
| ALLZ | Alliance Shippers Incorporated | |
| ALM | Arkansas Louisiana and Mississippi Railroad Company | |
| ALMX | Trinity Rail Management Incorporated | |
| ALNX | Alberta Government | |
| ALPX | Alberta Government | |
| ALQS | Aliquippa and Southern Railroad Company | |
| ALRX | A and R Leasing Limited Liability Corporation | |
| ALS | Alton and Southern Railway Company | |
| ALSX | Albis Canada Incorporated | |
| ALTU | VTG Vereinigte Tanklage U Transportmittel GMBH | |
| ALTX | Southern Illinois Railcar Incorporated | |
| ALUX | Alumax of South Carolina Incorporated | |
| ALY | Allegheny and Eastern Railroad Incorporated | |
| AM | Arkansas and Missouri Railroad Company | |
| AMAX | AMAX Coal Company | |
| AMBU | Amber Line Incorporated | |
| AMBX | American Boiler Works Incorporated | |
| AMC | Arkansas Louisiana and Mississippi Railroad Company | |
| AMCX | BP Amoco Chemical Company Chemical Division | |
| AMCZ | Interbulk Incorporated | |
| AMEX | Allied Enterprises | |
| AMFU | Amphibious Container Leasing Limited | |
| AMGX | AMG Resources Corporation | |
| AMHR | Landisville Railroad Incorporated | |
| AMIU | American Marine Industry | |
| AMIX | Railcar Leasing Specialists Incorporated | |
| AMIZ | American Marine Industries | |
| AMLX | American Railcar Company | |
| AMMU | Hyundai | |
| AMMX | Kentucky-Tennessee Clay Company | |
| AMNX | American Railcar Leasing Partners | |
| AMOX | Amoco Oil Company | |
| AMOZ | American Oil Company | |
| AMPX | General Electric Rail Services Corporation | |
| AMRX | Consolidated Oil and Transportation Company Incorporated | |
| AMRZ | American Chassis Leasing Incorporated | |
| AMSX | AllTrans Management Services Corp | |
| AMTK | National Railroad Passenger Corporation | |
| AMTZ | Amtrak (National Railroad Passenger Corporation) | |
| AMXU | Americas Marine Express Incorporated | |
| AN | Apalachicola Northern Railroad | |
| ANAU | Alliance Navigation Line Incorporated | |
| ANAX | General Electric Rail Services Corporation | |
| ANCX | Norit Americas Incorporated | |
| ANDX | Andesite Rock Company | |
| ANKX | A and K Railroad Materials Incorporated | |
| ANR | Angelina and Neches River Railroad | |
| ANSX | Ansco Investment Company | |
| AOCU | Associated Octel | |
| AOCX | Aluminum Company of America | |
| AOIX | Marathon Ashland Petroleum Company | |
| AOK | Arkansas-Oklahoma Railroad Incorporated | |
| AOUX | Alberta and Orient Glycol Company Limited | |
| APA | Apache Railway Company | |
| APAX | Cimentos Apasco S.A. De C.V. | |
| APCU | American President Lines Limited | |
| APCX | Allied Lime Company | |
| APD | Albany Port District | |
| APEX | Apex Tank Car Line | |
| APHX | Air Products Polymers LP | |
| APIX | Commonwealth Plan Incorporated | |
| APLU | American President Lines Limited | |
| APLX | APL Land Transport Services Incorporated | |
| APLZ | American President Lines Limited | |
| APMU | Maersk Lines | |
| APMX | Air Products Manufacturing Company | |
| APNC | Appanoose County Community Railroad | |
| APOX | Albama Power Company | |
| APRX | Air Products and Chemicals Incorporated | |
| APSX | Arizona Public Service Company | |
| APTX | Air Products and Chemicals Incorporated | |
| APWX | Appalachian Power Company | |
| APXX | Alberta Prairie Rail Excursions | |
| AQCX | Aqua-Chem Incorporated Cleaver Brooks Division | |
| AR | Aberdeen and Rockfish Railroad Company | |
| ARA | Arcade and Attica Railroad Corporation | |
| ARC | Alexander Railroad Company | |
| ARCX | Arizona Rail Car Incorporated | |
| ARDP | Union Pacific Railroad Company | |
| ARDU | CATU Containers S.A. | |
| ARE | A. and R. Line Incorporated | |
| AREX | Aeropres Corporation | |
| ARGX | Associated Railcar Incorporated | |
| ARHU | CATU Containers S.A. | |
| ARHX | Arch Mineral Corporation | |
| ARIX | General Electric Rail Services Corporation | |
| ARMH | Union Pacific Railroad Company | |
| ARMN | Union Pacific Railroad Company | |
| ARMX | American Rail and Marine Corporation | |
| ARMZ | Armasal Line | |
| ARN | Alberta RailNet Incorporated | |
| AROX | General American Transportation Corporation | |
| ARPX | Amoco Oil Company | |
| ARR | Alaska Railroad Corporation | |
| ARRX | Anthracite Railroads Historical Society Incorporated | |
| ARSX | Aristech Chemical Corporation | |
| ART | American Refrigerator Transit Company | |
| ARTU | CATU Containers S.A. | |
| ARW | Arkansas Western Railway Company | |
| ARWX | Alabama River Woodlands Incorporated | |
| ARZC | Arizona and California Railroad Company | |
| ASAB | Bay Line Railroad LLC | |
| ASCX | Armco Steel Company L.P. | |
| ASGX | Ash Grove Cement Company | |
| ASHU | Maritainer France SA | |
| ASHX | American Soda LLP | |
| ASR | Allegheny Southern Railroad Incorporated | |
| ASRX | Domino Sugar Company | |
| ASRY | Ashland Railway Incorporated | |
| ASRZ | Agri/Share Cooperative | |
| ASTX | Asarco Incorporated | |
| ATCX | Southern Illinois Railcar Incorporated | |
| ATEX | Asplundh Tree Expert Co Railroad Division | |
| ATGU | Burlington Northern and Santa Fe Railway Company | |
| ATGX | ATEL Leasing Corporation | |
| ATIU | Societe Auxillaire De Transport Et D'Industries | |
| ATLT | Austin Todd and Ladd Railroad Company | |
| ATLU | American Marine Industries | |
| ATLX | Atlas Machine and Iron Works Incorporated | |
| ATLZ | American Marine Industries | |
| ATMX | U.S. Dept. of Energy Albuquerque Operations Office | |
| ATOU | Atochem | |
| ATSF | Burlington Northern and Santa Fe Railway Company (Atchison, Topeka & Santa Fe) | |
| ATTX | TTX Company | |
| ATW | Atlantic and Western Railway | |
| AUG | Augusta Railroad Corporation | |
| AVL | Aroostook Valley Railroad Company | |
| AVLU | Allied Van Lines | |
| AVR | Allegheny Valley Railroad Company | |
| AWCX | Airco Welding Products | |
| AWDX | Atlantic of New York Incorporated | |
| AWIX | Albright and Wilson Americas Incorporated | |
| AWP | CSX Transportation Incorporated (Atlanta & West Point) | |
| AWW | Algers Winslow and Western Railway | |
| AWXX | East Carbon development Company | |
| AWZZ | McCloud Railway Company | |
| AXCU | Ace Transportation Company | |
| AXXZ | Agricultural Express of America | |
| AZCR | Arizona Central Railroad Incorporated | |
| AZCX | Azcon Corporation | |
| AZER | Arizona Eastern Railway Company | |
| AZEX | Arizona Electric Power Cooperative Incorporated | |
| AZMX | Arizona Railway Museum | |
| BADX | Baden Investment Company | |
| BAEX | Andersons | |
| BANU | Bank Winter and Co Aktiengesellschaft | |
| BAPX | Bay Area Piggyback Incorporated | |
| BAR | Bangor and Aroostook Railroad Company | |
| BARU | Barons Leasing Corporation | |
| BARZ | Bangor and Aroostook Railroad Company | |
| BASX | Bay State Milling Company | |
| BAWX | Babcock and Wilcox Company | |
| BAYL | Bay Line Railroad LLC | |
| BAYU | Mobay Chemical Corporation | |
| BAYX | Bayer Corporation | |
| BB | Buckingham Branch Railroad Company | |
| BBCX | ABB Power Generation Incorporated | |
| BBRX | Bombardier Incorporated Transportation Equipment Group | |
| BBSZ | Barbar Steamship Lines Incorporated | |
| BBTU | Bress Bulk International Bulk Transport and Consulting | |
| BCAX | Blue Circle Incorporated | |
| BCCX | Border Chemical Company Limited | |
| BCDX | Borden Chemical Incorporated | |
| BCGX | Bay Cities Gas Corporation | |
| BCH | Southern Railway of British Columbia Limited | |
| BCIT | BC Rail Limited | |
| BCIU | Bay Cities Leasing Company | |
| BCIX | Blue Circle Incorporated | |
| BCJU | Bay Cities Leasing Company | |
| BCLR | Bay Colony Railroad Corporation | |
| BCLU | Bibby Bros Company | |
| BCMX | Bullet Concrete Materials Company | |
| BCNE | Canadian National Railway | |
| BCOL | BC Rail Limited | |
| BCRX | General Electric Rail Services Corporation | |
| BCRY | Cando Contracting Limited (Barrie-Collingwood Railway) | |
| BCTZ | Boise Cascade Corporation | |
| BCVX | West Coast Express | |
| BCWX | Union Tank Car Company | |
| BCYU | Bay Cities Leasing Company (Union Pacific) | |
| BDCX | Anchor Glass Container | |
| BDLX | BDL Company | |
| BDMX | Blue Diamond Mining Incorporated | |
| BDNX | Baroid Drilling Fluids Incorporated | |
| BDRV | Belvidere and Delaware River Railway | |
| BDTL | Ballard Terminal Railroad Company | |
| BDW | Bad Water Line | |
| BECX | FMC Corporation | |
| BEEM | Beech Mountain Railroad Corporation | |
| BELX | Belle Haven Foods Incorporated | |
| BENX | Investors Property Service | |
| BFCX | Berwick Freight Car Company | |
| BFGX | Oxy Vinyls LP | |
| BFHU | Bailee Freight Services Limited | |
| BFIX | Bethlehem Steel Corporations | |
| BFRR | Buffalo Ridge Railroad Incorporated | |
| BFSU | Bailee Freight Services Limited | |
| BGEX | GATX Capital Corporation | |
| BGKU | Schering AG | |
| BGSX | Strata Corporation | |
| BHCU | Bridgehead Container Service | |
| BHP | BHP Nevada Railroad Company | |
| BHTX | Bernhart Crane and Rigging Company | |
| BIAX | Ocala Recycling Recycling | |
| BIDU | Universal Bulk-Handling Limited | |
| BIGX | Air Liquide America Corporation | |
| BIRR | Bellingham International Railroad LLC | |
| BISX | Brandenburg Industrial Service Co | |
| BITY | Penn Eastern Rail Lines Incorporated | |
| BJGX | B. J. Gas Supply Incorporated | |
| BJHX | BJ Titan Services Company | |
| BJOX | Citicorp Railmark Incorporated | |
| BJRY | Burlington Junction Railway | |
| BKLU | Bank Line Limited | |
| BKRR | Batten Kill Railroad Company Incorporated | |
| BKRU | Baker Tanks | |
| BKTY | Union Pacific Railroad Company | |
| BLCX | Commonwealth Plan Incorporated | |
| BLE | Bessemer and Lake Erie Railroad Company | |
| BLKM | Black Mesa and Lake Powell | |
| BLKU | Bulkhaul Company Limited | |
| BLKZ | Mid-American Intermodal Equipment Corporation | |
| BLMR | Blue Mountain Railroad Incorporated | |
| BLOR | Bloomer Line | |
| BM | Guilford Rail system (Boston & Maine) | |
| BMAZ | Transamerica Leasing (Better Asset Management) | |
| BMCX | Bluewater Michigan Chapter Incorporated | |
| BMDZ | Minnesota Dakota and Western Railway Company | |
| BMH | Beaufort and Morehead Railroad Co | |
| BMIZ | Burlington Motor Carriers | |
| BML | Belfast and Moosehead Lake Railroad | |
| BMRG | Blue Mountain and Reading Railroad | |
| BMS | St. Lawrence and Atlantic Railroad Company | |
| BMSX | Bemis Company Incorporated | |
| BMZ | Boston and Maine Corp | |
| BN | Burlington Northern and Santa Fe Railway Company (Burlington Northern) | |
| BNAU | Burlington Northern and Santa Fe Railway Company | |
| BNAZ | Burlington Northern and Santa Fe Railway Company | |
| BNFE | Burlington Northern and Santa Fe Railway Company | |
| BNIU | British and Irish Steam Packet Company | |
| BNML | Burlington Northern (Manitoba) Limited | |
| BNO | Burlington Northern and Santa Fe Railway Company | |
| BNPZ | Pacific Rail Services | |
| BNQ | Burlington Northern and Santa Fe Railway Company | |
| BNRQ | Burlington Northern and Santa Fe Railway Company | |
| BNRZ | Burlington Northern and Santa Fe Railway Company | |
| BNSF | Burlington Northern and Santa Fe Railway Company | |
| BNXU | Burlington Northern and Santa Fe Railway Company | |
| BNZ | Burlington Northern and Santa Fe Railway Company | |
| BO | CSX Transportation Incorporated (Baltimore & Ohio) | |
| BOBX | Freeman Gas of N.C. Incorporated | |
| BOCT | CSX Transportation (Baltimore & Ohio Chicago Terminal Railroad) | |
| BOCX | BOC Gases | |
| BOGU | BSL Transport | |
| BONU | Bond International Limited | |
| BOP | Border Pacific Railroad Company | |
| BORX | U.S. Borax Incorporated | |
| BORZ | Ecorail Incorporated | |
| BOSU | W. BOS Vloeistof Transport B.V. | |
| BOZ | CSX Transportation Incorporated (Baltimore & Ohio) | |
| BPAX | US Dept of Energy Bonneville Power Administration | |
| BPAZ | Acme Markets Incorporated | |
| BPCU | B P Chemicals Belgium | |
| BPCX | Basin Electric Power Cooperative | |
| BPIX | Nova Chemicals Incorporated | |
| BPLU | M1 Engineering Limited | |
| BPLX | Nova Chemicals Incorporated | |
| BPOX | BP Amoco Chemical Comp. BP Oil Division | |
| BPPX | GATX Capital Corporation | |
| BPRR | Buffalo and Pittsburgh Railroad Incorporated | |
| BR | Bradford Industrial Rail Incorporated | |
| BRAX | CIT Group/Capital Finance Incorporated | |
| BRBX | Bombardier Transportation | |
| BRC | Belt Railway Company of Chicago | |
| BRCX | Bunge Corporation | |
| BREX | Big Rivers Electric Corporation (Ky.) | |
| BRFD | Branford Steam Railroad | |
| BRG | Brownsville and Rio Grande International Railroad | |
| BRIX | Incobrasa Industries Limited | |
| BRNU | Brun S.A. | |
| BRNZ | Comtrak Incorporated | |
| BROU | Swedish Transocean Lines | |
| BRRC | Borinstein Railroad Company | |
| BRRX | Brooklyn Resource Recovery Incorporated | |
| BRW | Black River and Western Corporation | |
| BS | Birmingham Southern Railroad Company | |
| BSCX | Bethlehem Steel Corporation | |
| BSDA | BSDA Railroad | |
| BSIX | Bethlehem Steel Corporation | |
| BSLU | Blue Star Line Limited | |
| BSMX | Bay State Milling Company | |
| BSOR | Buffalo Southern Railroad Incorporated | |
| BSPX | Otter Tail Power Company (S.Dak.) | |
| BSRX | Branson Scenic Railway Incorporated | |
| BSTX | Trinitas Corporation | |
| BTAX | Air Liquide America Corporation. | |
| BTC | Birmingham Terminal | |
| BTCO | Boston Terminal Company | |
| BTCU | Bulkmatic Transport Co | |
| BTCZ | Bulkmatic Transport Company | |
| BTEX | BTE Equipment LLC | |
| BTLZ | Intermodal Services Incorporated | |
| BTRX | Rocky Mountain Transportation Services | |
| BTTX | TTX Company | |
| BUDX | Budd Company (temporary) | |
| BUDZ | Bud Antle Incorporated | |
| BUGX | Bruggere and Monson | |
| BUKX | Louisville Gas and Electric Company | |
| BUNZ | Burnside International Trucks Limited | |
| BVCX | West Coast Express | |
| BVHX | B.V. Heddrick Gravel and Sand Company | |
| BVRY | Brandywine Valley Railroad Company | |
| BWCX | GE Plastics | |
| BXBX | BXB Corporation | |
| BXN | Bauxite and Northern Railway Company | |
| CA | Chesapeake and Albemarle Railroad | |
| CAAX | MHC Incorporated Subsidiary of ConAgra Incorporated | |
| CABU | Bacardi and Company Limited | |
| CABX | Cabot Corporation | |
| CACZ | Comacasa Line | |
| CADX | CAN DO Incorporated | |
| CAFU | Bay Cities Leasing Company | |
| CAGX | MHC Incorporated Subsidiary of ConAgra Incorporated | |
| CAGY | Columbus and Greenville Railway Company | |
| CAGZ | Columbus and Greenville Railway Company | |
| CALA | Carolina Southern Railroad Company | |
| CALX | California Railcar Corporation | |
| CANX | CANAC International Incorporated | |
| CAOX | Westlake CA and O | |
| CAPX | TransAlta Utilities Corporation | |
| CARR | Carrollton Railroad | |
| CARX | Lamson and Sessions | |
| CARZ | Anton Caraton and Son | |
| CASO | Canadian Pacific Railway (Canada Southern) | |
| CATU | CATU Containers S.A. | |
| CAXU | Container Applications International Incorporated | |
| CBC | Chemins de fer Baie des Chaleurs Incorporated | |
| CBCX | Morton International | |
| CBGR | Council Bluffs Railway Company/Great Western Railway of Iowa LLC | |
| CBHU | China Ocean Shipping Company | |
| CBIU | Combi Line-Lash | |
| CBIX | Central Bi-Products | |
| CBL | Conemaugh and Black Lick Railroad | |
| CBLU | Cooper Brothers Containers Limited | |
| CBNS | Cape Breton and Central Nova Scotia Railway | |
| CBPU | CBSL Transportation Services Limited | |
| CBQ | Burlington Northern and Santa Fe Railway Company (Chicago, Burlington & Quincy) | |
| CBQZ | Burlington Northern and Santa Fe Railway Company | |
| CBRM | Chillicothe-Brunswick Rail Maintenance Authority | |
| CBRW | Columbia Basin Railroad Company | |
| CBRY | Copper Basin Railway Incorporated | |
| CBYN | Crosbyton Railway Company Incorporated | |
| CC | Canadian National (Chicago Central and Pacific Railroad) | |
| CCAX | FDJ Leasing | |
| CCBX | Union Carbide Corporation | |
| CCCL | Connecticut Central Railroad Company | |
| CCCU | Compass Container Co Incorporated | |
| CCCZ | Compass Container Co Incorporated | |
| CCDX | Dayton Power and Light Company | |
| CCEZ | Chicago Central and Pacific Railroad Company | |
| CCFZ | Chi-Can Freight Forwarding | |
| CCGX | Cando Contracting Limited | |
| CCHX | Columbian Chemicals Canada Limited | |
| CCIM | Corpus Christie Terminal | |
| CCIZ | Crete Intermodal | |
| CCKX | CCKX Incorporated | |
| CCKY | Chattooga and Chickamauga Railway Company | |
| CCLU | Char Ching Shipping (USA) Limited | |
| CCLX | Crystal Car Line Incorporated | |
| CCPX | Canadian Chemical Producers' Assoc. | |
| CCR | Kansas City Southern Railway Company (Corinth & Counce) | |
| CCRA | Camp Chase Industrial Railroad Corporation | |
| CCRR | Claremont Concord Railroad Corporation | |
| CCRU | Compagnie Des Containers Reservoir | |
| CCRX | Coastal Refining and Marketing Incorporated | |
| CCRY | Charles City Rail Lines Incorporated | |
| CCRZ | Kansas City Southern Railway Company | |
| CCSU | Trans Ocean Limited | |
| CCT | Central California Traction Company | |
| CCTU | Coordinated Caribbean Transport Incorporated | |
| CCTX | Central Power and Light Company (Texas) | |
| CCTZ | Crowley Maritime Corporation | |
| CCUO | Chicago-Chemung Railroad Corporation | |
| CCWX | Coastal Chem Incorporated | |
| CCX | Columbian Chemicals Co (Subsidiary of Phelps Dodge Corporation) | |
| CCXU | Char Ching Shipping (USA) Limited | |
| CCXX | Costain Coal Incorporated | |
| CDAC | Canadian American Railroad Company | |
| CDAU | Canadian Tire Corporation Limited | |
| CDAZ | Canadian Tire Corporation Limited | |
| CDCX | Air Liquide America Corporation | |
| CDGX | Service Oil Company | |
| CDLZ | Cardinal Freight Carriers | |
| CDNU | Carotrans International | |
| CDTX | California Department of Transportation | |
| CEBX | Combustion Engineering Incorporated | |
| CEDR | Cedar River Railroad Company | |
| CEFX | CIT Group/Capital Finance Incorporated | |
| CEI | Union Pacific Railroad Company (Chicago & Eastern Illinois) | |
| CEIW | Central Indiana and Western RR Company | |
| CELX | Celtran Incorporated Subsidiary of Hoechst Celanese Corporation | |
| CEMR | Central Manitoba Railway Incorporated | |
| CEMX | Cemex Mexico SA de CV | |
| CENX | Western Aggregates Incorporated | |
| CEPX | Trinity Industries Leasing | |
| CERA | Central Railroad Company of Indianapolis | |
| CERX | ER Carpenter LLP | |
| CETU | Custom Environmental Transport Incorporated | |
| CEWX | Canadian Enterprise Gas Products | |
| CF | Cape Fear Railways Incorporated | |
| CFKZ | XTRA Intermodal | |
| CFLX | Crestbrook Forest Industries (captive service) | |
| CFMX | Cargill Incorporated | |
| CFNR | California Northern Railroad Company | |
| CFRU | Cardinal Freight Carriers | |
| CFSX | C and T Refinery Incorporated | |
| CFTX | Canadian Fertilizers Limited | |
| CFWR | Caney Fork and Western Railroad | |
| CG | Norfolk Southern Railway Company (Central of Georgia) | |
| CGAX | Cargill Incorporated C.G.D. Division | |
| CGBX | Dow Chemical Canada Incorporated | |
| CGCX | Cargill Incorporated C.G.D. Division | |
| CGDX | Country Gas Distributors Incorporated | |
| CGEX | Cargill Incorporated C.G.D. Division | |
| CGFX | Consolidated Gas Company of Florida | |
| CGLX | CGTX Incorporated | |
| CGMU | Compagnie Generale Maritime (French Line) | |
| CGMX | CGTX Incorporated | |
| CGMZ | Compagnie Generale Maritime (French Line) | |
| CGNE | Champagne Railroad Incorporated | |
| CGOX | Cargill Incorporated | |
| CGRX | Consolidated Grain and Barge Company | |
| CGSX | Proflame Incorporated | |
| CGT | Canada and Gulf Terminal Railway | |
| CGTU | Compagnie Generale Maritime (French Line) | |
| CGTX | CGTX Incorporated | |
| CGW | Union Pacific Railroad Company (Chicago Great Western) | |
| CHAU | Combined Transport Group Incorporated | |
| CHAX | Chartrand's Tank Car Service | |
| CHEX | Equistar Chemicals | |
| CHFU | Challenge International | |
| CHIU | Chimco - Bulgaria | |
| CHLX | Chemleco Incorporated | |
| CHMX | Southern Illinois Railcar Incorporated | |
| CHP | Ferrocarriles Nacionales de Mexico | |
| CHR | Chestnut Ridge Railway Company | |
| CHRC | Chaparral Railroad Company Incorporated | |
| CHRR | Chesapeake Railroad Company | |
| CHRX | The Chesapeake Division | |
| CHSX | Cenex Harvest States Cooperative | |
| CHSZ | Intermodal Services Incorporated | |
| CHTS | Penn Eastern Rail Lines Incorporated | |
| CHTT | Union Pacific Railroad Company (Chicago Heights Terminal Transfer) | |
| CHVX | Chevron Chemical Company | |
| CHW | Norfolk Southern Railway Company | |
| CI | Cambria and Indiana Railroad Company | |
| CIC | Cedar Rapids and Iowa City Railway | |
| CIIX | Contico International Incorporated | |
| CIND | Central Railroad Company of Indiana | |
| CIPX | Ameren Energy Generating Company | |
| CIR | City of Rochelle Illinois | |
| CIRR | Chattahoochee Industrial Railroad | |
| CIRX | Consbec Incorporated | |
| CISD | Colonel's Island Railroad Company | |
| CITU | Citroen | |
| CITX | PLM International Incorporated | |
| CIW | Illinois Central Railroad Company (Chicago & Illinois Western) | |
| CIXX | Calciner Industries Incorporated | |
| CJPX | General Electric Rail Services Corporation | |
| CKIX | C.K. Industries | |
| CKP | Colorado Kansas and Pacific Railway Company | |
| CKRY | Central Kansas Railway Incorporated | |
| CKSI | Carthage Knightstown and Shirley Railroad | |
| CLC | Columbia and Cowlitz Railway Company | |
| CLCZ | Complete Logistics Company | |
| CLDZ | Celadon Trucking Services Incorporated | |
| CLEX | Cieco Corporation | |
| CLGU | Costa Line Cargo Services | |
| CLIX | Calumet Lubricants | |
| CLMX | Cyprus Sierrita Corporation | |
| CLNA | Carolina Coastal Railway Incorporated | |
| CLOU | CLOU Container Leasing GmbH | |
| CLOX | Clark Refining and Marketing Incorporated | |
| CLP | Clarendon and Pittsford Railroad | |
| CLPX | Boulder Scientific Company | |
| CLPZ | Clarendon and Pittsford Railroad Company | |
| CLRX | Clayton Rail | |
| CLSL | Columbia and Silver Creek Railroad | |
| CLSX | Cargill Incorporated Salt Division | |
| CLTU | Chemical Leaman Tank Lines Incorporated | |
| CLTX | Cloro de Tehuantepec S.A. de C.V. | |
| CM | Central Montana Rail Incorporated | |
| CMBU | CMB SA | |
| CMC | CMC Railroad Incorporated | |
| CMCU | Crowley Maritime Corporation | |
| CMCX | Sweetman Construction Company | |
| CMCZ | Crowley Maritime Corporation | |
| CMDX | Cargill Incorporated | |
| CMGN | Central Michigan Railway Company | |
| CMHX | CarMath Incorporated | |
| CMIX | Consolidated Minerals Incorporated | |
| CMLU | Containers Marine Lines (Division of American Export) | |
| CMLZ | Containers Marine Lines Isbrandtsen | |
| CMMU | Medcontainers | |
| CMO | Union Pacific Railroad Company | |
| CMPA | Madison Railroad Division of City of Madison Port Authority | |
| CMPU | Complete Logistics Company | |
| CMSN | Crowley Marine Services | |
| CMU | Columbus Charter Service | |
| CMUU | Canada Maritime Agencies Limited | |
| CN | Canadian National Railway | |
| CNA | Canadian National Railway | |
| CNAZ | Grand Trunk Western Railroad Incorporated | |
| CNDX | Connecticut Department of Transportation | |
| CNEU | Canadian National Railway | |
| CNEZ | Canadian National Railway | |
| CNGU | Sicng (Ind. Chim. Du Nord de la Grece S.A.) | |
| CNGX | CONAG Finance Incorporated-CNG Transmission Corporation | |
| CNHX | Ontario Hydro | |
| CNIS | Canadian National Railway | |
| CNLX | CANAC International Incorporated | |
| CNMZ | Consolidated Rail Corporation | |
| CNNU | Compania Nacional de Nabegacao (US African Line) | |
| CNOR | Cincinnati Northern | |
| CNOW | Columbia and Northern Railway Company | |
| CNPU | Canadian National Railway | |
| CNPZ | Canadian National Railway | |
| CNQ | Canadian National Railway | |
| CNRR | California Northern Railroad | |
| CNRU | Canadian National Railway | |
| CNRZ | Canadian National Railway | |
| CNSX | Consolidated Oil and Transportation Company Incorporated | |
| CNTP | Norfolk Southern (Cincinnati New Orleans and Texas Pacific Railway Company) | |
| CNTX | Continental Tank Car Corporation | |
| CNUR | C and NC Railroad Corporation | |
| CNVX | Convoyeur National Incorporated | |
| CNW | Union Pacific Railroad Company (Chicago & North Western) | |
| CNWX | Canadian Wheat Board | |
| CNWZ | Union Pacific Railroad Company (Chicago & North Western) | |
| CNYK | Central New York Locomotive Company | |
| CNZR | Central New England Railroad Company | |
| CO | CSX Transportation Incorporated (Chesapeake & Ohio) | |
| COAX | Trinity Rail Management Incorporated. | |
| COBX | Cobre Mining Company Limited | |
| COCX | Chevron Oronite Company LLC | |
| COER | Crab Orchard and Egyptian Railroad | |
| COEZ | Crab Orchard and Egyptian Railroad | |
| COLX | Alliant Energy | |
| COMX | Commonwealth Edison Company | |
| CONU | Contrans | |
| CONX | Conoco Incorporated | |
| COOK | Cook Transit | |
| COOX | First Union Rail | |
| COP | City of Prineville Railway | |
| COPX | CanadianOxy Industrial Chemicals Limited Partnership | |
| CORP | Central Oregon and Pacific Railroad Incorporated | |
| CORU | CATU Containers S.A. | |
| CORX | Coors Brewing Company | |
| COSU | China Ocean Steamship Limited | |
| COSX | Cabot Corporation CAB-O-SIL Division | |
| COTX | GLNX Corp | |
| COZ | CSX Transportation Incorporated (Chesapeake & Ohio) | |
| CP | Canadian Pacific Railway | |
| CPAA | Canadian Pacific Railway | |
| CPAX | CITGO Petroleum Corporation | |
| CPBU | SOO Line Railroad | |
| CPBZ | SOO Line Railroad | |
| CPCX | CPS Chemical Company | |
| CPDR | Carolina Piedmont Division South Carolina Central Railroad Company | |
| CPDU | Canadian Pacific (Delaware and Hudson Railway Company Incorporated) | |
| CPDX | Chevron USA Incorporated | |
| CPDZ | Canadian Pacific (Delaware and Hudson Railway Company Incorporated) | |
| CPGZ | ContainerPort Group Incorporated | |
| CPHX | Ontario Hydro | |
| CPI | Canadian Pacific Railway | |
| CPIX | ICI Acrylics Incorporated | |
| CPLX | CPLX Leasing Limited | |
| CPOX | Consumers Power Company (Mich.) | |
| CPPU | Canadian Pacific Railway | |
| CPPX | Consolidated Papers Incorporated | |
| CPPZ | Canadian Pacific Railway | |
| CPRS | Canadian Pacific Railway | |
| CPRX | Carolina Power and Light Company | |
| CPRZ | Canadian Pacific Railway | |
| CPT | Canadian Pacific Railway | |
| CPVU | Containers And Pressure Vessels ltd | |
| CPWX | Canadian Wheat Board | |
| CQPA | Central Columbiana and Pennsylvania Railway Incorporated | |
| CR | Norfolk Southern Railway Company (Conrail) | |
| CRAZ | Cornucopia Transportation Incorporated | |
| CRCU | Norfolk Southern Railway Company | |
| CRCX | Consolidated Rail Corporation | |
| CRCZ | Norfolk Southern Railway Company | |
| CRDX | Chicago Freight Car Leasing Company | |
| CRE | Consolidated Rail Corporation (Eastern District) | |
| CREU | Canadian Retail Shippers Association | |
| CREX | Citicorp Railmark Incorporated | |
| CREZ | Canadian Retail Shippers Association | |
| CRGX | Cargill Incorporated | |
| CRIJ | Carolina Rail Services Incorporated | |
| CRIX | Citicorp Railmark Incorporated | |
| CRL | Chicago Rail Link | |
| CRLE | Coe Rail Incorporated | |
| CRLU | Carlisle Leasing International | |
| CRLX | Canadian Railserve Limited | |
| CRMU | Norfolk Southern Railway Company | |
| CRMX | MHC Incorporated (Subsidiary of Conagra Incorporated) | |
| CRMZ | Norfolk Southern Railway Company | |
| CRN | Norfolk Southern Railway Company | |
| CRPU | Norfolk Southern Railway Company | |
| CRPX | Centennial Gas Liquide LLC | |
| CRQU | Norfolk Southern Railway Company | |
| CRR | CSX Transportation Incorporated (Clinchfield Railroad) | |
| CRRX | Canon City and Royal Gorge Railroad LLC | |
| CRSX | Cost Rail Service | |
| CRTZ | Norfolk Southern Railway Company | |
| CRXU | Cronos Containers (U.K.) | |
| CRYX | Cryo-Trans Incorporated | |
| CRZ | Norfolk Southern Railway Company | |
| CS | Burlington Northern and Santa Fe Railway Company (Colorado & Southern) | |
| CSAU | Costa Line | |
| CSBX | Cargill Incorporated Salt Division | |
| CSCD | Cascade and Columbia River Railroad Company | |
| CSCX | Coal Supply Corporation | |
| CSDX | Metropolitan Water Reclamation District of Greater Chicago | |
| CSKR | C and S Railroad Corporation | |
| CSKU | Consolidated Services Incorporated | |
| CSL | Chicago Short Line Railway Company | |
| CSMX | Carol and Andy Muller | |
| CSNX | Trident NGL Incorporated | |
| CSO | Connecticut Southern Railroad | |
| CSOX | CITGO Petroleum Corporation | |
| CSP | Camas Prairie RailNet Incorporated | |
| CSPX | Chesapeake Speciality Products | |
| CSRX | Conway Scenic Railroad | |
| CSRZ | CSX Transportation Incorporated | |
| CSS | Chicago SouthShore and South Bend Railroad | |
| CSTX | Canada Starch Company Incorporated | |
| CSUX | City of Colorado Springs Department of Electric Generation | |
| CSVU | Compania Sud Americana de Vapores GmbH | |
| CSWX | Central and South West Services Incorporated | |
| CSXE | CSX Transportation Incorporated | |
| CSXT | CSX Transportation Incorporated | |
| CSXU | CSX Transportation Incorporated | |
| CSXZ | CSX Transportation Incorporated | |
| CSYX | Central Soya Company Incorporated | |
| CT | City of Columbia d/b/a Columbia Terminal | |
| CTCU | Container Trading Company | |
| CTCX | Endasa S.A. De C.V. | |
| CTE | Cen-Tex Rail Link Limited | |
| CTEU | Spanish Lines | |
| CTEX | PLM International Incorporated | |
| CTGZ | Combined Transport Group Incorporated | |
| CTIE | Kansas City Southern Railway Company | |
| CTIU | CTI-Container Transport International Incorporated | |
| CTIZ | CTI-Container Transport International Incorporated | |
| CTKU | Container Tank Services Limited | |
| CTLX | Endasa S.A. De C.V. | |
| CTML | Cairo Terminal Railroad Company | |
| CTN | Canton Railroad Company | |
| CTNX | General Electric Rail Services Corporation | |
| CTPX | Courtesy Corporation | |
| CTR | Clinton Terminal Railroad Company | |
| CTRN | Central of Tennessee Railway and Navigation Company | |
| CTRU | Container Trading Company | |
| CTRW | Carlton Trail Railway Company | |
| CTRX | C and T Refinery Incorporated | |
| CTSU | Bibby Bros Company | |
| CTSX | Chem Comp Systems d/b/a CTS Cement Manufacturing Incorporated | |
| CTSZ | Carotrans International | |
| CTTX | TTX Company | |
| CTUU | Container Trading Company | |
| CTVX | Cleveland Terminal and Valley Railway Incorporated | |
| CTWU | Container Trading Company | |
| CTZZ | Continental Transportation Company | |
| CUEX | Colorado-Utility Electric Assoc. | |
| CUOH | Columbus and Ohio River Railroad Company | |
| CUST | Chicago Union Station Company | |
| CUVA | Cuyahoga Valley Railway Company | |
| CV | Grand Trunk Western Railroad Incorporated (Central Vermont) | |
| CVC | Canadian National Railway (Central Vermont) | |
| CVQ | Grand Trunk Western Railroad Incorporated | |
| CVR | Cimarron Valley Railroad L.C. | |
| CVRX | Caddo Valley Railroad Company | |
| CVRX | Locomotive and Tower Preservation Fund Limited | |
| CVRY | Caddo Valley Railroad Company | |
| CVRZ | Grand Trunk Western Railroad Incorporated | |
| CW | Colorado and Wyoming Railway Company | |
| CWBX | C. W. Brooks Incorporated | |
| CWCX | Canandaigua Wine Company Incorporated | |
| CWCY | Caldwell County Railroad Company | |
| CWEX | Midwest Generation LLC (Ill.) | |
| CWIU | Con-Way Intermodal | |
| CWIZ | Con-Way Intermodal | |
| CWMX | Chemical Waste Management Incorporated | |
| CWP | Chicago Rail Link | |
| CWR | CWR Incorporated | |
| CWRL | RailAmerica Central Western Railway Corporation | |
| CWRY | Commonwealth Railway Incorporated | |
| CWRZ | Providence and Worcester Railroad Company | |
| CWTX | ChemWest Industries Incorporated | |
| CWTZ | Con-Way Truckload Services | |
| CXPZ | CSX Transportation Incorporated | |
| CXRZ | CSX Transportation Incorporated | |
| CXVZ | CSX Intermodal Incorporated | |
| CYCY | Crystal City Railroad Incorporated | |
| CYDX | Conrad Yelvington Distributors Incorporated | |
| CYTX | Construcciones Y Trituaraciones S.A. De C.V. | |
| CZCX | Crown Zellerbach Corporation | |
| DA | Canadian Pacific Railway (Dominion Atlantic) | |
| DACX | VIP Tank Services | |
| DAFU | Dafra Lines SA | |
| DAFX | Department of Defence Troop Support and Aviation Material Readines | |
| DAFZ | Dafra Lines SA | |
| DAIR | D and I Railroad Company | |
| DAKR | Dakota Rail Incorporated | |
| DALZ | D and A Leasing Incorporated | |
| DAPX | Dairyland Power Cooperative (Wis.) | |
| DARU | Dart Containerline Incorporated | |
| DARZ | Dart Intermodal Incorporated | |
| DATU | Dart Containerline Incorporated | |
| DATX | DATX Associates | |
| DAVX | W. R. Grace and Company - Conn. Davison Chemical Division | |
| DAWX | D.A. Walmsley and Company | |
| DAX | Occidental Chemical Corporation | |
| DBCX | BASF Corporation | |
| DBSU | Donbar Steamship Company Incorporated | |
| DBUX | CIT Group/Capital Finance Incorporated | |
| DC | Delray Connecting Railroad Company | |
| DCAX | Tarmac Fla. Incorporated | |
| DCBX | Degussa Corporation | |
| DCCU | Dow Corning Corporation | |
| DCCX | McDonnell Douglas Corporation | |
| DCFB | Dodge City Ford and Bucklin Railroad Company Incorporated | |
| DCFX | PLM International Incorporated | |
| DCIU | Dana Container Incorporated | |
| DCIX | Danella Construction Corporation | |
| DCLU | Dutch Container Leasing B.V. | |
| DCLX | Dow Chemical Canada Incorporated | |
| DCOU | Dow Corning Corporation | |
| DCPX | Dart Container Corporation of Pennsylvania | |
| DCRR | Dubois County Railroad | |
| DCSU | Delta Conteneur Service | |
| DCTX | PLM International Incorporated | |
| DDDX | Frontier Cooperative Company | |
| DDEX | Dupont Dow Elastomers LLC | |
| DDNX | Didion Incorporated | |
| DEEX | Detroit Edison Company | |
| DEGX | Mississippi Power Company | |
| DEMX | Demeter Incorporated | |
| DETX | Detroit Edison Company | |
| DFTX | DTE Transportation Services Limited | |
| DGBY | Digby Trucklines | |
| DGCX | Dakota Gasification Company | |
| DGHX | North American Chemical | |
| DGNO | Dallas Garland and Northeastern Railroad Incorporated | |
| DH | Canadian Pacific (Delaware and Hudson Railway Company Incorporated) | |
| DHNY | Canadian Pacific (Delaware and Hudson Railway Company Incorporated) | |
| DHPX | Dugassa Corporation | |
| DHRU | Den Hartogh NV | |
| DIIU | Dart Intermodal Incorporated | |
| DJBX | Donald J. Bertel d/b/a Gandy Dancer Incorporated | |
| DJJX | Joseph Transportation Incorporated | |
| DJLX | Joseph Leasing Limited | |
| DJMX | Daniel John Marnell | |
| DJPX | Joseph Transportation Incorporated | |
| DJRX | Joseph Transportation Incorporated | |
| DJTX | Joseph Transportation Incorporated | |
| DKPX | Duke Power Company (Scale Test Cars) | |
| DKS | Union Pacific Railroad Company | |
| DKUX | Exxon Company U.S.A. | |
| DL | Delaware-Lackawanna Railroad Company | |
| DLC | Drummond Lighterage | |
| DLFX | Diversified Lease Funding Incorporated | |
| DLKU | Deltank Limited | |
| DLMX | Daylight Locomotives and Machine Works Incorporated | |
| DLPX | Degussa Canada Limited | |
| DLRX | General Electric Rail Services Corporation | |
| DLSX | Diesel Supply Company Incorporated | |
| DLTX | Dale L. Thornborough | |
| DLVX | Thiokol Corporation | |
| DLWR | Depew Lancaster and Western Railroad Company Incorporated | |
| DLWX | D.L. and W. Incorporated | |
| DM | Lake State Railway Company | |
| DME | Dakota Minnesota and Eastern Railroad Corporation | |
| DMHX | Davenport Mammoet LLC | |
| DMIR | Duluth Missabe and Iron Range Railway Company | |
| DMIX | Minnesota Corn Processors Bulk Products Division | |
| DMLX | General Electric Rail Services Corporation | |
| DMLZ | DML Containers | |
| DMM | Dansville and Mount Morris Railroad Company | |
| DMVW | Dakota Missouri Valley and Western Railroad Incorporated | |
| DNAX | Dana Railcare | |
| DNE | Duluth and Northeastern Railroad Company | |
| DOCX | Du Pont Canada Incorporated | |
| DODU | Department of Defence (U.S.) | |
| DODX | Department of Defence Military Traffic Management Command | |
| DODZ | Department of Defence (U.S.) 20' chassis | |
| DOLX | Dolese Bros. Company | |
| DOTX | USDOT/Federal Railroad Administration | |
| DOWU | Dow Chemical Company | |
| DOWX | Dow Chemical Company | |
| DPDZ | Delaware and Hudson Railway Company Incorporated | |
| DPGX | Tractech Systems | |
| DPIX | Dufour Petroleum Incorporated | |
| DQE | De Queen and Eastern Railroad Incorporated | |
| DR | Dardanelle and Russellville Railroad Incorporated | |
| DRGW | Union Pacific Railroad Company (Denver & Rio Grande Western) | |
| DRGX | Denver and Royal Gorge Railway LLC | |
| DRHY | Durham Transport Incorporated | |
| DRI | Davenport Rock Island and North Western RR Company | |
| DRIR | Denver Rock Island Railroad | |
| DRMX | Danbury Railway Museum Incorporated | |
| DRSX | D.O.T. Rail Services Incorporated | |
| DRTU | Dart Intermodal Incorporated | |
| DRTZ | Dart Intermodal Incorporated | |
| DSA | Soo Line Railroad (Duluth, South Shore & Atlantic) | |
| DSBU | Ameribrom Incorporated | |
| DSCX | DIFCO Incorporated | |
| DSIX | Dowell Schlumberger Incorporated | |
| DSLX | DeGussa Corporation | |
| DSLZ | Intermodal Services Incorporated | |
| DSRC | Dakota Southern Railway Company | |
| DSRR | Delta Southern Railroad Company | |
| DT | Decatur Junction Railway Company | |
| DTCX | DTE Transportation Services Incorporated | |
| DTEX | Dresser Transportation Equipment Division Dresser Industries (Test Cars) | |
| DTI | Grand Trunk Western Railroad Incorporated (Detroit, Toledo & Ironton) | |
| DTIZ | Grand Trunk Western Railroad Incorporated | |
| DTLX | Delta Tank Line Company | |
| DTRR | Housatonic Rail Road Company (Danbury Terminal) | |
| DTS | Grand Trunk Western Railroad Incorporated (Detroit & Toledo South Shore) | |
| DTTX | TTX Company | |
| DTZZ | Direct Transit Incorporated | |
| DUCX | Du Pont Canada Incorporated | |
| DUKX | Dupps Company | |
| DUPX | Du Pont De Nemours and Company Incorporated | |
| DUT | Denver Union Terminal Railway Company | |
| DUTC | Dallas Union Terminal | |
| DV | Delaware Valley Railway Company | |
| DVLX | Freeport-McRo-Ran Sulphur Company | |
| DVR | Devco Railway Cape Breton Development Corporation (Coal Division) | |
| DVRU | Dover Limited | |
| DVS | Delta Valley and Southern Railway Company | |
| DVSZ | Delta Valley and Southern Railway Company | |
| DWAU | Degussa Antwerpen NV | |
| DWC | Canadian National Railway (Duluth, Winnipeg & Pacific) | |
| DWCX | David Witherspoon Incorporated | |
| DWP | Duluth Winnipeg and Pacific Railway | |
| DYLX | Transportation Equipment Incorporated | |
| DYNX | Dyno Nobel Incorporated | |
| EACH | East Camden and Highland RR Company | |
| EACU | East Asiatic Company Limited | |
| EAGX | Eaglebrook Incorporated | |
| EARY | Eastern Alabama Railway | |
| EASO | EASX Corporation d/b/a EASX Railroad Corporation | |
| EASU | Waterfront Container Leasing Company Incorporated | |
| EASZ | Waterfront Container Leasing Company Incorporated | |
| EBAX | Albemarle Corporation | |
| EBPX | Empire Builder Private Cars | |
| ECBR | East Cooper and Berkeley Railroad Company | |
| ECCX | Ethyl Canada Incorporated | |
| ECDX | Ethyl Petroleum Additives Incorporated | |
| ECGX | Alabama Power Company | |
| ECIX | Erman Corporation | |
| ECLX | ELM-Central Rail Leasing | |
| ECO | Ecorail Incorporated | |
| ECOX | Eco East | |
| ECOZ | Ecorail Incorporated | |
| ECPX | E.C.C. America Incorporated | |
| ECQX | Engineered Carbons Incorporated | |
| ECRX | Econo-Rail Corporation | |
| ECRZ | Norfolk Southern Railway Company | |
| ECUX | Exxon Chemical Americas | |
| ECXX | ECDC Environmental L.C. | |
| EDCX | El Dorado Chemical Company | |
| EDEX | Empire District Electric Company | |
| EDGX | Alliant Energy | |
| EDIU | EDI Incorporated | |
| EDIZ | EDI Incorporated | |
| EDW | El Dorado and Wesson Railway Company | |
| EDZX | Envases de Zacatecas S.A. de C.V. | |
| EE | Ellis and Eastern Company | |
| EEC | East Erie Commercial Railroad | |
| EEIX | Electric Energy Incorporated | |
| EELX | General Electric Rail Services Corporation | |
| EERX | Ebenezar Railcar Services Incorporated | |
| EFRR | Effingham Railroad Company | |
| EGSX | Entegy Gulf States Incorporated | |
| EHSX | Essex Hybrid Seed Company Incorporated | |
| EICX | Edlow International Company | |
| EIDU | Ethyl S A | |
| EIRC | Eastern Illinois Railroad Company | |
| EIRR | Eastern Idaho Railroad Incorporated | |
| EISU | Evergreen International (USA) | |
| EJE | Elgin Joliet and Eastern Railway Company | |
| EJR | East Jersey Railroad and Terminal | |
| EKBU | Keiserling (UK) Limited | |
| EKLU | K Line | |
| EL | Norfolk Southern Railway Company (Erie Lackawanna) | |
| ELCX | Eli Lilly and Company | |
| ELFX | Electric Fuels Corporation (Fla.) | |
| ELKR | Elk River Railroad Incorporated | |
| ELKX | Elkem Metals Company | |
| ELOX | ELCON Incorporated | |
| ELS | Escanaba and Lake Superior Railroad Company | |
| ELSX | Kentucky May Coal Company Incorporated | |
| ELTX | Soltex Polymers Incorporated | |
| EM | Edgemoor and Manetta Railway | |
| EMAX | EMAS | |
| EMCU | Evergreen Marine Corporation | |
| EMCZ | Evergreen International (USA) Corporation | |
| EMEU | East Med Tanks Limited | |
| EMHR | East Mahanoy and Hazelton Railroad Company | |
| EMHU | EMP | |
| EMIX | Environmental Management Incorporated | |
| EMMU | Eastern Mediterranean Cont. Company Limited | |
| EMPU | REZ-1 | |
| EMPX | Empiregas Equipment Corporation | |
| EMRY | Eastern Maine Railway Company | |
| EMTU | East-Med Tanks International | |
| EMUU | REZ-1 | |
| EN | Canadian Pacific Railway (Esquimalt & Nanaimo) | |
| ENDX | Joseph Transportion de Mexico S.A. de C.V. | |
| ENGX | Englehard Corporation | |
| ENR | E and N Railway Company (1998) Limited | |
| ENRX | United States Enrichment Corporation | |
| ENSZ | Norfolk Southern Railway Company | |
| EOGX | Union Carbide Ethylene Oxide/Glycol Company | |
| EPAX | Exxon Mobil Corporation | |
| EPCX | Enterprise Products Company | |
| EPIX | EPIC | |
| EPRY | East Penn Railway Incorporated | |
| EPTC | East Portland Traction Company | |
| EQUX | Equistar Chemicals | |
| ERBU | Containers for Bulk Haul Kieserling | |
| ERCU | Erco Industries Limited | |
| ERCX | EXCEL Railcar Corporation | |
| ERFU | Ermefer S.A. | |
| ERLX | General Electric Rail Services | |
| ERSX | Excel Railcar Services Incorporated | |
| ESCX | First Security Bank National Association | |
| ESHR | Eastern Shore Railroad Incorporated | |
| ESLJ | East St. Louis Junction Railroad | |
| ESLZ | East St. Louis Junction RR | |
| ESRX | Empire State Railcar Incorporated | |
| ESSU | K Line | |
| ESSX | Colonial Chemical Company | |
| ETC | East Texas Central Railroad | |
| ETCX | Eastman Chemical Company Incorporated | |
| ETL | Essex Terminal Railway Company | |
| ETRX | Arkansas Power and Light Company | |
| ETRY | East Tennessee Railway L.P. | |
| ETSX | Emery Tree Service Incorporated | |
| ETTX | TTX Company | |
| EUGX | Farmland Industries Incorporated | |
| EURX | Eurocan Pulp and Paper Company | |
| EUSX | Exxon Company U.S.A. | |
| EV | Everett Railroad Company | |
| EVAU | Eisenbahn-Vverkehrsmittel A.G. | |
| EVT | Evansville Terminal Company Incorporated | |
| EWEX | Commonwealth Edison Company | |
| EWSX | Indianapolis Power and Light Company | |
| EXFU | Exsif | |
| EXMX | Express Marco Incorporated | |
| FAIX | FAIX Leasing | |
| FALX | Falk Corporation | |
| FANU | Brenner Tank Incorporated | |
| FAPR | Floydada and Plainview Railroad | |
| FBAU | Ahlers Lines NV | |
| FBDC | Ford County Historical Railroad Preservation Foundation | |
| FBFU | Marine Transworld Equip. Corporation | |
| FBMU | CIE Maritime Belge S.A. | |
| FBMX | Fayblock Materials | |
| FBSU | Franco Belgian Services | |
| FBZU | China Ocean Shipping Company | |
| FC | Fulton County Railroad Incorporated | |
| FCCM | Compania de Ferrocarriles Chiapas Mayab S.A. de C.V. | |
| FCCX | Foxley Cattle Company | |
| FCEN | Florida Central Railroad Company Incorporated | |
| FCEX | Cenex Harvest States Cooperative | |
| FCHZ | Burlington Northern and Santa Fe Railway Company | |
| FCM | Ferrocarriles Nacionales de Mexico | |
| FCOX | FLO CO2 Incorporated | |
| FCP | Ferrocarriles Nacionales de Mexico | |
| FCPZ | National Railways of Mexico (Ferrocarriles Nacionales) | |
| FCSX | Florida Crushed Stone Company | |
| FCTX | Farmers Commodities Transportation | |
| FDDM | Union Pacific Railroad Company | |
| FDSU | Foodsource Incorporated | |
| FDSZ | Foodsource Incorporated | |
| FEC | Florida East Coast Railway Company | |
| FECU | Yamashita-Shinnihon Line | |
| FECZ | Florida East Coast Railway Company | |
| FEIX | Farmers Elevator Incorporated of Grace City | |
| FFEZ | Frozen Food Express | |
| FFFZ | Flexi-Van Leasing Incorporated | |
| FFIX | Procor Limited | |
| FFTX | Fun Trains Incorporated | |
| FGCX | Florida Gulf Coast Railroad Museum Incorporated | |
| FGER | Fruit Growers Express Company | |
| FGGX | Farmers Grain Co-Operative | |
| FGLK | Finger Lakes Railway Corporation | |
| FGLX | Factor Gas Liquids Incorporated | |
| FGMR | Fruit Growers Express Company | |
| FGWX | Federal Grain Inspection Service (USDA) (Scale Test Cars) | |
| FILX | Wellman Incorporated | |
| FINU | Interpool Limited | |
| FINX | Trinity Rail Management Incorporated | |
| FIR | Flats Industrial Railroad Company | |
| FISZ | Ecorail Incorporated | |
| FJLX | Big West Oil Company | |
| FLAX | Flexsys America L.P. | |
| FLCX | Flex Leasing Corporation | |
| FLDX | DTE Transportation Services Incorporated | |
| FLEX | RailLease Incorporated | |
| FLIX | Farmland Industries Incorporated | |
| FLJX | Big West Oil Company | |
| FLNX | R.P. Flynn Incorporated d/b/a Ohio Railway Supply | |
| FLOX | Flex Leasing Corporation | |
| FLRX | ADM Milling Company | |
| FLSX | Great Miami Incorporated | |
| FLT | Foss Launch and Tug | |
| FLXU | Flexi-Van Containers/Chassis | |
| FLXZ | Flexi-Van Leasing Incorporated | |
| FMCU | FMC Corporation Industrial Chenical Group | |
| FMGU | Flota Mercante Grancolombiana S.A. | |
| FMID | Florida Midland Railroad Company Incorporated | |
| FMIX | CCKX Incorporated | |
| FMLX | FMC Corporation | |
| FMOX | FMC Corporation | |
| FMRC | Farmrail Corporation | |
| FNAX | Ferrellgas LLP | |
| FNE | TFM S.A de C.V. | |
| FNOR | Florida Northern Railroad Company Inc | |
| FP | Fordyce and Princeton Railroad Company | |
| FPAX | Formosa Transrail Corporation | |
| FPBX | International Paper Corporation | |
| FPCX | Oxy Vinyls LP | |
| FPN | Ferrocarriles Nacionales de Mexico | |
| FPPX | Fayette Power Project (Texas) | |
| FPXZ | Flexi-Van Leasing Incorporated | |
| FRDN | H and S Railroad Company Incorporated | |
| FREU | ABS Industrial Verification Incorporated | |
| FRLU | Farrell Lines Incorporated | |
| FRR | Falls Road Railroad Company Incorporated | |
| FRSU | China Ocean Shipping Company | |
| FRTX | Farm-City Transport Incorporated | |
| FRVR | Fox Valley and Western Limited | |
| FSHX | General Electric Rail Services | |
| FSIX | FSIX Incorporated | |
| FSR | Fort Smith Railroad Company | |
| FSRR | Ferrocarril del Sureste S.A. de C.V. | |
| FST | Ferrocarriles Nacionales de Mexico | |
| FSTU | Fastrac Intermodal LLC | |
| FSTX | Fuel Supply Trust | |
| FSTZ | Fastrac Intermodal LLC | |
| FSUD | Fort Street Union Depot Company | |
| FSVB | Fort Smith and Van Buren Railway Co | |
| FTCU | Firsttank Corporation | |
| FTMZ | Fruit Growers Express Company | |
| FTSX | Fairmont Tamper | |
| FTTX | TTX Company | |
| FUCU | Shinko Pantec Company Limited | |
| FURX | First Union Rail | |
| FUS | Ferrocarriles Nacionales de Mexico | |
| FVIU | Flexi-Van Incorporated | |
| FVIZ | Flexi-Van Leasing Incorporated | |
| FVLZ | Venezuelan Line | |
| FVRR | Fredonia Valley Railroad Incorporated | |
| FVW | Fox Valley and Western Limited | |
| FWCR | Florida West Coast Railroad Incorporated | |
| FWD | Burlington Northern and Santa Fe Railway Company (Fort Worth & Denver) | |
| FWDB | Fort Worth and Dallas Belt Railroad | |
| FWDR | Fort Worth and Dallas Railroad Company | |
| FWIU | Trans Ocean Limited | |
| FWLX | Foster Wheeler Limited | |
| FWRY | Fillmore Western Railway Company | |
| FWTZ | Flexi-Van Leasing Incorporated | |
| FWWR | Fort Worth and Western Railroad Company | |
| FXE | Ferrocarril Mexicano S.A. de C.V | |
| GA | CSX Transportation Incorporated (Georgia Railroad) | |
| GAAB | Georgia and Alabama Division South Carolina Central Railroad Company | |
| GABX | General American Marks Company | |
| GACX | General American Marks Company | |
| GAEX | General American Marks Company | |
| GAFX | Fuller Company | |
| GALX | Georgia Power Company | |
| GAMX | Arrendadora Nacional De Carros De Ferrocaril | |
| GANO | Georgia Northern Railway Company | |
| GAPX | Georgia Gulf Corporation-Plaquemine Division | |
| GARX | General American Marks Company | |
| GASX | General American Marks Company | |
| GATU | Gateway Container Leasing | |
| GATX | General American Marks Company | |
| GBRX | Greenbrier Leasing Corporation | |
| GBRY | Gettysburg Railway. | |
| GBRZ | Greenbrier Leasing Corporation | |
| GBW | Canadian National (Green Bay & Western) | |
| GC | Georgia Central Railway L.P. | |
| GCAU | G.C.A. Transport Limited | |
| GCCX | GATX Capital Corporation | |
| GCDU | Overseas Container Limited | |
| GCEU | Genstar Container Corporation | |
| GCEZ | Genstar Container Corporation | |
| GCFX | Alstom Canada Incorporated - Transport | |
| GCIX | Gabriel Chemicals Incorporated | |
| GCLX | Gold Coast Limited | |
| GCLZ | Global Chassis Leasing Incorporated | |
| GCOX | Gold Coast Railroad Museum | |
| GCPU | Burlington Northern and Santa Fe Railway Company | |
| GCPX | Georgia Gulf Corporation PVC Division | |
| GCRX | Grand Canyon Railway Incorporated | |
| GCSR | Gulf Colorado and San Saba Railway | |
| GCSU | G.C.S. Containers Service S.A. | |
| GCTU | Gulf Container Lines | |
| GCTX | General Chemical Corporation | |
| GCW | Garden City Western Railway Company | |
| GCX | Honeywell International Incorporated | |
| GDCX | General American Marks Company | |
| GDJX | Grimmel Industries | |
| GEAX | Trinity Rail Management Incorporated | |
| GECX | General Electric Company Transportation Systems Business Operations | |
| GECZ | GE Captial Container Finance Corporation | |
| GEGX | GE Gas Turbine | |
| GELX | Grain Marketing L.C. | |
| GEMX | General Electric Rail Services | |
| GENX | General Electric Rail Services | |
| GEOX | GEO Specialty Chemicals | |
| GEPX | Trinity Rail Management Incorporated | |
| GET | Gettysburg & Northern Railway | |
| GETX | General American Marks Company | |
| GETZ | Transport International Pool Incorporated | |
| GEX | General Electric Company | |
| GEXR | Goderich-Exeter Railway Company Limited | |
| GF | Norfolk Southern Railway Company (Georgia & Florida) | |
| GFAX | Gordon Fay Associates Incorporated | |
| GFC | Grand Falls Central Railway Company Limited | |
| GFCZ | General Foods Corporation | |
| GFR | Grand Forks Railway Company | |
| GFRR | Georgia and Florida Railroad Company | |
| GFSX | GATX Capital Corporation | |
| GGCX | Georgia Gulf Corporation-Plaquemine Div | |
| GGIX | Garvey International Garvey Grain Division | |
| GGMX | Golden Gate Railroad Museum Incorporated | |
| GGPX | General American Marks Company | |
| GGS | Georgia Great Southern Division South Carolina Central Railroad | |
| GHBX | G.Heileman Brewing CompanyIncorporated | |
| GHRD | Green Hills Rural Development d/b/a Chillicothe-Brunswick Rail Maintenance Authority | |
| GIEX | GATX Capital Corporation | |
| GIHX | Cornerstone C and M Incorporated d/b/a Gifford Hill and Company | |
| GILX | Gilman Paper Company | |
| GIMX | GATX Capital Corporation | |
| GITM | Golden Isles Terminal Railroad Incorporated | |
| GKLX | Gold Kist Incorporated | |
| GLBZ | Trac Lease Incorporated | |
| GLCU | Flex-Van Leasing Incorporated | |
| GLCX | Great Lakes Carbon Corporation | |
| GLKU | Great Lakes Chemical Corporation | |
| GLKX | Great Lakes Chemical Corporation | |
| GLNX | GLNX Corporation | |
| GLRX | Georgetown Loop Railroad Incorporated | |
| GLSR | Gloster Southern Railroad Corporation | |
| GLSX | Glacier State Distribution Services Incorporated | |
| GMGX | M and G Incorporated | |
| GMHX | General Leasing Corporation | |
| GMIX | Chicago Freight Car Leasing Company | |
| GMO | Illinois Central Railroad Company (Gulf, Mobile & Ohio) | |
| GMRC | Green Mountain Railroad Corporation | |
| GMRY | Great Miami and Scioto Railway Company | |
| GMSR | Kansas City Southern Railway Company (Gulf & Mississippi) | |
| GN | Burlington Northern and Santa Fe Railway Company (Great Northern) | |
| GNA | Kansas City Southern Railway Company | |
| GNAX | Holnam Incorporated | |
| GNBC | Grainbelt Corporation | |
| GNCU | Gallatin National Company | |
| GNFX | City of Gainesville Florida | |
| GNLX | Georgia Industrial Leasing Company | |
| GNRR | Georgia Northeastern Railroad Company | |
| GNWR | Genesee and Wyoming Railroad Company | |
| GOCU | Greenfield Overseas Cont. Incorporated | |
| GOCX | Chevron Phillips Chemical Company | |
| GOHX | General American Marks Company | |
| GONX | Railgon Company | |
| GOT | Toronto Area Transit Operating Authority | |
| GOTU | Gulf Overseas Towing | |
| GPBX | Georgia-Pacific Corporation | |
| GPCX | Georgia-Pacific Corporation | |
| GPDX | General American Marks Company | |
| GPFX | General American Marks Company | |
| GPIX | Sunbelt Cement | |
| GPLU | Management Control and Maintenance S.A. | |
| GPLX | General American Marks Company | |
| GPMX | Georgia-Pacific Corporation- Mid Continent Wood Products Mfg.Division | |
| GPPX | Georgia-Pacific Corporation | |
| GPSX | Georgia-Pacific Corporation Eastern Wood Products Mfg.Division | |
| GPUX | GPU Service Corporation | |
| GR | Grand Rapids Eastern Railroad Incorporated | |
| GRCX | Granite Rock Company | |
| GRDX | Grand River Dam Authority (Okla.) | |
| GREX | Georgetown Rail Equipment Company | |
| GRFF | Georgia and Florida Railroad Company | |
| GRIV | Gauley River Railroad LLC | |
| GRMX | Gopher State Railway Museum | |
| GRN | Carolina Piedmont Division South Carolina Central Railroad Company | |
| GRNR | Grand River Railway Company | |
| GROX | First Union Rail | |
| GRPX | CIT Group/Capital Finance Group | |
| GRR | Georgetown Railroad Company | |
| GRRX | Wampum Hardware | |
| GRSX | Gunderson Rail Services | |
| GRTX | Wheelabrator Coal Services Company | |
| GRWR | Great Walton Railroad Company | |
| GRYX | John H. Grace Company | |
| GSAX | Granite State Concrete Company | |
| GSCU | Eurotainer U.S. Incorporated | |
| GSCX | GATX/GLC Leasing Corporation | |
| GSF | Georgia Southern and Florida Railway Company | |
| GSIX | Williams Energy Ventures Incorporated | |
| GSM | Great Smokey Mountains Railway | |
| GSNX | Helm Financial Corporation | |
| GSOR | Indiana Hi-Rail Corporation | |
| GSRX | Golden Spike Railroad Services | |
| GSSX | Gopher State Scrap and Metal | |
| GSTU | Genstar Container Corporation | |
| GSWR | Georgia Southwestern Division South Carolina Central Railroad Company | |
| GTA | Grand Trunk Western Railroad Incorporated | |
| GTAX | Harvest States Cooperative | |
| GTEU | General Transport Equipment Co Inc | |
| GTIS | Guilford Transportation Industries | |
| GTIZ | G. T. Intermodal U.S.A. | |
| GTLZ | G. T. Leasing | |
| GTPZ | TIT Services | |
| GTR | Great River Railroad; d/b/a Rosedale-Bolivar County Port Comm. | |
| GTRA | Golden Triangle Railroad | |
| GTTX | TTX Company | |
| GTW | Grand Trunk Western Railroad Incorporated | |
| GTWQ | Grand Trunk Western Railroad Incorporated | |
| GTZZ | GT Trucking Incorporated | |
| GU | Grafton and Upton Railroad Company | |
| GUAX | Georgia Power Company | |
| GUEX | General American Marks Company | |
| GURZ | Grafton and Upton Railroad Company | |
| GVDX | Oxy Vinyls LP | |
| GVSR | Galveston Railroad L.P. | |
| GWAX | Railroad Salvage and Restoration Incorporated | |
| GWIX | GWI Leasing Corporation | |
| GWR | Great Western Railway Company | |
| GWRC | Georgia Woodlands Railroad Company | |
| GWRS | Great Western Railway Company | |
| GWSR | Great Western Railway Company | |
| GWSW | GWI Switching Services L.P. | |
| GWWE | Gateway Eastern Railway Company | |
| GWWR | Gateway Western Railway | |
| HABX | Habco International Incorporated | |
| HALX | Holland American Line - Westours Incorporated | |
| HAMU | Costa Line | |
| HANU | Hansa Line | |
| HANX | L. Hansen's Forwarding | |
| HAPX | Helm-Atlantic Leasing LLP | |
| HARX | General Electric Rail Services Corporation | |
| HATU | H A T Enterprises Incorporated | |
| HATX | Helm Financial Corporation | |
| HATZ | H A T Enterprises Incorporated | |
| HB | Hampton and Branchville Railroad Company Incorporated | |
| HBGX | HBG Enterprises of Tampa Incorporated | |
| HBL | Harbor Belt Line | |
| HBRY | Hudson Bay Railway Company | |
| HBT | Houston Belt and Terminal Railway | |
| HBWX | Georgia Power Company | |
| HCDU | ER Nahrungsmittel Ges.MBH and Company KG. | |
| HCGX | North American Salt Company | |
| HCIU | Steam Packet Yard | |
| HCLX | Basell Canada Incorporated | |
| HCMX | Harnischfeger CCorporation | |
| HCPX | Occidental Chemical Corporation | |
| HCRR | Honey Creek Railroad Incorporated | |
| HCRY | Huron Central Railway | |
| HCSX | Helm Chesapeake LLP | |
| HCTX | Martin Marietta Corporation | |
| HDMU | Hyundai Merchant Marine (America) Incorporated | |
| HDMZ | Hyundai Merchant Marine (America) Incorporated | |
| HDSX | RailAmerica Equipment Corporation | |
| HE | Hollis and Eastern Railroad Company | |
| HECX | Hoosier Energy REC Incorporated | |
| HELX | Helm Financial Corporation | |
| HENU | Provincial Trailer Rentals | |
| HENZ | Provincial Trailer Rentals | |
| HEPX | Ontario Hydro | |
| HEQX | HELM Financial Corporation | |
| HERX | General Electric Rail Services Corporation | |
| HESR | Huron and Eastern Railway Company | |
| HESU | Heritage Environmental Services Incorporated | |
| HESX | Heritage Environmental Services | |
| HESZ | Heritage Environmental Services Incorporated | |
| HGPX | Harrison Gypsum Company | |
| HHEX | H and H Engineering Construction Incorporated | |
| HHHX | Public Service Company of Colorado | |
| HIIX | TTX Company - Hamburg Division | |
| HINX | Heritage Inks International Corporation | |
| HIPX | Reliant Energy HL and P | |
| HJBX | H.J. Baker and Bros.Incorporated | |
| HJCU | HANJIN Container Lines Limited | |
| HJCZ | HANJIN Container Lines Limited | |
| HJVX | Helm Locomotive Leasing | |
| HKGU | Hong Kong Island | |
| HKIU | Hong Kong Islands Line America S.A. | |
| HKPU | Hong Kong Islands Line | |
| HKTU | Hong Kong Islands Line America S.A. | |
| HKUU | Hong Kong Islands Line America S.A. | |
| HKZZ | Hong Kong Islands Line America S.A. | |
| HLBZ | Hill Brothers Transportation | |
| HLCU | Hapag-Lloyd A G | |
| HLCX | HELM Financial Corporation | |
| HLEX | Hunstman Polymers Corporation | |
| HLGX | HELM Financial Corporation | |
| HLLX | Helm Locomotive Leasing | |
| HLMX | HELM Financial Corporation | |
| HLSC | Hampton Railway Incorporated | |
| HMAX | Huntsman Corporation | |
| HMCR | Huntsville and Madison County Railroad Authority | |
| HMCX | HoltraChem Manufacturing Company LLC | |
| HMFX | Florida Rock Industries Incorporated | |
| HMIX | Henkels and McCoy Inc | |
| HMJX | HELM Financial Corporation | |
| HMR | Hoboken Manufacturers | |
| HN | Hutchinson and Northern Railway Company | |
| HNPU | Navale Et Commerciale Havraise Penninsulaire | |
| HOCU | Hoegh Container Lines | |
| HOEU | Hoechst Aktiengesellschaft | |
| HOG | Heart of Georgia Railroad | |
| HOKX | Occidental Chemical Corporation | |
| HOMX | PLM International Incorporated | |
| HONX | Honeymead Products Company (Division of Harvest States Cooperatives) | |
| HOS | Hoosier Southern Railroad | |
| HOWZ | Flex-Van Leasing Incorporated | |
| HOYU | Hoyer GMBH Internationale | |
| HPAX | International Paper Company | |
| HPCX | Hercules Incorporated | |
| HPIX | Besell USA Incorporated | |
| HPJX | Helm-Pacific Leasing | |
| HPLX | Exxon Mobil Corporation | |
| HPPX | Huntsman Polypropylene Corporation | |
| HPTD | High Point Thomasville and Denton Railroad | |
| HPTU | Highway Pipeline | |
| HRCX | Heritage Railcar | |
| HRDX | Silver Star Enterprises Incorporated | |
| HREX | Heavy Railroad Excavations Incorporated | |
| HRLU | Hudson Railway Equipment Company | |
| HRLZ | Hudson Railway Equipment Company | |
| HRRC | Housatonic Railroad Company | |
| HRRX | On-Track Railcar Services Incorporated | |
| HRS | Holidaysburg and Roaring Spring Railroad Company | |
| HRSX | Harbor Rail Services of California Incorporated | |
| HRT | Hartwell Railroad Company | |
| HS | H and S Railroad Company Incorporated (Hartford & Slocomb) | |
| HSCX | Steel Wheels Limited | |
| HSFZ | Atchison Topeka and Santa Fe Railway | |
| HSIX | Housing Starts Incorporated | |
| HSLU | Haulage Services Limited | |
| HSRR | Hardin Southern Railroad Incorporated | |
| HSRZ | H and S Railroad Company Incorporated | |
| HTCX | General Electric Rail Services Corporation | |
| HTMU | Hansen and Tidemann Incorporated | |
| HTSU | High Tech Transport Limited | |
| HTTX | TTX Company | |
| HTW | Hoosac Tunnel and Wilmington | |
| HUBA | Burlington Northern and Santa Fe Railway Company | |
| HUDX | Hudson Technologies Incorporated | |
| HUKU | Huktra (UK) Limited | |
| HUTX | Hutchinson Transportation Company | |
| HWCX | Halliburton Company | |
| HWPX | Hiram Walker and Sons Incorporated | |
| HYDX | Praxair Incorporated | |
| HYWX | Georgia Power Company | |
| HZGX | Herzog Contracting Corporation | |
| IAIS | Iowa Interstate Railroad Limited | |
| IALU | Japan Line Ltd | |
| IANR | Iowa Northern Railway | |
| IAPX | Air Liquide America Corporation | |
| IASZ | Iowa Interstate Railroad Incorporated | |
| IATR | Iowa Traction Railroad Company | |
| IBCX | Indiana Boxcar Corporation | |
| IBNU | Interpool Container Pty Limited | |
| IBPX | Trinity Industries Leasing Company | |
| IBT | International Bridge and Terminal Company | |
| IBYU | Tuscola and Saginaw Bay Railway Company | |
| IC | Illinois Central Railroad Company | |
| ICCU | ICCU Containers Incorporated | |
| ICE | Iowa, Chicago & Eastern Railroad | |
| ICEU | Inter-Continental Equipment Incorporated | |
| ICEZ | GATX Capital Corporation | |
| ICG | Illinois Central Railroad Company | |
| ICGU | Illinois Central Railroad Company | |
| ICGZ | Illinois Central Railroad Company | |
| ICHU | Ingetra AG | |
| ICIU | Intermodal Containers Incorporated | |
| ICIX | ICI Americas Incorporated | |
| ICIZ | Intermodal Containers Incorporated | |
| ICLU | International Cont. Leasing | |
| ICLX | Intercoastal Leasing Incorporated | |
| ICLZ | International Chassis Leasing Incorporated | |
| ICMU | Interox America | |
| ICMX | Illinois Cereal Mills Incorporated | |
| ICOU | Japan Line Limited | |
| ICPU | Intermodal Container Pool Inc | |
| ICPZ | Intermodal Container Pool Inc | |
| ICRK | Indian Creek Railroad Company | |
| ICRU | Ingetra AG | |
| ICRX | Island Creek Corporation | |
| ICRZ | Illinois Central Railroad Company | |
| ICSU | Transamerica Leasing Incorporated | |
| ICSZ | Transamerica Leasing Incorporated (Union Pacific) | |
| IDCU | Ideal Container | |
| IDOX | U.S. Dept. of Energy Idaho Operations Office | |
| IDSZ | Industrial Distribution Service Incorporated | |
| IEAU | Intermodal Equipment Associates | |
| IELZ | Iran Express Lines | |
| IESX | Allient Energy. | |
| IFBX | General Electric Rail Services | |
| IFCX | Interstate Foods Corporation | |
| IFLU | Interflow | |
| IFSU | Interlink Freight Systems | |
| IFWZ | Independent Freightway Incorporated | |
| IHAU | Ihora Chemical Industrial | |
| IHB | Indiana Harbor Belt Railroad Company | |
| IHCU | CSD Assignment-temporary | |
| IHRC | Indiana Hi-Rail Corporation | |
| IHSX | Western Vancouver Island Heritage Society (Alberni Pacific Railway) | |
| IICZ | Illinois Central Railroad Company | |
| IIIU | III Transportation | |
| IIIZ | III Transportation | |
| IILU | Independent Container Line | |
| IILZ | Independent Container Line | |
| IIRZ | III Transportation | |
| IKCU | Interpool | |
| IKKU | ICCU Containers Incorporated | |
| IKSU | Transamerica Leasing Incorporated | |
| ILDX | General Electric Company - Lighting Business Group | |
| ILMU | Flow Line Transport | |
| ILSX | Independent Locomotive Service | |
| ILTU | International Liquid Transport Company Bv | |
| ILW | Illinois Western Railroad | |
| IMCX | IMC Global Operations Incorporated | |
| IMEX | Indiana and Michigan Electric Company | |
| IMMX | Industrial Minera Mexico S.A. | |
| IMRL | I and M Rail Link LLC | |
| IMRR | Illinois and Midland Railroad | |
| IMSX | International Mill Service | |
| IMSZ | Intermodal Systems Incorporated | |
| IMTX | Ag Processing Incorporated | |
| IMXZ | Intermodal Express Incorporated | |
| IN | Indiana Northeastern Railroad Company | |
| INCU | Intercontinental Transport B.V. (ICT) | |
| INCX | INCO Limited | |
| INCZ | Intercontinental Transport B.V. (ICT) | |
| INCZ | Intercontinental Transport B.V. (ICT) | |
| INDU | Dorothea Marine Entreprise and Management | |
| INDX | Indelpro S.A. de C.V. | |
| INFX | Infineum USA Incorporated | |
| INGX | General Electric Rail Services Corporation | |
| INKU | Interpool Limited | |
| INLX | Incoal Company | |
| INOH | Indiana and Ohio Railroad Incorporated | |
| INOX | Indiana and Ohio Rail Corporation | |
| INPR | Idaho Northern and Pacific Railroad | |
| INRD | Indiana Rail Road Company | |
| INSU | Intersub Services | |
| INT | Norfolk Southern Railway Company | |
| INTU | Interpool Container Pty Limited | |
| INTZ | Interpool Limited | |
| IOCR | Indiana and Ohio Central Railroad | |
| IOCX | Rail Enterprises Incorporated | |
| IOLU | Textainer Equipment Management (U.S.) Limited | |
| IOPX | MidAmerican Energy Company | |
| IORY | Indiana and Ohio Railway Company | |
| IPCU | Independent Container Line | |
| IPCX | International Paper Company | |
| IPEX | Indeck Power Equipment Company | |
| IPLX | Illinois Power Company | |
| IPOX | A and R Leasing Limited Liability Corporation (LLP) | |
| IPPX | Intermountain Power Agency (Utah) | |
| IPSX | GATX Capital Corporation | |
| IPWX | Allient Energy | |
| IQIX | Industria Quimica Del letmo S.A. de C.V. | |
| IR | Illinois RailNet Incorporated | |
| IREX | IRECO Incorporated | |
| IRMZ | III Transportation | |
| IRRS | International Rail Road Systems Incorporated | |
| IRSZ | Interpool/Rail Services Limited | |
| ISCU | I.S.C. Chemicals Ltd | |
| ISCX | ISC Incorporated | |
| ISIZ | Intermodal Services Incorporated | |
| ISLU | Islandia Limited | |
| ISQ | Indiana Southwestern Railway Company | |
| ISR | Iowa Southern Railroad Company | |
| ISRR | Indiana Southern Railroad CompanyIncorporated | |
| ISSR | ISS Rail Incorporated | |
| ISSU | Iceland SteamshipCo Limited | |
| ITAU | Italian Lines | |
| ITAX | Illinois Transit Assembly Incorporated | |
| ITB | Island Tug and Barge | |
| ITC | Norfolk Southern Railway Company (Illinois Terminal Railroad) | |
| ITCU | Intercontainer | |
| ITCX | International Technologies Corporation | |
| ITDX | SULCOM Incorporated | |
| ITEU | Compagnia Italiana Investimenti Alternativi | |
| ITGX | ITG Incorporated | |
| ITIU | International Transchem Incorporated | |
| ITIX | Intermodal Technologies Incorporated | |
| ITKU | Intertank Limited | |
| ITLU | Itel Containers International Corporation | |
| ITLX | General Electric Rail Services Corporation | |
| ITRU | Itel Containers International Corporation | |
| ITSU | Iberhansaetic Transport System | |
| ITSZ | International Transportation Service Incorporated | |
| ITTX | TTX Company | |
| ITXX | Tiaxcalteca de Industrias S.A. de C.V. | |
| IU | Indianapolis Union | |
| IVLU | Ivarans Rederei A/S | |
| IXEU | Interox Quimica SA | |
| IXWU | Interox Chemicals Ltd | |
| JACX | Johnstown America Corporation | |
| JAIX | JAIX Leasing Corporation | |
| JALX | JAIX Leasing Corporation | |
| JANX | JAN Incorporated | |
| JBHU | J. B. Hunt Transport Incorporated | |
| JBHZ | J. B. Hunt Transport Incorporated | |
| JBPX | PacifiCorp Electric Operations and Idaho Power Company - Jim Bridger Project | |
| JBRX | Bakery Trading Company | |
| JBTU | Jumbotainer BV Barendecht | |
| JCLX | Mid-Am Equipment Incorporated | |
| JCSX | Heritage Operating L.P. | |
| JDIX | Jim Dobbas Incorporated | |
| JDMX | Joseph Transportation Incorporated | |
| JDSX | M and C Railcar Leasing LLC | |
| JE | Joppa and Eastern Railroad Company | |
| JECX | Western Resources Incorporated (Kans.) | |
| JEFW | Jefferson Warrior Railroad Company | |
| JEPX | PSI Energy Incorporated | |
| JGLU | Juglinija Lines | |
| JGRU | John G. Russell Transport Limited | |
| JHMX | Alabama Power Company | |
| JHPX | NOVA Chemicals (USA) Incorporated | |
| JJJX | JJ Rail Car Leasing Limited | |
| JJRD | J and J Railroad Incorporated | |
| JKBX | John Kenneth Burbridge | |
| JKL | J.K. Line Incorporated | |
| JLAU | Japan Line Limited | |
| JLDU | Japan Line Limited | |
| JLEU | Japan Line Limited | |
| JLEZ | Japan Line Limited | |
| JLHU | Japan Line Limited | |
| JLLU | Japan Line Limited | |
| JLLX | LaRoche Industries Incorporated | |
| JLLZ | Japan Line Limited | |
| JLMU | Japan Line Limited | |
| JLPU | Japan Line Limited | |
| JLSU | Japan Line Limited | |
| JLSZ | Japan Line Limited | |
| JLTU | Japan Line Limited | |
| JMHX | J.M. Huber Corporation | |
| JMJZ | J.M.J. Projects Incorporated | |
| JNSX | JNS Marketing Company Coastline Rail Service Division | |
| JORX | Jormac S.A. de C.V. | |
| JOTU | Japan Oil Transportation Company Limited | |
| JPTU | Daikin Industries | |
| JRCX | GLNX Corporation | |
| JRSX | J.R. Simplot Company | |
| JSCU | Flexi-Van Leasing Incorporated | |
| JSCZ | Flexi-Van Leasing Incorporated | |
| JSRC | Jackson and Southern Railroad Company | |
| JSSU | China Navigation Company Limited | |
| JSSX | Jersey Shore Steel Company | |
| JTAX | Trinity Rail Management Incorporated | |
| JTCO | Jacksonville Terminal Company | |
| JTHX | Citicorp Railmark Incorporated | |
| JTMX | ISG Resources Incorporated | |
| JTSZ | Jontri Transportation Company | |
| JTTX | TTX Company | |
| JUGU | Jogolinja | |
| JVRR | Juniata Valley Railroad Company | |
| JWAX | General Electric Rail Services Corporation | |
| JWRX | Alabama Power Company | |
| KABX | Canadian Resource Distribution Incorporated | |
| KACX | Kaiser Aluminum and Chemical Corporation | |
| KAIX | Rinker Materials Corporation | |
| KAMX | Kamen Incorporated | |
| KBSR | Kankakee Beaverville and Southern Railroad Company | |
| KBSZ | Kankakee Beaverville and Southern Railroad | |
| KCCX | Kennecott Utah Copper Corporation | |
| KCDX | Eastman Kodak Company | |
| KCGX | Southdown Incorporated | |
| KCIX | Nova Chemicals Incorporated | |
| KCLX | Kansas City Power and Light Company | |
| KCPX | Kemira Chemicals Canada Incorporated | |
| KCRX | Kootenay Central Rail Services Limited | |
| KCS | Kansas City Southern Railway Company | |
| KCSU | Kansas City Southern Railway Company | |
| KCSZ | Kansas City Southern Railway Company | |
| KCTV | KCT Railway Corporation | |
| KCWX | Kimberly-Clark of Canada Limited | |
| KDCX | Eastman Chemical Canada Incorporated | |
| KDEX | GLNX Corporation | |
| KE | Kansas Eastern Railroad Incorporated | |
| KEBX | Ronald L. Boothman Remainder Trust | |
| KELX | Kellogg Company | |
| KENN | Kennecott Company Railroad | |
| KEYX | Keywell Corporation | |
| KFGX | Knauf Fiber Glass GmbH | |
| KFMX | Oils Unlimited | |
| KGCX | INDSPEC Chemical Corporation | |
| KGFX | Kingsford Company | |
| KGLX | Commonwealth Edison Company | |
| KGRX | Kasgro Rail Corporation | |
| KIIX | Koppers Industries Incorporated | |
| KJR | Berkman Rail Services Incorporated (d.b.a Kiski Junction Railroad) | |
| KJRY | Keokuk Junction Railway | |
| KKLU | K Line | |
| KKLZ | K Line | |
| KKRR | Knox and Kane Railroad Company | |
| KKTU | Kerr Steamship 'K' Line | |
| KLCU | IBJ Leasing Company Limited | |
| KLSC | Kalamazoo Lake Shore and Chicago Railway | |
| KM | Kansas and Missouri Railway and Terminal Company | |
| KMCU | Mitsui O.S.K. Lines Ltd | |
| KMCX | Kerr-Mcgee Coal Corporation (Okla.) | |
| KMEU | K Line | |
| KMTU | Hyundai Merchant Marine (America) Incorporated | |
| KMTZ | Hyundai Merchant Marine (America) Incorporated | |
| KMUX | Kershaw Manufacturing Company | |
| KNC | Kingcome Navigation | |
| KNDX | KND Rail Services Incorporated | |
| KNLU | Nedlloyd Lines | |
| KNOX | Knox Metals Corporation | |
| KPCX | Koppers Industries Incorporated | |
| KPCZ | K and P Cartage Company | |
| KPGX | Kentucky Processing Company | |
| KPLU | K Line | |
| KPLX | Western Resources Incorporated (Kans.) | |
| KPXX | Progress Rail Services Corporation | |
| KRIX | General Electric Rail Services Corporation | |
| KRR | Kiamichi Railroad Company LLP | |
| KSCU | Korea Shipping Corporation | |
| KSCZ | Korea Shipping Corporation | |
| KSW | Kansas Southwestern Railway | |
| KT | Kentucky and Tennessee Railway Company | |
| KTTX | TTX Company | |
| KTX | ACF Industries Incorporated | |
| KUCX | Kentucky Utilities Company | |
| KWCU | World Container Leasing Incorporated | |
| KWT | K.W.T. Railway Incorporated | |
| KWUX | Siemens Power Corporation | |
| KXHR | Knoxville and Holston River Railroad Company Incorporated | |
| KYLE | Kyle Railroad Company | |
| KYLU | N.Y.K. Line | |
| KYRX | Progress Rail Services Corporation | |
| LA | Kansas City Southern Railway Company | |
| LACX | Goodyear Tire and Rubber Company | |
| LAFX | Lafarge Corporation | |
| LAHX | Transportation Equipment Incorporated | |
| LAJ | Los Angeles Junction Railway | |
| LAKX | City of Lakeland (Fla.) | |
| LAL | Livonia Avon and Lakeville Railroad Corporation | |
| LANO | Penn Eastern Rail Lines Incorporated | |
| LANU | CATU Containers S.A. | |
| LAPT | Los Angeles Union Passenger Terminal | |
| LARU | Lanan Incorporated | |
| LBR | Lowville and Beaver River Railroad Company | |
| LBWX | Technical Propellants Incorporated | |
| LC | Lancaster and Chester Railway Company | |
| LCCX | Liquid Carbonic Corporation | |
| LCEX | Lone Star Industries Incorporated | |
| LCGX | Cargill Incorporated C.G.D. Division | |
| LCHX | LCP Transportation Incorporated | |
| LCIX | Praxair Incorporated | |
| LCLX | Ledcor Communications Limited | |
| LCPX | General American Marks Company | |
| LCR | Lake County Railroad | |
| LCRX | Lower Colorado River Authority (Texas) | |
| LCSX | Laclede Steel Company | |
| LCWX | LCP Chemicals-West Virginia Incorporated | |
| LDAX | Louisiana Agricultural Finance Authority | |
| LDCX | Louis Dreyfus Corporation | |
| LDRR | Louisiana and Delta Railroad Incorporated | |
| LDSX | Lambton Diesel Specialists Incorporated | |
| LEF | Lake Erie Franklin and Clarion Railroad Company | |
| LEFX | Greenville Leasing Company | |
| LEN | Lake Erie and Northern Railway Company | |
| LEOX | Golden Foods Incorporated | |
| LER | Logansport and Eel River Short-Line Company Incorporated | |
| LERX | PSI Energy Incorporated | |
| LEVX | Level Energy Incorporated | |
| LEWU | Norman Lewis Tankers B.V. | |
| LFCD | Linea Coahuila Durango S.A. de C.V. | |
| LFFZ | Burlington Northern and Santa Fe Railway Company | |
| LGEU | CATU Containers S.A. | |
| LGEX | L.G. Everist Incorporated | |
| LGNZ | Burlington Northern and Santa Fe Railway Company | |
| LGSX | Mid-American Energy Company | |
| LGTU | Liquid and Gas Transport Incorporated | |
| LGTX | Logistechs Incorporated | |
| LHFX | Lehigh Heavy Forge Corporation | |
| LHR | Norfolk Southern Railway Company (Lehigh & Hudson River) | |
| LHRR | Longhorn Railroad | |
| LHTX | Larsen Farms | |
| LI | Long Island Rail Road Company | |
| LIBU | Lib Leasing | |
| LINC | Lewis and Clark Railway Company | |
| LIRC | Louisville and Indiana Railroad Company | |
| LITX | Lite Industries Incorporated | |
| LJIX | Brown Trailer Incorporated | |
| LKRR | Little Kanawha River Rail Incorporated | |
| LKWR | Lackland Western Railroad Company | |
| LLCX | LLCX Incorporated | |
| LLIX | Services Unlimited | |
| LLLX | Louisiana Leasing Limited Of Illinois | |
| LLPX | Locomotive Leasing Partners LLC | |
| LM | Union Pacific Railroad Company (Litchfield & Madison) | |
| LMCU | World Container Leasing Incorporated | |
| LMIC | Lake Michigan and Indiana Railroad Company | |
| LMIX | LORAM Maintenance of Way Incorporated | |
| LMSX | Locomotive Manaagement Services | |
| LMTX | Chartrand's Tank Car Service Incorporated | |
| LMWX | MHC Incorporated Wholly Owned Subsidiary of Conagra Incorporated | |
| LN | CSX Transportation Incorporated | |
| LNAC | H and S Railroad Company | |
| LNAL | Louisville New Albany and Corydon Railroad | |
| LNTX | IES Utilities Incorporated | |
| LNW | Louisiana and North West Railroad Company | |
| LNWX | Locomotives Northwest Limited | |
| LOGU | Societe-Logemafer | |
| LOGX | Linden Leasing Incorporated | |
| LORU | Renzlor Securities Corporation | |
| LOSX | Locomotive Specialists Incorporated | |
| LOVX | American Colloid Company | |
| LOWU | Management Control and Maintenance S.A. | |
| LPIU | Leasing Partners Int. B.V. | |
| LPN | Longview Portland and Northern Railway Company | |
| LPRU | Losinjska Plovidba Mali Losing | |
| LRAX | Latinoamerican Railroad Association Incorporated | |
| LRCX | Livingston Rebuild Center Incorporated | |
| LRDX | Mid-American Energy Company | |
| LRIX | Lake Superior Eastern Rail Industries | |
| LRLX | General Electric Rail Services Corporation | |
| LRMX | Logistics Resource Management | |
| LRPA | Little Rock Port Railroad | |
| LRS | Laurinburg and Southern Railroad Co | |
| LRWN | Little Rock and Western Railway LP | |
| LRWY | Lackawanna Railway Incorporated | |
| LS | Luzerne and Susquehanna Railway Company | |
| LSBZ | Chicago Rail Link | |
| LSCX | D-H Investors (Relam Auditing Services) | |
| LSEU | One Way Lease Incorporated | |
| LSFZ | Burlington Northern and Santa Fe Railway Company | |
| LSI | Lake Superior and Ishpeming Railroad Company | |
| LSIU | L.S. Intertank | |
| LSIX | Liquid Sugars Incorporated | |
| LSMX | Progress Rail Services Corporation | |
| LSRC | Lake State Railway Company | |
| LSRR | Lone Star Railroad Incorporated | |
| LT | Lake Terminal Railroad Company | |
| LTCO | Lakeside Transportation LLC | |
| LTCR | Leelanau Transit Company | |
| LTCX | Praxair Incorporated | |
| LTEX | L.H.A.G.S. Incorporated (Larrys Truck and Electric Service) | |
| LTIU | Lloyd Triestine Di Navigazione S.P.A. | |
| LTLZ | Burlington Northern and Santa Fe Railway Company | |
| LTTX | TTX Company | |
| LTVX | LTV Steel Company | |
| LUBX | Luria Bros. A Division of Connell Limited Partnership | |
| LUCX | Services Unlimited | |
| LUN | Ludington and Northern Railway | |
| LUNX | General Electric Rail Services Corporation | |
| LUSX | LUSCAR Limited | |
| LUX | Tosco Corporation | |
| LV | Consolidated Rail Corporation | |
| LVAL | Lackawanna Valley Railroad Corporation | |
| LVRC | Lamoille Valley Railroad Company | |
| LVRR | Lycoming Valley Railroad Company | |
| LW | Louisville and Wadley Railway Company | |
| LWAX | Laidlaw Environmental Services | |
| LXOH | Lexington and Ohio Railroad Company | |
| LXVR | Luxapalila Valley Railroad Incorporated | |
| LYKU | Lykes Brothers Steamship CompanyIncorporated | |
| LYKZ | Lykes Brothers Steamship CompanyIncorporated | |
| LYNX | Round Butte Products | |
| MAA | Magma Arizona Railroad Company | |
| MACX | Mac Acquisitions. L.P. | |
| MADU | Magnum Speditionsgelleshaft GMBH | |
| MAEU | Maersk Line | |
| MAJU | Malaysian International Shipping Corporation | |
| MALX | Mid-America Locomotive and Car Repair Incorporated | |
| MALZ | American President Lines Incorporated | |
| MANX | Williams Energy Ventures Incorporated | |
| MAPX | Williams Energy Ventures Incorporated | |
| MARX | MidAmerican Energy Corporation | |
| MARZ | MARTRAC | |
| MATU | Matson Navigation Company | |
| MATZ | Matson Navigation Company | |
| MAW | Maumee and Western Railroad Corporation | |
| MAXU | Maxu Containers Limited | |
| MAXX | MidAmerican Energy Company | |
| MAYW | Maywood and Sugar Creek | |
| MB | M and B Railroad LLC | |
| MBCX | M.B.C.X. Leasing LLC | |
| MBIX | Morse Bros. Incorporated | |
| MBKX | MRC Rail Services LLC | |
| MBLX | Mobil Oil Corporation | |
| MBPX | MacMillan-Bloedell Incorporated | |
| MBSX | Mid-South Bulk Services Incorporated | |
| MC | Maine Coast Railroad Corporation | |
| MCCX | Mt. Vernon Coal Transfer Company (Ind.) | |
| MCDX | Sunbelt Cement Incorporated | |
| MCER | Massachusetts Central | |
| MCEU | Massachusetts Central Railroad Corporation | |
| MCEZ | Massachusetts Central Railroad Corporation | |
| MCHX | Trinity Rail Management Incorporated | |
| MCIX | SSI Mobley Company Incorporated (M of W) | |
| MCLR | McLaughlin Line Railroad | |
| MCMU | Management Control and Maintenance S.A. | |
| MCPX | Solutia Incorporated | |
| MCR | McCloud Railway Company | |
| MCRR | Monongahela Connecting RR Company | |
| MCRX | Marcus Rail Transport LLC | |
| MCSA | Moscow Camden and San Augustine Railroad | |
| MCSU | China Ocean Shipping Company | |
| MCTA | Minnesota Central Railroad Company | |
| MCTX | Modern Continental Construction | |
| MCVX | Massuchusetts Call/Volunteer Firefighters Assoc. | |
| MDCX | Mexicana De Cobre S.A. De C.V. | |
| MDDE | Maryland and Delaware Railroad | |
| MDDX | Old Line Holdings Company Incorporated | |
| MDIX | Modern Dispersions Incorporated | |
| MDKX | Mandak Metal Processors Division of Gardau MRM Steel Incorporated | |
| MDLR | Midland Terminal Company | |
| MDR | Kansas City Southern Railway Company (MidSouth) | |
| MDSZ | Medspan Shipping Service Incorporated | |
| MDTX | Southern Region Industrial Realty Incorporated | |
| MDW | Minnesota Dakota and Western Railway Company | |
| MDWU | Minnesota Dakota and Western Railway Company | |
| MDWZ | Minnesota Dakota and Western Railway Company | |
| ME | Morristown and Erie Railway Incorporated | |
| MEC | Maine Central Railroad Company (Guilford Rail System) | |
| MECX | Trinity Rail Management Incorporated | |
| MELX | Sunbelt Cement Incorporated | |
| MEPX | McGraw-Edison Company | |
| MERX | Merco A Joint Venture | |
| MESX | Mears/CPG Incorporated | |
| MET | Modesto and Empire Traction Company | |
| METW | Municipality of East Troy Wisc. | |
| METX | Northeast Illinois Regional Commuter Railroad Corporation | |
| MFCX | First Union Rail | |
| MFFX | M4 Holdings Limited | |
| MGA | Norfolk Southern Railway Company | |
| MGGU | Marcevaggi S.P.A. | |
| MGMX | J and J Partnership | |
| MGRI | MG Rail Incorporated | |
| MGSX | Martin Gas Sales Incorporated | |
| MH | Mt. Hood Railroad Company | |
| MHAX | US Dept of Interior-Bureau of Mines Helium Field Operations | |
| MHFX | MHF Logistical Solutions Incorporated | |
| MHQU | Military Sealift Command HQ Washington DC | |
| MHQZ | Military Sealift Command | |
| MHRX | Mile-High Railcar Services Incorporated | |
| MHWA | Mohawk Adirondack and Northern Railroad Corporation | |
| MI | Union Pacific Railroad Company | |
| MIDH | Middletown and Hummelstown RR Company | |
| MIDX | MRC Rail Services LLP | |
| MIEU | MI Engineering Ltd | |
| MILW | Soo Line Railroad Company (Milwaukee Road) | |
| MILX | General Electric Rail Services Corporation | |
| MILZ | Soo Line Railroad Company | |
| MIMX | Minera Mexico Internacional Incorporated | |
| MINU | China Ocean Shipping Company | |
| MIPX | Millenium Petrochemicals Incorporated | |
| MIRX | Regional Recycling LLC | |
| MIS | Mississippi Central Railroad Corporation | |
| MISS | Mississippian Railway Cooperative Incorporated | |
| MISU | Malaysian International Shipping Corporation | |
| MISX | Milwaukee Solvents and Chemicals Corporation | |
| MJ | Manufacturers' Junction Railway Company | |
| MJVU | Merco A Joint Venture | |
| MKC | McKeesport Connecting Railroad Company | |
| MKCX | Morrison Knudsen Corporation | |
| MKIX | Morrison Knudsen Corporation | |
| MKT | Union Pacific Railroad Company (Missouri, Kansas & Texas) | |
| MKTT | Union Pacific Railroad Company | |
| MKTZ | Missouri Pacific Railroad Company | |
| MLCU | N.Y.K. Line | |
| MLCX | American Refrigerator Transit Company | |
| MLEX | Miles Incorporated | |
| MLLX | Montell USA Incorporated | |
| MLSX | Monsanto Company | |
| MLUX | Solutia Incorporated | |
| MMAX | Martin Marietta Corporation | |
| MMBX | Master Builders Incorporated | |
| MMCU | CIE Des Messageries Maritimes | |
| MMCX | TransMatrix Incorporated | |
| MMID | Maryland Midland Railway Incorporated | |
| MMMU | Fesco Pacific Lines | |
| MMMX | Minnesota Mining and Manufacturing (d/b/a 3M) | |
| MMRR | Mid-Michigan Railroad Incorporated | |
| MMRX | Double M Ranch Enterprises | |
| MMXZ | Murphy Motor Express Inc | |
| MNA | Missouri and Northern Arkansas Railroad Company | |
| MNAX | C and S Directional Boring Incorporated | |
| MNBR | M and B Railroad LLC | |
| MNCW | Metro-North Commuter Railroad | |
| MNCX | Minnesota Corn Processors Incorporated | |
| MNJ | Middletown and New Jersey Railway Company Incorporated | |
| MNLU | Malaysian International Shipping Corporation | |
| MNLX | Mobil Oil Corporation | |
| MNN | Minnesota Northern Railroad Incorporated | |
| MNNR | Minnesota Commercial Railway Company | |
| MNPX | Morton International Incorporated | |
| MNS | Soo Line Railroad Company (Minneapolis, Northfield & Southern) | |
| MNWX | Minnesota Dept. of Public Service Weights and Measures Division | |
| MOBX | Mobil Oil Corporation | |
| MOC | Missouri Central Railroad Company | |
| MOFX | Maxton Oil and Fertilizer Company | |
| MOGX | C.W. Brooks Incorporated | |
| MOHX | Solutia Incorporated | |
| MOLU | Mitsui O.S.K. Lines Limited | |
| MOLX | Internation Molasses Corporation Limited | |
| MON | CSX Transportation Incorporated (Monon) | |
| MONX | Solutia Incorporated | |
| MORZ | Mitsui O.S.K. Lines Limited | |
| MOSX | Mosinee Paper Corporation | |
| MOSZ | Mitsui O.S.K. Lines Limited | |
| MOT | Marine Oil Transportation | |
| MOTC | Montreal Tramways | |
| MOTU | Monsanto | |
| MOTX | Museum of Transportation | |
| MOTZ | Mitsui O.S.K. Lines Limited | |
| MP | Union Pacific Railroad Company (Missouri Pacific) | |
| MPA | Maryland and Pennsylvania Railroad | |
| MPCX | Michels Pipeline Construction Incorporated | |
| MPEX | Motivepower Industries Incorporated | |
| MPIT | Union Pacific Railroad Company (Missouri Pacific) | |
| MPIX | Motive Power Incorporated | |
| MPLZ | Union Pacific Railroad Company | |
| MPSX | Missouri Public Service | |
| MPTX | Procor Limited | |
| MPU | Missouri Pacific Railroad | |
| MPWX | Muscatine Power and Water | |
| MPZ | Union Pacific Railroad Company | |
| MR | McCloud Railway Company | |
| MRCX | General Electric Rail Services Corporation | |
| MRDX | MidAmerican Energy Company | |
| MREX | Monad Railway Equipment Company | |
| MRL | Montana RailLink Incorporated | |
| MRR | Carolina Southern Railroad Company | |
| MRS | Manufacturers Railway Company | |
| MRSX | Mile-High Railcar Services Incorporated | |
| MS | Michigan Shore Railroad Incorporated | |
| MSAZ | National Motor Freight Traffic Assn | |
| MSCI | Mississippi Central Railroad Company | |
| MSCU | Mediterranean Shipping Company S.A. | |
| MSCZ | Mediterranean Shipping Company | |
| MSDR | Mississippi Delta Railroad | |
| MSE | Mississippi Export Railroad Company | |
| MSIX | Morton International Incorporated | |
| MSO | Michigan Southern Railroad Incorporated | |
| MSPX | P4 Productions LLC | |
| MSQU | Military Sealift Command Bayonne NJ | |
| MSRC | Kansas City Southern Railway Company (MidSouth Rail Corp.) | |
| MSRW | Mississippian Railway Cooperative Incorporated | |
| MSTL | Union Pacific Railroad Company (Minneapolis & St. Louis) | |
| MSTR | Massena Terminal Railroad Company | |
| MSUU | USPCI Incorporated | |
| MSV | Mississippi and Skuna Valley Railroad Company | |
| MT | Mississippi and Tennessee RailNet Incorporated | |
| MTAX | MTAX Corporation | |
| MTCO | Macon Terminal Company | |
| MTCX | Mallard Transportation Company | |
| MTCZ | Mayflower Transit and Storage | |
| MTIU | Welfit Oddy (PTY) Limited | |
| MTIZ | American Marine Industries | |
| MTLU | Montgomery Tank Lines | |
| MTMU | March Ltd | |
| MTNX | Rocky Mountain Transportation Services | |
| MTPX | Montana Power Company | |
| MTR | Youngstown and Southern Railway Company | |
| MTRX | TransMatrix Incorporated | |
| MTSU | Marine Transport Service Inc | |
| MTTX | TTX Company | |
| MTZ | Mitsui O.S.K. Lines Limited | |
| MUSC | Memphis Union Station Company | |
| MVRY | Mahoning Valley Railway Company | |
| MVT | Mt. Vernon Terminal | |
| MWAX | Martin Marietta Materials Incorporated | |
| MWCL | Midwest Coal Handling Incorporated | |
| MWCX | Midwest Railcar Corporation | |
| MWHX | Markwest Hydrocarbon Partners Limited | |
| MWLX | Minnesota Mining and Manufacturing (3M) Company | |
| MWLZ | Madrigal-Wan Hai Lines Corporation | |
| MWMX | Golden Leasing | |
| MWRC | Mount Washington Railway Company | |
| MWRL | Hillvista Investment Company d/b/a Molalla Western Railway | |
| MWRR | Montana Western Railway Company Incorporated | |
| MWRX | Midwest Rail Holdings Incorporated | |
| MWSX | General Electric Rail Services Corporation | |
| MXLU | Mexican Line | |
| MZIZ | Marko B Zanovich | |
| NABU | Ecst Container Services and Trading GMBH. | |
| NACR | Nashville and Ashland City Railroad | |
| NACX | General Electric Rail Services Corporation | |
| NADU | North American Domestic Container Corporation | |
| NADX | General Electric Rail Services Corporation | |
| NADZ | North American Domestic Container Corporation | |
| NAFX | General Electric Rail Services Corporation | |
| NAHX | General Electric Rail Services Corporation | |
| NALU | Norwegian American Lines | |
| NALZ | Neptune Orient Lines Limited | |
| NAMX | NAMX Leasing Company | |
| NAP | Narragansett Pier Railroad Company | |
| NAPX | North American Plastics Incorporated | |
| NAR | Canadian National Railway | |
| NARX | NORCHEM Incorporated | |
| NATU | Nasso SA | |
| NATX | General Electric Rail Services Corporation | |
| NATZ | North American Transportation | |
| NAUG | Naugatuck Railroad Company | |
| NAVE | Navajo Express Incorporated | |
| NBEC | New Brunswick East Coast Railway Company Incorporated | |
| NBER | Nittany and Bald Eagle Railroad Company | |
| NBIX | Bombardier Capital Rail Incorporated | |
| NBNR | Nicolet Badger Northern Railroad | |
| NBSR | New Brunswick Southern Railway Company Limited | |
| NC | CSX Transportation Incorporated | |
| NCAU | Colonial/Atl (Bermuda) Limited | |
| NCAZ | NCA Leasing Company/Division G.H. Leasing Corporation | |
| NCBU | Northbrook Container Leasing | |
| NCDU | Burlington Northern | |
| NCEU | XTRA Intermodal | |
| NCFX | General Electric Rail Services Corporation | |
| NCGU | Genstar Corporation | |
| NCHX | General Electric Rail Services Corporation | |
| NCIU | North American Container System (TRAC Lease Incorporated) | |
| NCIX | Nova Chemicals Incorporated | |
| NCLU | China Ocean Shipping Company | |
| NCLX | Nova Chemicals Incorporated | |
| NCPR | North Carolina Ports Railway Commission | |
| NCQU | TIP Intermodal Services | |
| NCRC | Nebraska Central Railroad Company | |
| NCRU | North American Container System (Transamerica Leasing) | |
| NCRX | General Electric Rail Services Corporation | |
| NCRY | Northern Central Railway | |
| NCSX | NOVA Chemicals (USA) Incorporated | |
| NCTU | Northbrook Container Leasing | |
| NCTX | PLM International Incorporated | |
| NCUU | TIP Intermodal Services | |
| NCUX | Newcourt Capital USA Incorporated | |
| NCVA | North Carolina and Virginia Railroad | |
| NCWX | Northwest Container Services Incorporated | |
| NCYR | Nash County Railroad Corporation | |
| NDCR | N.D.C. Railroad Company | |
| NDM | Ferrocarriles Nacionales de Mexico | |
| NDMZ | National Railways of Mexico (Ferrocarriles Nacionales) | |
| NDYX | First Union Rail | |
| NEAX | Nemic Leasing Corporation | |
| NECR | New England Central Railroad Incorporated | |
| NECX | Mid-Am Equipment Incorporated | |
| NEFX | Northeast Corridor Foundation | |
| NEGS | New England Southern Railroad Company | |
| NEKM | Northeast Kansas and Missouri Division Mid-Michigan Railroad Incorporated | |
| NELU | New England Express Lines | |
| NEMX | Ogden Martin Systems of Montgomery | |
| NENE | Nebraska Northeastern Railway Company | |
| NEPU | Neptune Orient Lines Limited | |
| NERR | Nashville and Eastern Railroad | |
| NERX | Transportation Management Services Incorporated | |
| NERZ | General Electric Capital Corporation | |
| NESX | Nestle Brands FoodService Company Division of Nestle Food Company | |
| NETU | Netumar Lines | |
| NETX | Nemic Leasing Corporation | |
| NFPX | Newaygo Forest Products Limited | |
| NGOU | Scoa Incorporated | |
| NGTX | Suburban Propane L.P. | |
| NHCR | New Hampshire Central Railroad | |
| NHN | New Hampshire Northcoast Corporation | |
| NHRR | New Hope and Ivyland Rail Road | |
| NHVT | New Hampshire and Vermont Railroad Company | |
| NICD | Northern-Indiana Commuter Transportation District | |
| NICU | NIC Leasing Incorporated | |
| NIFX | General Electric Rail Services Corporation | |
| NIHX | General Electric Rail Services Corporation | |
| NIKX | N.I.K. Non-stock Marketing Cooperative | |
| NIRX | General Electric Rail Services Corporation | |
| NJ | Delaware and Hudson Railway Company Incorporated | |
| NJTR | NJ Transit Rail Operations | |
| NKCR | Nebraska Kansas and Colorado RailNet Incorporated | |
| NKP | Norfolk Southern Railway Company (Nickel Plate) | |
| NLAX | National Aeronautics and Space Administration (NASA) | |
| NLG | Kansas City Southern Railway Company (North Louisiana & Gulf) | |
| NLLX | Northern Line Layers Incorporated | |
| NLPX | Perkins Motor Transport Incorporated | |
| NLSU | Nautilus Leasing Services Incorporated | |
| NLSX | National Starch and Chemical Company | |
| NLSZ | Trans Ocean Chassis Corporation | |
| NLTX | National Starch and Chemical Company d/b/a Speciality Synthetic Polymers Division | |
| NMCX | National Machinery Company | |
| NMLX | National Metal Corporation Limited | |
| NMMX | National Machinery Company - Michigan | |
| NN | Northern Nevada Railroad Corporation | |
| NNIU | Nautica Line | |
| NNPU | Nigerian National Petroleum Corporation | |
| NNSX | Newport News Shipbuilding and Dry Dock Company | |
| NOFU | Nodfos | |
| NOKL | Northwestern Oklahoma Railroad Co | |
| NOKZ | First Union Rail | |
| NOLR | New Orleans Lower Coast Railroad Incorporated | |
| NOLU | Neptune Orient Lines Limited | |
| NOLZ | Neptune Orient Lines Limited | |
| NOPB | New Orleans Public Belt Railroad | |
| NORX | Northern Indiana Public Service Company | |
| NOSU | Neptune Orient Lines Limited | |
| NOT | New Orleans Terminal | |
| NOW | Northern Ohio and Western Railway Limited | |
| NP | Burlington Northern and Santa Fe Railway Company (Northern Pacific) | |
| NPB | Norfolk and Portsmouth Belt Line Railroad Company | |
| NPCX | Equistar Chemicals LP | |
| NPIX | Chem-Nuclear Systems LLC | |
| NPPX | Nebraska Public Power District | |
| NPR | Northern Plains Railroad Incorporated | |
| NPRX | Yakima Interurban Lines Assn. | |
| NPSU | Nigel Parks Limited | |
| NPT | Portland Terminal R.R. Company (Oregon) | |
| NPTU | Neptune Leasing Incorporated | |
| NPTX | Newport Steel Corporation | |
| NRBX | Fruit Growers Express Company | |
| NRCU | Nedlloyd Road Cargo B.V. | |
| NRCX | Northern Rail Car Corporation | |
| NRDX | Nordic Warehouse Incorporated | |
| NREX | National Railway Equipment Company | |
| NRHX | National Railway Historical Society | |
| NRI | Nebkota Railway Incorporated | |
| NRIX | National Refrigerants Incorporated | |
| NRLX | Bombardier Capital Rail Incorporated | |
| NRPX | Northrop Corporation | |
| NRR | Nobles Rock Railroad | |
| NRSU | Nippon Riku-un Sangyo Company | |
| NS | Norfolk Southern Railway Company | |
| NSAX | National Steel Corporation | |
| NSCU | Norfolk Southern Railway Company | |
| NSCX | National Steel Car Limited | |
| NSFZ | Norfolk Southern Railway Company | |
| NSHR | North Shore Railroad Company | |
| NSL | St. Lawrence and Raquette River Railroad | |
| NSLU | Norasia Serviceslway Company | |
| NSLZ | Nestle Transportation Company | |
| NSPX | Northern States Power Company (Minn.) | |
| NSPZ | Norfolk Southern Railway Company | |
| NSR | Newburgh and South Shore Railroad Company | |
| NSSX | National Salvage and Service Corporation | |
| NSTX | North Star Steel Company | |
| NSXZ | Norfolk Southern Railway Company | |
| NSZ | Norfolk Southern Railway Company | |
| NTIU | Germanischer Lloyd | |
| NTKX | VAE Nortrak North America Incorporated | |
| NTLX | Nashtex Leasing Incorporated | |
| NTNU | National Container Network Incorporated | |
| NTR | Mississippi Central Railroad Company | |
| NTRY | Nimishillen and Tuscarawas Railway Company | |
| NTSX | Northeast Transportation Service | |
| NTTX | TTX Company | |
| NUCX | Nucor Steel Crawfordsville - Division of Nucor Corporation | |
| NUSU | Neptune Orient Lines Limited | |
| NVCX | Nevada Cement Company | |
| NVPX | Nevada Power Company | |
| NVR | Northern Vermont Railroad | |
| NVRR | NAPA Valley Railroad Company | |
| NW | Norfolk Southern Railway Company (Norfolk & Western) | |
| NWAX | National Wax Company | |
| NWCX | Northwest Container Services Incorporated | |
| NWGX | Gorham's Incorporated | |
| NWP | Northwestern Pacific Railroad Company | |
| NWTX | North West Timber Limited | |
| NWTZ | NW Transport | |
| NWX | General Electric Rail Services Corporation | |
| NWZ | Norfolk Southern Railway Company | |
| NXLZ | National Xpress Logistics Incorporated | |
| NYA | New York and Atlantic Railway Company | |
| NYAU | N.Y.K. Line | |
| NYBU | N.Y.K. Line | |
| NYC | CSX Transportation Incorporated (New York Central) | |
| NYCH | New York Cross Harbor Railroad Terminal Corporation | |
| NYCX | New York Central Lines LLC | |
| NYGL | New York and Greenwood Lake Railway | |
| NYKU | N.Y.K. Line | |
| NYKZ | N.Y.K. Line | |
| NYLE | New York and Lake Erie Railroad Company | |
| NYLU | Japan Line Limited | |
| NYOG | New York and Ogdensburg Railway Company Incorporated | |
| NYSW | New York Susquehanna and Western Railway Corporation | |
| NZCU | Shipping Corporation Of New Zealand Ltd | |
| NZSU | Shipping Corporation Of New Zealand Ltd | |
| OAR | Old Augusta Railroad Company | |
| OCCU | ATS Container Leasing S.A. | |
| OCCX | Occidental Chemical Corporation | |
| OCFX | Owens Corning Fiberglass | |
| OCLU | Overseas Containers Limited | |
| OCNU | Ocean Lines Incorporated | |
| OCPX | Oxy Vinyls LP | |
| OCR | Oklahoma Central Railroad Company | |
| OCSU | Scripps Institute of Oceanography | |
| OCTL | Oil Creek and Titusville Lines | |
| OCTR | Octoraro Railway Incorporated | |
| OCTX | Octel America Incorporated | |
| ODTX | Oil-Dri Corporation of America | |
| OFCX | RESIDCO | |
| OFOX | RESIDCO | |
| OFSX | Tucson Electric Power Company | |
| OGEE | Ogeechee Railway Company | |
| OGEX | Oklahoma Gas and Electric Company | |
| OGSX | IES Utilities Incorporated | |
| OHCR | Ohio Central Railroad Incorporated | |
| OHFX | Fluor Daniel Fernald | |
| OHIC | Ohi-Rail Corporation | |
| OHKU | Ohka American Incorporated USA | |
| OHOX | US Department of Energy Ohio Field | |
| OHPA | Ohio and Pennsylvania Railroad Company | |
| OHRY | Owego and Harford Railway Incorporated | |
| OJGX | Oscar J. Glover | |
| OKAN | Okanagan Valley Railway Company | |
| OKCX | Lone Star Industries Incorporated | |
| OKKT | Union Pacific Railway Company | |
| OLAU | Occidental Chemical Corporation Echem and Speciality Products | |
| OLB | Omaha Lincoln and Beatrice Railway Company | |
| OLDX | Old Line Holding Company Incorporated | |
| OLLU | Ocean Leasing Limited | |
| OLNX | Olin Corporation | |
| OLO | Ontario L'Orignal Railway Incorporated | |
| OLYR | Olympic Railroad Company | |
| OLYU | Olympic Container Corporation | |
| OLYZ | Showa Line Limited | |
| OMAX | Omaha Public Power District | |
| OMID | Ontario Midland Railroad Corporation | |
| OMLX | OmniTRAX Leasing Limited | |
| ONCT | Ontario Central Railroad Corporation | |
| ONSX | Oglebay Norton Industrial Sands Incorporated | |
| ONT | Ontario Northland Railway | |
| ONTA | Ontario Northland Railway | |
| ONTX | On-Track Railcar Services Incorporated | |
| OOCZ | Orient Overseas Line Incorporated | |
| OOLU | Orient Overseas Container Line Incorporated | |
| OOOX | Osborne Incorporated | |
| OOUU | Orient Overseas Line Incorporated | |
| OPE | Oregon Pacific and Eastern Railway Company | |
| OPIX | Equistar Chemicals LP | |
| OPPX | Omaha Public Power District | |
| OPR | Oregon Pacific Railroad Company | |
| OPSU | EMP | |
| OPSX | Public Service Company of Oklahoma | |
| OPT | Orange Port Terminal Railway | |
| OPX | Ohio Power Company | |
| ORA | Ormet Railroad Corporation | |
| ORCU | BSL Transport | |
| OREX | Oregon Department of Agriculture | |
| OROX | U.S. Dept. of Energy Oak Ridge Operations | |
| ORR | Osage Railroad | |
| OSCZ | Intermodal Services Incorporated | |
| OSRR | Ohio Southern Railroad Incorporated | |
| OSRX | Ontario Southland Railway Incorporated | |
| OSSU | Eurovos B.V. | |
| OTCO | Owensville Terminal Company | |
| OTDX | Greenbrier Leasing Corporation | |
| OTR | Oakland Terminal Railway | |
| OTRX | On-Track Railway Services Limited | |
| OTT | Ottumwa Terminal Railroad Company | |
| OTTX | TTX Company | |
| OTVR | Otter Tail Valley Railroad Company | |
| OUCH | Ouachita Railroad | |
| OUCX | Orlando Utilities Commission (Fla.) | |
| OURD | Ogden Union Railway and Depot Company | |
| OVEX | Ohio Valley Electric Company | |
| OVNZ | Overnite Transportation Company | |
| OWLU | Ocean World Lines Incorporated | |
| OWSX | Oil Well Supply Co (1980) Limited | |
| OXYU | Eurotainer U.S. Inc | |
| PACX | Plasser American Corporation | |
| PAE | Norfolk Southern Railway Company | |
| PAIX | Poly-America Inc | |
| PAL | Paducah and Louisville Railroad | |
| PAM | Pittsburgh Allegheny and McKees Rocks Railroad Company | |
| PAPX | Pennsylvania Pullmans Incorporated | |
| PARX | Pan American Railway Company | |
| PASX | Pacer International Incorporated dba Pacer Stacktrain | |
| PATZ | Pacer Stacktrain | |
| PBFX | IBP Incorporated | |
| PBL | Philadelphia Belt Line Railroad Company | |
| PBLU | Containers and Pressure Vessels Ltd | |
| PBLX | MHC Incorporated Wholly Owned Sub. of Con Agra Incorporated | |
| PBNE | Philadelphia Bethlehem and New England Railroad Company | |
| PBR | Patapsco and Back Rivers Railroad | |
| PBRR | Pine Belt Southern Railroad Company | |
| PBSZ | CSX Intermodal Incorporated | |
| PBVR | Port Bienville Railroad | |
| PC | Norfolk Southern Railway Company (Penn Central) | |
| PCAX | Pioneer Chlor Alkali Company Incorporated | |
| PCC | Palouse River and Coulee City Railroad Incorporated | |
| PCCX | Peabody Coal Company (Captive Service) | |
| PCHX | Poole Chemical Incorporated | |
| PCIX | ACF Industries Incorporated | |
| PCJU | Puma Containers (Jersey) Limited | |
| PCLU | Maritime Container Lines Limited | |
| PCN | Point Comfort and Northern Railway | |
| PCRX | Pacer Rail Services L.L.C | |
| PCSX | PLM International Incorporated | |
| PCTX | Pioneer Cement Company of Texas | |
| PCY | Pittsburgh Chartiers and Youghiogheny Railway Company | |
| PDIZ | Produce Distributors Incorporated | |
| PDQX | Castle Capital Corporation | |
| PDRR | Pee Dee River Railroad Corporation | |
| PE | Consolidated Rail Corporation | |
| PECX | General Electric Rail Services Corporation | |
| PELX | Premier Equipment Leasing Company | |
| PELZ | Premier Equipment Leasing Incorporated | |
| PENX | Penford Products Company | |
| PEPX | Potomac Electric Power Company | |
| PERU | Maxu Containers Limited | |
| PF | Pioneer and Fayette Railroad Company | |
| PFMX | Perdue Transportation Incorporated | |
| PFRX | Parks Propane and Appliance Incorporated | |
| PGCX | Peoples Gas System Incorporated | |
| PGDX | General Electric Rail Services Corporation | |
| PGE | BC Rail Limited | |
| PGEX | Portland General Electric Company | |
| PGHX | Trinity Rail Management Incorporated | |
| PGLZ | Prudential Grace Lines | |
| PGRV | Pigeon River Railroad Company | |
| PGRX | AmeriGas Propane L.P. | |
| PGTX | Trinity Rail Management Incorporated | |
| PHD | Port Huron and Detroit Railroad Company | |
| PHL | Pacific Harbour Line Incorporated | |
| PHRU | Nigeria National Petroleum Corporation | |
| PI | Paducah and Illinois Railroad | |
| PICK | Pickens Railway Company | |
| PICU | Pickfords Removals Ltd | |
| PIFX | Pifer Tank Car Company | |
| PIGZ | Tranfax-Division of Fresh Intermodal Transport Incorporated | |
| PIR | Pittsburgh Industrial Railroad Incorporated | |
| PJR | Port Jersey | |
| PJRL | Penn Jersey Rail Lines Incorporated | |
| PKHP | Pickens Railway Co-Honea Path Division | |
| PLCX | General Electric Rail Services Corporation | |
| PLE | Youngstown and Southern Railway Company | |
| PLEX | PLM International Incorporated | |
| PLIX | Polymont Plastics Corporation | |
| PLIZ | P and L Intermodal Corporation | |
| PLLU | Polynesia Line Limited | |
| PLLZ | Polynesia Line Limited | |
| PLMX | PLM International Incorporated | |
| PLNZ | Penske Logistics | |
| PLRU | Pic Leasing Corporation | |
| PLRX | PIC Trans Incorporated | |
| PLUX | Pulser Equipment Corporation | |
| PLW | PL and W Railroad Incorporated | |
| PLWX | General Electric Rail Services Corporation | |
| PMAX | PMA Transportation Corporation | |
| PMGX | Pacific Metal Limited | |
| PMIX | Pittman Moore Incorporated | |
| PMLX | Prairie Malt Limited | |
| PMOX | Phillip Morris Incorporated | |
| PNHX | GATX Capital Corporation | |
| PNR | Panhandle Northern Railroad Company | |
| PNS | Philadelphia and Norfolk Steamship | |
| PNSX | Chem-Nuclear Systems LLC | |
| PNTX | Great Lakes Chemical Corporation Speciality Chemicals | |
| PNW | Prescott and Northwestern Railroad | |
| PNWR | Portland and Western Railroad Incorporated | |
| PNWU | Pacific Northwest Equipment Incorporated | |
| POAK | Port of Oakland Railway | |
| POLU | Polish Ocean LinesGyndia American Lines | |
| POLZ | Polish Ocean Lines | |
| POTB | Port of Tillamook Bay Railroad | |
| POTX | General American Marks | |
| POV | Pittsburgh and Ohio Valley Railway | |
| POVA | Pend Oreille Valley Railroad | |
| POWX | Power Silicates Incorporated | |
| PPAX | PCS Phosphate Company Incorporated | |
| PPCX | American Association of Private Railroad Car Owners | |
| PPGX | PPG Industries Incorporated | |
| PPHX | PCS Phosphate Company | |
| PPLX | Pennsylvania Power and Light Company | |
| PPNX | PCS Phosphate Company | |
| PPSX | Pioneer Pipe and Supply Company Incorporated | |
| PPTX | PCS Phosphate Company | |
| PPU | Peoria and Pekin Union Railway Company | |
| PPU | Peoria and Pekin Union Railway Company | |
| PQCX | PQ Corp | |
| PQX | PQ Corporation | |
| PRAX | First Union Rail | |
| PRBX | Trinity Rail Management Incorporated | |
| PRCX | Prairie Coal Limited | |
| PRDX | Pacific Rail Dismantling Services Incorporated | |
| PREU | Prime Incorporated | |
| PREX | Pioneer Railroad Equipment Company | |
| PREZ | Prime Incorporated | |
| PRGX | Cargill Incorporated | |
| PRI | Port Railroads Incorporated | |
| PRL | Penn Eastern Rail Lines Incorporated | |
| PRLX | Private Rail Limited | |
| PRMU | Puerto Rican Maritime Shipping Authority | |
| PRMZ | Puerto Rican Maritime Shipping Authority | |
| PROX | Procor Limited | |
| PRR | Norfolk Southern Railway Company (Pennsylvania Railroad) | |
| PRSL | Pennsylvania Lines LLC | |
| PRSX | Progress Rail Services Corporation | |
| PRT | Parr Terminal Railroad | |
| PRTD | Portland Traction Company | |
| PRV | Pearl River Valley Railroad Company | |
| PRY | Pioneer Industrial Railway Company | |
| PRYL | Port Royal Railroad | |
| PS | Pittsburg and Shawmut Railroad Company | |
| PSAP | Puget Sound and Pacific Railroad Company | |
| PSAZ | Pacific Northwest Perishable ShippersAssoc. | |
| PSBU | Contship | |
| PSCX | Public Service Company of Colorado | |
| PSFL | Puget Sound Freight Lines | |
| PSFZ | Flexi-Van Leasing | |
| PSIX | PSI Energy Incorporated (Ind.) | |
| PSLL | Plymouth Short Line Limited | |
| PSNU | Pacific Steam Navigation Company | |
| PSOX | Puget Sound Power and Light Company | |
| PSPX | Phillips Petroleum Company | |
| PSR | Pittsburg and Shawmut Railroad Incorporated | |
| PSTX | David J. Joseph Company | |
| PT | Peninsula Terminal Company | |
| PTC | Plainview Terminal Company | |
| PTDX | ABB Power T and D Company Incorporated | |
| PTEX | General Electric Rail Services Corporation | |
| PTIZ | Parkway Transport Incorporated | |
| PTLX | General Electric Rail Services Corporation | |
| PTM | ST Rail System | |
| PTOX | PTO Incorporated | |
| PTR | Port Terminal Railroad of South Carolina | |
| PTRC | Portland Terminal Railroad Company (Oregon) | |
| PTRR | Port Townsend Railroad Incorporated | |
| PTRU | South American Petrolite De Venezuela | |
| PTRX | Petrolite Corporation | |
| PTRX | Petrolite Corporation | |
| PTSX | Petrosol International Incorporated | |
| PTTX | TTX Company | |
| PTXX | PTS Incorporated | |
| PUBX | Publicker Industries Incorporated | |
| PUCC | Port Utilities Commission of Charleston South Carolina | |
| PVCX | BHP Cooper Incorporated | |
| PVFX | General Electric Rail Services Corporation | |
| PVGX | General Electric Rail Services Corporation | |
| PVRR | Pioneer Valley Railroad Company Incorporated | |
| PVRX | Pook Valley Rail System | |
| PVS | Pecos Valley Southern Railway Company | |
| PW | Providence and Worcester Railroad | |
| PWCX | Inland Cement Limited | |
| PWRX | Pacific Western Resin Company | |
| PWRZ | Providence and Worcester Railroad Company | |
| PWV | Norfolk Southern Railway Company (Pittsburgh & West Virginia) | |
| PXCU | Phoenix Container Liners Limited | |
| PXCZ | Phoenix Container Liners Limited | |
| QBT | Quincy Bay Terminal Company | |
| QC | Canadian Pacific Railway (Quebec Central) | |
| QCCX | Equistar Chemicals LP | |
| QFFX | Quimica Fluor S.A. de C.V. | |
| QGRY | Quebec Gatineau Railway Incorporated | |
| QOCX | Quaker Oats Company | |
| QOHX | Quaker Oats Company | |
| QOPX | General Electric Rail Services Corporation | |
| QOTX | Great Lakes Chemical Corporation Speciality Chemicals | |
| QPCX | General Electric Rail Services Corporation | |
| QRC | Quebec Railway Corporation Incorporated | |
| QRR | Quincy Railroad Company | |
| QRSX | Quality Railway Services and Supply Company | |
| QSMX | Quaker State Corporation | |
| QSR | Quebec Southern Railway | |
| QTTX | TTX Company | |
| RACX | General Electric Rail Services Corporation | |
| RAHX | Rohm and Haas Company | |
| RAIX | Union Carbide Corporation | |
| RAPX | Rapco Transportation Company | |
| RARW | Rarus Railway Company | |
| RASX | C.A. Rasmussen | |
| RAWX | Platte River Power Authority | |
| RAX | RPI-AAR Cooperative Test Program | |
| RBBX | Ringling Bros. and Barnum and Bailey | |
| RBCU | Railbridge Corporation | |
| RBCX | Rail-Bridge Corporation | |
| RBLX | Brent C. Lewis | |
| RBMN | Reading Blue Mountain and Northern Railroad Company | |
| RBOX | Railbox Company | |
| RCIZ | Radich Construction Company | |
| RCMX | Services Unlimited | |
| RCOX | Arco Products Company Division of Atlantic Richfield Company | |
| RCPX | Railcar Limited | |
| RCRR | Red Coat Road and Rail Limited | |
| RCRX | Reagent Chemical and Research Incorporated | |
| RCSZ | Rail Container Services Incorporated | |
| RCWZ | Union Pacific Railroad Company | |
| RDCX | Regional Disposal Company | |
| RDG | Norfolk Southern Railway Company (Reading) | |
| RDIX | Rapid Industrial Plastics Company | |
| RDMZ | Transamerica Leasing Incorporated | |
| RDSZ | CSX Transportation Incorporated | |
| RDWZ | Roadway Express Incorporated | |
| REAU | Transamerica Leasing Incorporated | |
| REAZ | Transamerica Leasing Incorporated | |
| RECX | Central Louisiana Electric Company | |
| REDX | Miron/USA Limited | |
| REDZ | REDON Incorporated | |
| RELX | Relco Tank Line Incorporated | |
| RESX | Rescar Incorporated | |
| RFMX | Caldwell-Baker Company | |
| RFP | CSX Transportation Incorporated (Richmond, Fredericksburg & Potomac) | |
| RFPU | CSX Transportation Incorporated | |
| RFPZ | CSX Transportation Incorporated | |
| RFRX | Rick Franklin Corporation | |
| RGCX | Rio Grande Chemical Sales Company | |
| RGEX | Royal Gorge Industries LLC | |
| RGIX | Republic Gas and Utilities Corporation | |
| RGRX | Rio Grande Railcar Company Incorporated | |
| RGTU | Denver and Rio Grande Western Railroad Company | |
| RGTX | Residco | |
| RGTZ | Union Pacific Railroad Company | |
| RGWZ | Transamerica Leasing Incorporated | |
| RHRX | Rahr Malting Company | |
| RICU | Rinnen GMBH and CO KG Internationale Spedition | |
| RICX | Rockwell International Corporation | |
| RIIX | Reilly Industries Incorporated | |
| RILX | Garvey International Incorporated Garvey Grain Division | |
| RIMX | Ready Mixed Concrete Company | |
| RJCL | R.J. Corman Railroad Company/ Cleveland line | |
| RJCM | R.J. Corman Railroad Company/ Memphis Line | |
| RJCN | R.J. Corman Railroad Company/ Allentown Lines Incorporated | |
| RJCP | R.J. Corman Railroad Company/ Pennsylvania Lines Incorporated | |
| RJCR | R.J. Corman Railroad Corporation | |
| RJCW | R.J. Corman Railroad Company/ Western Ohio Line | |
| RJRX | ACF Industries Incorporated | |
| RKCX | Knox Kershaw Incorporated | |
| RKTZ | Transamerica Leasing | |
| RL | Rutland Line Incorporated | |
| RLGN | RailAmerica Mackenzie Northern Railway | |
| RLHH | RailAmerica Southern Ontario Railway | |
| RLIX | Rail Link Incorporated | |
| RLK | RailAmerica Ottawa Valley Railway | |
| RLMX | David J. Joseph Company | |
| RLTX | Randolph L. Johnston | |
| RMCU | RMC (Trancoleasing) Limited | |
| RMCX | Reynolds Metals Company | |
| RMDX | American Refrigerator Transit Company | |
| RMGX | Railcar Limited | |
| RMIU | Mi Environmental Services | |
| RMIX | Ready Mix Concrete Company | |
| RMLU | Royal Mail Lines Limited | |
| RMMX | Railcar Limited | |
| RMPX | Railcar Limited | |
| RMPZ | Transamerica Leasing | |
| RMRR | Rocky Mountain Railcar and Railroad Incorporated | |
| RMSX | Pandrol Jackson Incorporated | |
| RNDX | ACF Industries Incorporated Amcar Division | |
| ROBZ | Robco Transportation Incorporated | |
| ROCX | Rocky Mountain Transportation Services | |
| ROEZ | Roehl Transport Incorporated | |
| ROIX | Shintech Incorporated | |
| ROLU | Ro-Lo Pacific Line | |
| ROPX | Rail Operators Incorporated | |
| ROYU | Royal Netherlands | |
| RPBX | Rhodia Incorporated | |
| RPIX | Rhone-Poulenc Incorporated | |
| RPMZ | Transamerica Leasing Incorporated | |
| RRBX | Rampart Range Corporation | |
| RRCI | Redmont Railway Company Incorporated | |
| RRCO | Rochelle Railroad Company | |
| RRCX | Radar Railcar Incorporated | |
| RREX | General Electric Rail Services Corporation | |
| RRIU | Triton Containers | |
| RRIX | Rader Railcar II Incorporated | |
| RRRR | Rock and Rail Incorporated | |
| RRRX | Rex Leasing Incorporated | |
| RRVW | Red River Valley and Western Railroad | |
| RS | Roberval and Saguenay Railway Company | |
| RSB | Rochester Subway | |
| RSFZ | Transamerica Leasing Incorporated | |
| RSIZ | Rail Services Incorporated | |
| RSM | Railroad Switching Service of Missouri Incorporated | |
| RSNR | Red Springs and Northern Railroad | |
| RSP | Roscoe Snyder and Pacific Railway | |
| RSPZ | Transamerica Leasing Incorporated (Union Pacific) | |
| RSR | Rochester and Southern Railroad | |
| RSRU | Norfolk Southern Railway Company | |
| RSRZ | Norfolk Southern Railway Company | |
| RSS | Rockdale Sandow and Southern Railroad Company | |
| RSUX | Riley Stoker Corporation | |
| RSWZ | Transamerica Leasing Incorporated | |
| RSYX | Refined Sugars Incorporated | |
| RT | River Terminal Railway Company | |
| RTCX | Union Tank Car Company | |
| RTCZ | Rocor Freight Services | |
| RTEX | Rail Trusts Equipment Incorporated | |
| RTIX | RTI - Railroad Services | |
| RTLX | Relco Tank Line Incorporated | |
| RTMX | General Electric Rail Services Corporation | |
| RTMZ | Transamerica Leasing Incorporated | |
| RTPX | Wheelabrator Coal Services Company | |
| RTRU | Road Trailer Rentals Incorporated | |
| RTRX | Rocky Mountain Transportation Services | |
| RTRZ | Road Trailer Rentals Limited | |
| RTSX | Rail Transportation Services Incorporated | |
| RTTX | TTX Company | |
| RTTZ | Union Pacific Railroad Co | |
| RUDX | Ruddy Tank Car Company | |
| RUSX | First Union Rail | |
| RUT | Vermont Railway Incorporated | |
| RVLZ | Transamerica Leasing | |
| RVSC | Rio Valley Switching Company | |
| RWCX | RWC Incorporated | |
| RWSX | Scherer Electric Generating Facility (Ala.) | |
| RWTX | Railwest US Incorporated | |
| RXXZ | Transamerica Leasing | |
| RYCU | De Rycke Vloeitransport B.V. | |
| SA | Norfolk Southern Railway Company (Savannah & Atlanta) | |
| SAFX | Safety-Kleen Corporation | |
| SAL | CSX Transportation Incorporated (Seaboard Air Line) | |
| SALX | General American Markss Company | |
| SAMU | South African Marine Corporation | |
| SAMX | Cargill Incorporated | |
| SAN | Sandersville Railroad Company | |
| SANU | Samband Islenzkra Samvinnufelag | |
| SANX | San Angelo Tank Car Line | |
| SAPT | Savannah Port Terminal Railroad Incorporated | |
| SATX | City Public Service Board of San Antonio Texas | |
| SAUX | Sauvage Gas Company | |
| SAVX | Savannah Electric and Power Company | |
| SAW | South Plains Switching Limited | |
| SAWU | Swedish Atlantic-Wilshelsen Line | |
| SAWX | Sawyer Gas of Jacksonville Incorporated | |
| SAZX | Saz Transportation Corporation | |
| SB | South Buffalo Railway Company | |
| SBC | Ferrocarriles Nacionales de Mexico | |
| SBD | CSX Transportation Incorporated (Seaboard System) | |
| SBDZ | CSX Transportation Incorporated | |
| SBGU | Marine Transportation Svcs. Sea-Barge Group | |
| SBK | South Brooklyn Railway Company | |
| SBKU | Shinko Pantec Company Incorporated | |
| SBLN | Sterling Belt Line Railway | |
| SBLX | Sunbelt/Chlor/Alkali Partnership | |
| SBRR | Stourbridge Railroad Company | |
| SBVR | South Branch Valley Rail Road | |
| SCBG | Santa Cruz Big Trees and Pacific Railway Company | |
| SCBX | Standbridge Color Corporation | |
| SCEX | Southern California Edison Company | |
| SCFE | South Central Florida Express Incorporated | |
| SCGX | Eades Commodities Company | |
| SCHX | Rhodia Incorporated | |
| SCIU | Sea Containers Incorporated | |
| SCIX | General Electric Rail Services Corporation | |
| SCJX | Chevron Chemical Corporation | |
| SCKX | Northern Coal Transportation Company | |
| SCL | CSX Transportation Incorporated (Seaboard Coast Line) | |
| SCLU | Sea Containers Incorporated | |
| SCLX | CanadianOxy Industrial Chemicals Limited Partnership | |
| SCMX | Shell Oil Company | |
| SCNX | South Carolina Electric and Gas Company | |
| SCNZ | Shipping Corporation Of New Zealand | |
| SCOX | Scoular Company | |
| SCOZ | Crab Orchard and Egyptian Railroad | |
| SCPU | Alnery No. 954 Limited (U.K.) | |
| SCPX | Shell Oil Company | |
| SCRF | South Carolina Central Railroad | |
| SCRX | Santa Clarita Railway d/b/a James Clark and Company | |
| SCST | Seaboard Transportation Company | |
| SCSX | CIT Group/Capital Finance Incorporated | |
| SCT | Sioux City Terminal Railway | |
| SCTR | South Central Tennessee Railroad | |
| SCTU | Shirlstar Container Transport Limited | |
| SCVU | SCVU | |
| SCWX | South Carolina Public Service Authority | |
| SCWZ | Sea Containers | |
| SCXF | South Central Florida Express | |
| SCXU | Alnery No. 954 Limited (U.K.) | |
| SCXY | St. Croix Valley Railroad Company | |
| SCYX | First Union Rail | |
| SCYZ | Sea ContainersIncorporated | |
| SCZU | Yorkshire Marine Containers (BNSF) | |
| SDCX | Consolidated Minerals Incorporated Feed Supplement Division | |
| SDEX | Swindell-Dressler Energy Supply Company | |
| SDIY | San Diego and Imperial Valley Railroad Company | |
| SDPX | South Dakota Soybean Processors | |
| SDRX | Central Puget Sound Regional Transit Authority | |
| SDSU | Soo Line Railroad | |
| SE | Semo Port Railroad Incorporated | |
| SEAU | Sea-Land Service Incorporated | |
| SECX | General Electric Rail Services | |
| SEFX | North American Rails Leasing Corporation | |
| SEI | Southeastern International Corporation | |
| SEIU | Strategic Equipment Systems Incorporated | |
| SEIX | Seimax Gas Corporation | |
| SEIZ | Strategic Equipment Systems Incorporated | |
| SEKR | Southeast Kansas Railroad Company | |
| SEMX | Seminole Electric Cooperative | |
| SEPA | Southeastern Pennsylvania Transportation Authority | |
| SEPX | Southwestern Electric Power Company (La.) | |
| SEQX | Sequa Chemicals Incorporated | |
| SERA | Sierra Railroad Company | |
| SERX | ACF Industries Incorporated | |
| SESX | B.C. Hydro | |
| SFAL | SF and L Railway Incorporated | |
| SFIX | HELM Financial Corporation | |
| SFLC | Burlington Northern and Santa Fe Railway Company | |
| SFLR | Shore Fast Line Incorporated | |
| SFQ | Burlington Northern and Santa Fe Railway Company | |
| SFR | Southern Freight Logistics LLC (d/b/a Southern Freight Railroad) | |
| SFRX | Southern Foundry Supply Incorporated | |
| SFS | Santa Fe Southern Railway Incorporated | |
| SFSX | San Francisco Transportation Services Company Incorporated | |
| SFTU | Burlington Northern and Santa Fe Railway Company | |
| SFTX | Continental Tank Car Corporation | |
| SFTZ | Burlington Northern and Santa Fe Railway Company | |
| SFVZ | Burlington Northern and Santa Fe Railway Company | |
| SGAU | Saga and Company Limited | |
| SGAX | SGA Leasing Company | |
| SGCX | Sungas Corporation of Florida | |
| SGIX | Vision Energy Minnesota Incorporated | |
| SGLR | Seminole Gulf Railway L.P. | |
| SGRX | Skip Gibbs | |
| SGSX | Terra International Incorporated | |
| SGTU | Sogotra Ltd | |
| SGVY | Saginaw Valley Railway Company Incorporated | |
| SH | Steelton and Highspire Railroad Company | |
| SHLX | Procor Limited | |
| SHPX | ACF Industries Incorporated | |
| SHSZ | H and S Railroad Company Incorporated | |
| SHWU | Showa Maritime USA Incorporated | |
| SHWZ | Showa Line Limited | |
| SI | Union Pacific Railroad Company (Spokane International) | |
| SICX | Sloss Industries Corporation | |
| SIEX | Southeastern Industrial Enterprises Incorporated | |
| SIGX | Southern Indiana Gas and Electric | |
| SILU | Suttons International | |
| SIND | Southern Indiana Railway Incorporated | |
| SIPX | Arrendadora Sipco S.A. de C.V. | |
| SIRR | Southern Industrial Railroad | |
| SIRX | Southern Illinois Railcar Company | |
| SISU | Scandinavian Cargo Sea A.B. | |
| SITX | Sherritt International Corporation | |
| SJEX | SJEX Incorporated | |
| SJNX | Mobay Corporation | |
| SJRT | St. Johns River Terminal | |
| SJRX | Jacksonville Electric Authority | |
| SJSZ | Specialty Chassis Leasing Incorporated | |
| SJVR | San Joaquin Valley Railroad Company | |
| SKCX | ARCO Chemical Company | |
| SKGX | Sibley Railcar and Parts Incorporated | |
| SKIU | XTRA Intermodal | |
| SKIZ | XTRA Intermodal | |
| SKNX | Saskatchewan Grain Car Corporation | |
| SKOL | South Kansas and Oklahoma Railroad | |
| SKPR | Southern Kent and Pacific RR Company | |
| SKPX | Saskatchewan Grain Car Corporation | |
| SKRX | Schuylkill Railcar L.P. | |
| SKRZ | XTRA Intermodal | |
| SL | Salt Lake City Southern Railroad | |
| SLAL | South Plains Lamesa Railroad | |
| SLBU | Showa Line Limited | |
| SLC | San Luis Central Railroad Company | |
| SLCU | SLC Societe Location Containers | |
| SLDU | SHOWA Line Limited | |
| SLEX | Short Line Enterprises Limited | |
| SLFU | SHOWA Line Limited | |
| SLGG | Progress Rail Services Corporation d/b/a Sidney and Lowe Railroad | |
| SLGW | Salt Lake Garfield and Western Railway Company | |
| SLHU | SHOWA Line Limited | |
| SLIU | Star Lines Equipment Incorporated | |
| SLIZ | Star Lines Shipping Company Inc | |
| SLKU | Sea-Link Container Lines | |
| SLOU | Showa Line Limited | |
| SLQ | St. Lawrence and Atlantic Railroad (Quebec) Incorporated | |
| SLR | St. Lawrence and Atlantic Railroad Company | |
| SLRR | St. Lawrence and Raquette River Railroad | |
| SLRS | SMS Rail Service Incorporated | |
| SLRU | Showa Line Limited | |
| SLSF | Burlington Northern and Santa Fe Railway Company (Frisco) | |
| SLVX | Silver Enterprises | |
| SLWC | Stillwater Central Railroad Company Incorporated | |
| SM | St. Marys Railroad Company | |
| SMA | San Manuel Arizona Railroad Company | |
| SMCX | San Miguel Electric Cooperative | |
| SMCZ | Maine Central Railroad Company | |
| SMDU | Minnesota Mining and Manufacturing (3M) Company | |
| SMEX | South Mississippi Electric Power Association | |
| SMIX | Structural Metals Incorporated | |
| SMLU | Seaboard Marine Limited | |
| SMLZ | Seaboard Marine Limited | |
| SMMX | St. Marys Cement Company | |
| SMNR | Southern Manitoba Railway Incorporated | |
| SMNX | Solvay Minerals Incorporated | |
| SMPX | Commercial Metal Company | |
| SMRR | Sisseton Milbank Railroad Incorporated | |
| SMRX | Atlanta Chapter B National Railway Historical Society Incorporated | |
| SMV | Santa Maria Valley Railroad Company | |
| SNBL | Sioux City and New Orleans Barge Line | |
| SNFX | IND/AG Chemicals Incorporated | |
| SNHX | IND/AG Chemicals Incorporated | |
| SNLU | Schneider National | |
| SNLZ | Schneider National | |
| SNWU | Ste National Der Wagon Reservior | |
| SO | South Orient | |
| SOCX | BP Amoco Chemical Company BP Oil Division | |
| SOEX | Shell Oil Company | |
| SOFU | Sofredi | |
| SOIX | Sand Seed Service Incorporated | |
| SOM | Somerset Railroad Corporation | |
| SONX | Soneco Services Incorporated | |
| SOO | Soo Line Railroad Company | |
| SOOZ | Soo Line Railroad Company | |
| SOPR | South Pierce Railroad | |
| SORA | Southern Rails Cooperative Limited | |
| SOTX | Southern Concrete Construction Company Incorporated | |
| SOU | Norfolk Southern Railway Company | |
| SOU | Norfolk Southern Railway Company (Southern) | |
| SOUU | Norfolk Southern Railway Company | |
| SOUZ | Norfolk Southern Railway Company | |
| SP | Union Pacific Railroad Company (Southern Pacific) | |
| SPAX | Southeastern Pennsylvania Transportation Authority | |
| SPAZ | Spanish Lines | |
| SPCH | Qwest Communications Corporation | |
| SPCU | Spacific Container Lease Pty Ltd | |
| SPCX | Qwest Communications Corporation | |
| SPDU | Union Pacific Railroad Company | |
| SPDZ | Union Pacific Railroad Company | |
| SPFE | Union Pacific Railroad Company | |
| SPFZ | Union Pacific Railroad Company | |
| SPGX | Suburban Propane LP | |
| SPIX | Sweeteners Plus Incorporated | |
| SPLU | Compania Trasatlantica Espanola (Spanish Line) | |
| SPLZ | Union Pacific Railroad Co | |
| SPPU | Splosna Plovba Piran | |
| SPQ | Union Pacific Railroad Company | |
| SPRX | Seaport Central Railroad Incorporated | |
| SPS | Burlington Northern and Santa Fe Railway Company (Spokane, Portland & Seattle) | |
| SPSX | Progress Rail Services Corporation | |
| SPTX | Trinity Rail Management Incorporated | |
| SPTZ | Union Pacific Railroad Co (Southern Pacific) | |
| SPUD | St. Paul Union Depot Company | |
| SQVR | Sequatchie Valley Railroad | |
| SR | Kansas City Southern Railway Company | |
| SRC | Strasburg Railroad Company | |
| SRCX | Sid Richardson Carbon Company | |
| SREX | StatesRail Equipment Company LLC | |
| SRIX | Southwest Rail Industries Incorporated | |
| SRLX | Southern Rail Leasing Incorporated | |
| SRN | Sabine River and Northern RR Company | |
| SRNJ | Southern Railroad Company of New Jersey | |
| SRPX | Salt River Project Agricultural Improvement and Power District | |
| SRRX | Star Railroad Equipment | |
| SRSU | Sea-Road Shipping S.A. Miami FL | |
| SRSX | Sperry Rail Service | |
| SRY | Southern Railway of British Columbia Limited | |
| SRYC | Sierra Railway Company of California | |
| SS | Sand Springs Railway Company | |
| SSAM | Sault Ste. Marie Bridge Company (Canadian National) | |
| SSC | Southern Switching Company | |
| SSCU | States Steamship Company | |
| SSCZ | States Steamship Company | |
| SSD | Union Pacific Railroad Company | |
| SSDK | Savannah State Docks Railroad Company | |
| SSH | South Shore | |
| SSIU | Japan Line Limited | |
| SSIX | General Electric Rail Services Corporation | |
| SSIZ | Japan Line Limited | |
| SSJR | Sheffield Station Jct. Railway | |
| SSJU | Sumitomo 3M | |
| SSLV | Southern San Luis Valley Railroad | |
| SSLZ | Sea Star Line LLC | |
| SSMX | David J. Joseph Company | |
| SSOR | Sisseton Southern Railway Company | |
| SSPB | Seaspan International Limited | |
| SSPX | A. E. Staley Manufacturing Company | |
| SSSU | Hansen and TidemannIncorporated | |
| SSSX | Transportation Logistics Corporation | |
| SSSZ | Hansen and TidemannIncorporated | |
| SSVX | SSI Industries (M of Way Cars) | |
| SSW | Union Pacific Railroad Company (St. Louis Southwestern) | |
| SSWN | Union Pacific Railroad Company | |
| ST | ST Rail System | |
| STAU | Star Shipping A Norway | |
| STAX | OCI Chemical Corporation | |
| STCX | Sterling China Company(Captive Service) | |
| STE | Stockton Terminal and Eastern RR | |
| STEX | Sterling Chemicals Incorporated | |
| STGX | South Texas Grain Company Incorporated | |
| STJX | Stone Container (Canada) Incorporated | |
| STLH | St. Lawrence and Hudson Railway Company Limited (Canadian Pacific) | |
| STLU | Matson Navigation Company | |
| STLX | A. E. Staley Manufacturing Company | |
| STLZ | Matson Navigation Company | |
| STMA | St. Maries River Railroad Company | |
| STMX | A. E. Staley Manufacturing Company Industrial Products Group | |
| STMZ | Texas Mexican Railway Company | |
| STOX | ACF Industries Incorporated Amcar Division | |
| STPX | Strategic Transport Systems Incorporated | |
| STR | Shawnee Terminal Railway Company | |
| STRT | Stewartstown Railroad Company | |
| STRX | Trinity Industries Leasing Company | |
| STRZ | Stroh/Schlitz Brewery | |
| STSX | A. E. Staley Manufacturing Company | |
| STTU | Shirlstar Container Transport Limited | |
| STTX | TTX Company | |
| STTZ | Stevens Transport | |
| SUAB | Southern Alabama Railroad Company Inc | |
| SUDU | Columbus Line Incorporated | |
| SULX | Sultran Limited | |
| SUN | Sunset Railway Company | |
| SUNX | Sun Refining and Marketing Company | |
| SUTU | Suttons International | |
| SUTX | Sumter Transport Company Incorporated | |
| SV | Greater Shenandoah Valley Development Dev. Company d/b/a Shenandoah Valley Railroad | |
| SVRR | Shamokin Valley Railroad Company | |
| SW | Southwestern Railroad Company | |
| SWFX | Stone Container Corporation | |
| SWFZ | Swift Transportation | |
| SWGR | Seagraves Whiteface and Lubbock Railroad | |
| SWKR | San Pedro and Southwestern Railway Company | |
| SWP | Southwest Pennsylvania Railroad | |
| SWPX | Southwestern Portland Cement Company | |
| SWRX | Transportation Equipment Incorporated | |
| SWTZ | St. Louis Southwestern Railway Company | |
| SWYX | OCI Chemical Wyoming Company | |
| SXSX | Ron Johnson and Associates | |
| SYRX | Minnesota Corn Processors Bulk Products Division | |
| SYSX | United States Systems Incorporated | |
| TACX | American Coal Sales Company | |
| TAG | Norfolk Southern Railway Company (Tennessee, Alabama & Georgia) | |
| TAIX | Texas Alkyls Incorporated | |
| TALX | Trical Incorporated | |
| TALZ | Transamerica Leasing Incorporated | |
| TANX | TransiTech Incorporated | |
| TANZ | Intermodal Express Incorporated | |
| TARX | Sandersville Leasing Incorporated | |
| TASD | Terminal Railway Alabama State Docks | |
| TASX | TransRail Incorporated | |
| TATX | General Electric Rail Services Corporation | |
| TAXU | TRAC Lease Incorporated | |
| TAXZ | TRAC Lease Incorporated | |
| TAZX | Trade Wind Limited | |
| TBCU | Boeing Company | |
| TBCX | Boeing Company | |
| TBER | Terre Haute Brazil and Eastern Railroad | |
| TBRX | Taylor Rail Group Incorporated | |
| TBRY | Thermal Belt Railway | |
| TCAX | General Electric Rail Services Corporation | |
| TCCX | TCCX Corporation | |
| TCDX | Union Tank Car Company | |
| TCG | Tucson Cornelia and Gila Bend Railroad Company | |
| TCGX | Williams Energy Ventures Incorporated | |
| TCGZ | Columbus and Greenville Railway Company | |
| TCIX | Trinity Chemical Leasing LLC | |
| TCKR | Turtle Creek Industrial RR.Incorporated | |
| TCLU | TCL Tankcargo Container Leasing S.A. | |
| TCLX | Trinity Chemical Leasing LLC | |
| TCMX | CIT Group/Capital Finance Incorporated | |
| TCOX | Concrete Company | |
| TCOZ | Terminal Consolidation Company | |
| TCPZ | Transamerica Leasing Incorporated | |
| TCQX | Thrall Car Manufacturing Company | |
| TCSZ | Triple Crown Services Company (Norfolk Southern) | |
| TCT | Texas City Terminal Railway Company | |
| TCTX | Tube City Incorporated | |
| TCWR | Twin Cities and Western Railroad | |
| TCX | General American Marks Company | |
| TCXU | TCX S A R L | |
| TCZU | Triple Crown Services Company | |
| TDNZ | Transamerica Leasing Incorporated (BNSF) | |
| TDPZ | Transport International Pool Incorporated | |
| TDSZ | Transamerica Distribution Services Incorporated | |
| TE | Tacoma Eastern Railway Company | |
| TEAX | Transportation Equipment Incorporated | |
| TEGX | Transenergy Grinding Incorporated | |
| TEHU | Trans Ocean Container Corporation | |
| TEIX | Transportation Equipment Incorporated | |
| TELX | ELF Atochem North America Incorporated | |
| TEMX | Temple-Inland Forest Products | |
| TENN | Tennessee Railway Company | |
| TERZ | Tacoma Eastern Railway Company | |
| TEUU | Gulfcoast Transit Company | |
| TEXC | Texas Central Railroad Company | |
| TEXU | Textainer Incorporated | |
| TFLU | Trans Freight Lines Incorporated | |
| TFM | TFM S.A. de C.V. | |
| TFVM | Terminal Ferroviaria Del Velle De Mexico S.A. de C.V. | |
| TFZ | Terminal Freight Handling Company | |
| TGAX | PCS Phosphate Company Incorporated | |
| TGCU | TCS Transglobe Container Services GMBH | |
| TGCX | GEON Company | |
| TGIX | PCS Phosphate Company Incorporated | |
| TGOX | First Union Rail | |
| TGPU | Transamerica Leasing Incorporated | |
| TGPX | Tamak Transportation Corporation | |
| TGRX | Transglobal Rail Incorporated | |
| TGSX | Tg Soda Ash Incorporated | |
| THB | Canadian Pacific Railway | |
| THCX | MG Industries | |
| THRX | Transportation Corporation of America | |
| TIBR | TimberRock Railroad Company Incorporated | |
| TILU | Tirrenia Di Navigazione S.P.A. | |
| TILX | Trinity Industries Leasing Company | |
| TIMX | Trinity Industries Leasing Company | |
| TINU | Tioxide (U.K.) Limited | |
| TINX | Trinity Industries Leasing Company | |
| TIPZ | TIP Intermodal Services | |
| TIRL | Tonawanda Island Railroad Incorporated | |
| TIRZ | Union Pacific Railroad Company | |
| TISX | Trinity Industries Leasing Company | |
| TJRX | S. M. Brooks | |
| TKCU | ABS Pacific | |
| TKCX | Thiele Kaolin Company | |
| TKEN | Tennken Railroad Company Incorporated | |
| TLAU | Trail-Con Leasing Incorporated (Canadian Pacific Limited) | |
| TLAZ | Trail-Con Leasing Incorporated | |
| TLCX | General Electric Rail Services Corporation | |
| TLDX | General Electric Rail Services Corporation | |
| TLIU | Trans Leasing Incorporated | |
| TLTX | Tilcon Tomasso Quarries Incorporated | |
| TM | Texas Mexican Railway Company | |
| TMAX | Tenneco Packaging Company | |
| TMBL | Tacoma Municipal Belt Line Railway | |
| TMEX | Trinity Industries Leasing Company | |
| TMEZ | Transamerica Leasing Incorporated (BNSF) | |
| TMGX | Transporte Multimodal de Granos | |
| TMIX | TransMatrix Incorporated | |
| TMKZ | Transport International Pool Incorporated | |
| TMLU | Taylor Minster Leasing Limited | |
| TMLX | Temco Corporation | |
| TMLZ | Seaboard Marine Limited | |
| TMMU | Transportacion Maritima Mexicana S.A. | |
| TMPX | Texas Municipal Power Agency | |
| TMPZ | TIP Intermodal Services | |
| TMSS | Towanda-Monroeton Shippers Lifeline Incorporated | |
| TMT | Trailer Marine Transport Corporation | |
| TMTU | P and O Tank Masters | |
| TMTZ | Trailer Marine Transport Corporation | |
| TN | Texas and Northern Railway Company | |
| TNAX | TransAmerican Refining Corporation | |
| TNCX | General Electric Rail Services Corporation | |
| TNER | Texas Northeastern Division Mid-Michigan Railroad Incorporated | |
| TNM | Union Pacific Railroad Company | |
| TNMR | Texas and New Mexico Division Austin and Northwestern Railroad Company Limited | |
| TNR | Kansas City Southern Railway Company | |
| TNXU | Transx Limited | |
| TNXZ | Transx Limited | |
| TOE | Texas Oklahoma and Eastern RR Company | |
| TOFU | TOFC Incorporated Division of Fruehauf | |
| TOFZ | TOFC Incorporated Division of Fruehauf | |
| TOLU | Trans Ocean Leasing | |
| TOLZ | Trans Ocean Leasing | |
| TONU | Trans Ocean Line Limited | |
| TOR | RailAmerica | |
| TORU | Torm Lines | |
| TORZ | Torco Inc | |
| TOTU | Tiphook Container | |
| TOTX | Cotco Incorporated | |
| TP | Union Pacific Railroad Company (Texas & Pacific) | |
| TPCZ | Tiphook Container Rental Company Limited | |
| TPEX | General Electric Rail Services Corporation | |
| TPFX | General Electric Rail Services Corporation | |
| TPGX | Technical Propellants Incorporated | |
| TPHU | Tiphook Container Rental Company Limited | |
| TPHX | Thomas Payne Holdings Incorporated | |
| TPIU | Tropicana Products Incorporated | |
| TPIX | Tropicana Products Sales Incorporated | |
| TPKU | Toledo Peoria and Western Railway Corporation | |
| TPKU | Trafpak Limited Aylesbury G.B. | |
| TPLX | Trans-Pacific Lines | |
| TPSX | TPS Leasing Company LLC | |
| TPTX | Trailer Train Company | |
| TPW | Toledo Peoria and Western Railway | |
| TPXU | Tiphook Container Rental Company Limited | |
| TPZ | Union Pacific Railroad Co | |
| TQEX | First Union Rail | |
| TR | Tomahawk Railway L.P. | |
| TRAU | Associated Transport Line | |
| TRAX | RailAmerica | |
| TRC | Trona Railway Company | |
| TRCX | Tri-County Commuter Rail Authority | |
| TRDU | Triad Transport Incorporated | |
| TREX | Tetra Technologies Incorporated | |
| TRFU | Trans Freight Incorporated | |
| TRFZ | Transcontinental Refrigerator Lines Incorporated | |
| TRGX | First Union Rail | |
| TRIN | Trinidad Railway Incorporated | |
| TRIU | Triton Container International Incorporated | |
| TRIX | GATX Capital Corporation | |
| TRLU | Transamerica Leasing Incorporated | |
| TRLX | Texas Railcar Leasing Company | |
| TRMW | City of Tacoma d/b/a Tacoma Rail Mountain Division | |
| TRMX | The Railroad Museum-TRM Industries | |
| TRNX | General Electric Rail Services Corporation | |
| TROU | Trans Ocean Limited | |
| TRPX | AmeriGas Propane L.P. | |
| TRRA | Terminal Railroad Association of St. Louis | |
| TRSU | Transconex Incorporated | |
| TRTX | W.J.Kirberger Trustee | |
| TRUX | Midwest Bottle Gas Company | |
| TRZU | Transamerican Container Leasing Company | |
| TRZZ | Transamerican Leasing Incorporated | |
| TSBY | Tuscola and Saginaw Bay Railway Company | |
| TSE | Texas South-Eastern Railroad Company | |
| TSFU | Transamerica Leasing Incorporated (BNSF) | |
| TSKU | N.Y.K. Line | |
| TSLZ | Transportation Specialists Limited | |
| TSNR | Tyson Railroad Incorporated | |
| TSOZ | Tank Solutions Incorporated | |
| TSPZ | Transamerica Leasing Incorporated (BNSF) | |
| TSRD | Twin State Railroad Company | |
| TSRR | Tennessee Southern Railroad Company | |
| TSSX | U.S. Dept. of Energy Albuquerque Operations Office | |
| TSU | Tulsa-Sapulpa Union Railway Company | |
| TSU | Tulsa-Sapulpa Union Railway Company LLC | |
| TSVX | Tennsv Incorporated | |
| TSWR | Toppenish Simcoe and Western Railroad | |
| TSXX | Tri-State Generation and Transmission Assoc. | |
| TSXZ | Transamerica Leasing Incorporated | |
| TTAX | TTX Company | |
| TTBX | TTX Company | |
| TTCU | TNC Chemicals Company | |
| TTCX | TTX Company | |
| TTDX | TTX Company | |
| TTEX | TTX Company | |
| TTFX | TTX Company | |
| TTGX | TTX Company | |
| TTHX | TTX Company | |
| TTIS | Transkentucky Transportation Railroad Incorporated | |
| TTIU | Thailand Tantalum Industry Corporation Limited | |
| TTIZ | Tandem Transport Incorporated | |
| TTJX | TTX Company | |
| TTKX | TTX Company | |
| TTLC | Tropical Trailer Leasing Corporation | |
| TTLX | TTX Company | |
| TTLZ | Tropical Trailer Leasing Corporation | |
| TTMX | TTX Company | |
| TTNX | TTX Company | |
| TTOX | TTX Company | |
| TTOZ | Totem Ocean Trailer Express Incorporated | |
| TTPX | TTX Company | |
| TTPZ | Canadian National Railway | |
| TTQX | TTX Company | |
| TTR | Talleyrand Terminal Railroad Company | |
| TTRU | Tropical Shipping and Construction Company Limited | |
| TTRX | TTX Company | |
| TTRZ | Train Trailer Rentals Limited | |
| TTSX | TTX Company | |
| TTSZ | Triton Transport Services | |
| TTTU | Transport International Containers S.A. | |
| TTTX | TTX Company | |
| TTTZ | Puerto Rican Maritime Authority | |
| TTUX | TTX Company | |
| TTVX | TTX Company | |
| TTWU | Canadian National Railway | |
| TTWX | TTX Company | |
| TTWZ | Canadian National Railway | |
| TTX | TTX Company | |
| TTZX | TTX Company | |
| TUGX | Texas Utilities Mining Company | |
| TUPX | Texas Ultra Pure Incorporated | |
| TUST | Texarkana Union Station Trust | |
| TVAX | Tennessee Valley Authority | |
| TVBX | TVGX Group | |
| TVM | Ferrocarriles Nacionales de Mexico | |
| TVRR | Tulare Valley Railroad Company | |
| TWLZ | Trans West Logistics | |
| TWNZ | Twinstar Leasing Limited | |
| TWSX | A.E. Staley Manufacturing Company | |
| TXGN | Texas Gonzales and Northern Railway Company | |
| TXIX | Texas Industries Incorporated | |
| TXNW | Texas North Western Railway Company | |
| TXOR | Texas and Oklahoma Railroad Company | |
| TXPX | Texas Petrochemicals Corporation | |
| TXR | Texas Rock Crusher Railway Company | |
| TXTC | Texas Transportation Company | |
| TXUX | TU Electric | |
| TXXZ | Trac Lease Incorporated | |
| TYBR | Tyburn Railroad Company | |
| TYC | Tylerdale Connecting | |
| UACU | United Arab Shippers | |
| UAEU | United Arab Shipping Company (S.A.G.) | |
| UAIX | United Asphalts Incorporated | |
| UASU | United Arab Shipping Company | |
| UASZ | United Arab Shipping Company | |
| UBCU | United Fruit Company | |
| UBMU | United Baltic Corporation Limited | |
| UCAU | UCA Containers AG | |
| UCCU | American Cyanamide | |
| UCCX | Union Carbide Canada Limited | |
| UCEX | Union Electric Company | |
| UCFX | Union Carbide Corporation | |
| UCIR | Union County Industrial Railroad | |
| UCLU | Unicorn Lines (Pty) Limited | |
| UCLX | Vulcan Materials Co ChemicalsDiv | |
| UCMX | United Clays Incorporated | |
| UCOX | Praxair Incorporated | |
| UCRY | Utah Central Railroad Company | |
| UCSX | Union Camp Corporation | |
| UELX | ADM Transportation Company | |
| UFCU | Flexi-Van Leasing Incorporated | |
| UFCZ | Flexi-Van Leasing Incorporated | |
| UFIX | Houston Lighting and Power Company | |
| UGMU | Evergreen International (USA) Corporation | |
| UHRX | Upper Hudson River Railroad Corporation | |
| UIWX | Riley Stoker Corporation | |
| UMP | Upper Merion and Plymouth Railroad | |
| UMPX | First Union Rail | |
| UMSZ | Intermodal Services Incorporated | |
| UNBX | General Electric Rail Services Corporation | |
| UNCX | CGTX Incorporated | |
| UNPX | Procor Limited | |
| UNSX | MidAmerican Energy Company | |
| UNTX | MRC Rail Services LLC | |
| UOCX | General American Marks Company | |
| UOEX | UNO-VEN | |
| UOPX | UOP A New York Partnership | |
| UP | Union Pacific Railroad Company | |
| UPAX | United Power Association | |
| UPBZ | Union Pacific Railroad Company | |
| UPCU | USPCI Incorporated | |
| UPCX | Laidlaw Environmental Services Incorporated | |
| UPFE | Union Pacific Railroad Company (Union Pacific Fruit Express) | |
| UPFU | Union Pacific Bulktainer Service | |
| UPHZ | Union Pacific Railroad Company | |
| UPNZ | Union Pacific Railroad Company | |
| UPOZ | United Parcel Service | |
| UPP | Union Pacific Railroad Company (Passenger cars) | |
| UPR | Union Pacific Railroad Company | |
| UPRU | Union Pacific Railroad Company | |
| UPSZ | United Parcel Service | |
| UPTU | Union Pacific Bulktainer Service | |
| UPUU | Union Pacific Bulktainer Service | |
| UPWZ | United Parcel Service | |
| UPZ | Union Pacific Railroad Company | |
| URDX | Arch of Kentucky Incorporated | |
| URGX | UniCapital Rail Group | |
| URR | Union Railroad Company (Pittsburgh PA.) | |
| URY | Union Ry. of Memphis | |
| USAU | Pan Texas Leasing Incorporated | |
| USAX | Department of Defence Troop Support and Aviation Material Readiness Command (Intraplant) | |
| USAZ | XTRA Intermodal | |
| USBX | General Electric Rail Services Corporation | |
| USCU | Union Steam Ship Company of NZ Limited | |
| USCX | William G. Simon | |
| USEX | General Electric Rail Services Corporation | |
| USFU | US Department of Defense Air Force | |
| USIX | Equistar Chemicals LP | |
| USLU | United States Lines Incorporated | |
| USLX | General Electric Rail Services Corporation | |
| USLZ | United States Lines Incorporated | |
| USMU | US Department of Defense Marine Corps | |
| USMX | U.S. Steel Mining Company Incorporated | |
| USNU | US Department of Defense Navy | |
| USNX | Department of Defence Military Traffic Management Command (Intra Plant Service) | |
| USPX | U.S. Plastics Corporation | |
| USPZ | U.S. Postal Service | |
| USRX | U.S. Railways, Inc. | |
| USSU | United Steel and Strip Corporation | |
| USWX | USA Waste Services Incorporated | |
| UTAH | Utah Railway Company | |
| UTCU | Stolt Tank Containers Incorporated | |
| UTCX | Union Tank Car Company | |
| UTHZ | Transamerica Leasing Inc | |
| UTLX | Union Tank Car Company | |
| UTLZ | United Trailer Leasing Company | |
| UTPX | Suburban Propane LP | |
| UTTX | TTX Company | |
| UUAX | Up-Up and Away Incorporated | |
| UUUZ | Uiterwyk Corporation | |
| UYLU | United Yugoslav Lines (Kerr Steamship Company Agents) | |
| UYLZ | United Yugoslav Lines | |
| VAIU | Transports International Vaicon | |
| VALE | Valley Railroad Company | |
| VALX | Sierra Pacific Power Company/Idaho Power Company | |
| VAPX | Virginia Power | |
| VB | Van Buren Bridge Company (Bangor & Aroostook) | |
| VCRR | Ventura County Railroad Company | |
| VCRX | Vaughn Leasing and Rental Corporation | |
| VCSX | PLM International Incorporated | |
| VCY | Ventura County Railway Company | |
| VEPX | HELM Equipment Leasing Company | |
| VERX | Verson Division of Allied Products Corporation | |
| VESU | Vespucci Marine Company Limited | |
| VGN | Norfolk Southern Railway Company (Virginian) | |
| VGPX | Valley Grain Products Incorporated | |
| VIAX | VIAX Incorporated | |
| VICX | Union Tank Car Company | |
| VIKU | Viking Freight Systems Incorporated | |
| VIKZ | Viking Freight Systems Incorporated | |
| VILX | LaRoche Industries | |
| VIPX | Union Tank Car Company | |
| VMCX | Commonwealth Plan Incorporated | |
| VMEX | Vernor Materials Equipment Company | |
| VMVX | VMV Enterprises Incorporated | |
| VOSU | Bureau Veritas | |
| VOTX | Volunteer Trailblazers Incorporated | |
| VR | Valdosta Railway L.P. | |
| VREX | Virginia Railway Express | |
| VRR | Vaughan Railroad Company | |
| VRRC | Vandalia Railroad Company | |
| VS | V and S Railway Incorporated | |
| VSRR | Virginia Southern DivisionNorth Carolina and Virginia Railroad | |
| VTGU | VTG Vereinigte Tanklager U Transportmittel | |
| VTR | Vermont Railway Incorporated | |
| VTRZ | Vermont Railway Incorporated | |
| VTTX | TTX Company | |
| VUHX | Wagner Mills Incorporated | |
| VULX | Vulcan Materials Company Construction Materials Group | |
| VWCX | Railcar Leasing Specialists Incorporated | |
| VYMX | Voith Hydro Incorporated | |
| WA | CSX Transportation Incorporated (Western Railway of Alabama) | |
| WAB | Norfolk Southern Railway Company | |
| WABZ | WTL Rail Corporation | |
| WACR | Washington County Railroad Corporation | |
| WACX | Albright and Wilson Company | |
| WAER | Wabash and Erie Railroad | |
| WAFX | Western Ash Company | |
| WAGX | PCS Phosphate Company Incorporated | |
| WAJU | Elder Dempster Lines Nigerian National Line | |
| WAKX | Wake Partnership | |
| WAMX | Webb Asset Management | |
| WAND | Wisconsin and Michigan Railway Company | |
| WAR | Warrenton Railroad Company | |
| WATC | Washington Terminal Company | |
| WATR | Water Carriers | |
| WATZ | Western Auto | |
| WBCR | Wabash Central Railroad Corporation | |
| WBCX | Blue Circle Incorporated | |
| WBMX | Lauhoff Grain Company | |
| WBTS | Waco Beaumont Trinity and Sabine Railway Company | |
| WC | Canadian National (Wisconsin Central Limited) | |
| WCAX | Westcan Rail Limited | |
| WCCX | Consolidation Coal Company | |
| WCDX | Farmland Industries Incorporated | |
| WCFX | General Electric Rail Services | |
| WCHX | Walter Haffner Company | |
| WCLC | Waccamaw Coast Line Railroad Company | |
| WCLR | Waccamaw Coast Line Railroad Company | |
| WCLU | Orient Overseas Line Incorporated | |
| WCLZ | Wisconsin Central Limited | |
| WCOR | Wellsboro and Corning Railroad Company | |
| WCQ | Wisconsin Central Limited | |
| WCRC | Columbia Basin Railroad Company | |
| WCRL | West Chester Railroad Company | |
| WCSX | Wheelabrator Coal Services Company | |
| WCTR | WCTU Railway Company (White City Terminal) | |
| WCTU | WCTU Railway Company | |
| WCTX | Resource Recycling Incorporated | |
| WDAX | Washington Department of Agriculture | |
| WE | Wheeling and Lake Erie Railway Company | |
| WECX | Westinghouse Electric Corporation | |
| WEIX | Wilbur-Ellis Company | |
| WELX | White Equipment Leasing Corporation | |
| WEPX | Wisconsin Electric Power Company | |
| WERZ | Werner Enterprises Incorporated | |
| WESX | Westar Timber Limited | |
| WETZ | West East Transport Company | |
| WEYU | Weyerhauser Company | |
| WFAX | Western Fuels Association Incorporated (Colo.) | |
| WFCX | Western Farmers Electric Cooperative | |
| WFIX | General Electric Rail Services Corporation | |
| WFS | West Isle Line Incorporated | |
| WGCR | Wiregrass Central Railroad. Incorporated | |
| WGFX | Willard Grain and Feed Incorporated | |
| WGR | Willamina and Grand Ronde Railway | |
| WHCU | US Department of Energy | |
| WHMX | Miner Enterprises | |
| WHOE | Walking Horse and Eastern Railroad | |
| WHRC | Windsor and Hantsport Railway Company | |
| WHTX | ADM Milling Company | |
| WHTZ | Riley Whittle Incorporated (RWI Transportation) | |
| WIF | West India Fruit and Steamship | |
| WIIX | Williamette Industries Incorporated | |
| WIKU | Textainer Incorporated | |
| WIMX | Wimpey Minerals USA Incorporated | |
| WISU | W.I.S.A. | |
| WISX | Wisconsin Power and Light Company | |
| WITX | General Electric Rail Services Corporation | |
| WJ | West Michigan Railroad Company | |
| WKLR | Western Kentucky Railway LLC | |
| WLDX | Weldship Corporation | |
| WLO | Waterloo Railway Company (Illinois Central) | |
| WLPX | Westlake Polymers Corporation | |
| WM | CSX Transportation Incorporated (Western Maryland) | |
| WMI | West Michigan Railroad Co | |
| WMIX | Waste Management of Illinois Incorporated | |
| WMSC | White Mountain Scenic Railroad | |
| WNCX | Wabash National Finance Corporation | |
| WNCZ | Wabash National Finance Corporation | |
| WNFR | Winifrede Railroad Company | |
| WNGX | Western Natural Gas Company | |
| WNYX | Western New York Railway Historical Society | |
| WOHO | Wabash and Ohio Railroad | |
| WOLZ | H. O. Wolding Incorporated | |
| WP | Union Pacific Railroad Company (Western Pacific) | |
| WPEX | Wabash Power Equipment Company | |
| WPGX | Western Paving Construction Company | |
| WPMU | Union Pacific Railroad Company | |
| WPMW | Union Pacific Railroad Company | |
| WPRR | Willamette and Pacific Railroad | |
| WPRU | Waterman of Puerto Rico-USA Incorporated | |
| WPSX | Wisconsin Public Service Corporation | |
| WPTZ | Union Pacific Railroad Company | |
| WPXZ | Union Pacific Railroad Company | |
| WPZ | Union Pacific Railroad Company | |
| WRDX | MidAmerican Energy Company | |
| WREX | Western Railroad Equipment Company | |
| WRFX | White River Trading Incorporated | |
| WRLX | Relco Tank Line Incorporated | |
| WRNX | Chevron U.S.A. Incorporated | |
| WRPI | Western Railroad Properties Incorporated | |
| WRPX | PSI Energy Incorporated (Ind.) | |
| WRRC | Western Rail Road Company | |
| WRSX | Warren Railcar Service Incorporated | |
| WRWK | Providence and Worcester Railroad | |
| WRX | Western Refrigerator Line Company Terminal | |
| WRY | Waterloo Railway Company | |
| WS | Walkersville Southern Railroad | |
| WSIX | Watco Switching Indiana | |
| WSLZ | Wiley Sanders Truck Lines Incorporated | |
| WSOR | Wisconsin and Southern Railroad Company | |
| WSOX | First Union Rail | |
| WSOZ | Wisconsin and Southern Railroad Company | |
| WSPX | Wheelstar Corporation | |
| WSR | Warren and Saline River Railroad | |
| WSRY | Winamac Southern Railway Company | |
| WSRZ | Wisconsin and Southern Railroad Company | |
| WSS | Winston-Salem Southbound Railway Company | |
| WSSX | Wedron Silica Company | |
| WSTX | Whitestone Supply Company | |
| WSTZ | Westside Transport Incorporated | |
| WSX | Wierton Steel Division National Steel Corporation | |
| WTCO | Western Transportation Company | |
| WTCX | Weyerhauser Company | |
| WTJR | Wichita Tillman and Jackson Railway Company Incorporated | |
| WTL | West Texas and Lubbock Railroad Company | |
| WTLR | West Texas and Lubbock Railroad Company | |
| WTLZ | WTL Rail Corporation | |
| WTNN | West Tennessee Railroad Corporation | |
| WTRM | Warren and Trumbull Railroad Company | |
| WTRY | Wilmington Terminal Railroad Incorporated | |
| WTSE | West Shore Railroad Corporation | |
| WTTX | TTX Company | |
| WUT | Wichita Union Terminal Railway | |
| WVC | Durbin and Greenbrier Valley Railroad d/b/a West Virginia Central | |
| WVCX | Westvaco Corporation | |
| WVIU | West Van Incorporated | |
| WVIZ | West Van Incorporated | |
| WVN | Kingswood Northern Incorporated d/b/a West Virginia Northern Railroad | |
| WVR | Willamette Valley Railway Company | |
| WW | Winchester and Western Railroad Company | |
| WWBX | WWIB Transportation Services | |
| WWEX | Wood Waste Energy Incorporated | |
| WWLU | Wihl Wilhelmsen | |
| WWLX | LaRoche Industries Incorporated | |
| WWRC | Wilmington and Western Railroad | |
| WWUX | Unimin Corporation | |
| WYCO | Wyoming and Colorado Railroad | |
| WYCX | Weyerhauser Canada Limited | |
| WYEC | Wye Transportation Company | |
| WYS | Wyandotte Southern Railroad Company | |
| XCCX | Xavier Chemical Corporation | |
| XCLU | Textainer Special Equip. Limited | |
| XCTU | XTRA Intermodal (BNSF) | |
| XCTZ | XTRA Intermodal | |
| XCWZ | Union Pacific Railway Company | |
| XFEZ | Florida East Coast Railway | |
| XKTZ | XTRA Incorporated | |
| XMCZ | Maine Central Railroad | |
| XMTZ | XTRA Intermodal | |
| XNWZ | Norfolk Southern Railway Company | |
| XPMZ | Puerto Rican Maritime Shipping Authority | |
| XRFZ | CSX Transportation Incorporated | |
| XSCZ | CSX Transportation Incorporated | |
| XSLZ | Soo Line Railroad | |
| XTCU | Van Donge En De Roo | |
| XTMZ | Trailer Marine Transport Company | |
| XTRU | Genstar Container Corporation | |
| XTRX | First Union Rail | |
| XTRZ | XTRA Intermodal | |
| XTTX | TTX Company | |
| YARR | Youngstown and Austintown Railroad Incorporated | |
| YB | Youngstown Belt Railroad Company | |
| YCEU | Inter-Continental Equipment Incorporated | |
| YFIZ | Yellow Forwarding Company | |
| YFSZ | Yellow Freight Services Incorporated | |
| YKR | Yorkrail Incorporated | |
| YMCZ | Yangming Marine Transport Corporation | |
| YMLU | Yangming Marine Transport Corporation | |
| YMLZ | Yangming Marine Transport Corporation | |
| YS | Youngstown and Southern Railway Company | |
| YSAZ | Nippon Liner System Limited | |
| YSDU | Yamashita-Shinnihon Line | |
| YSJU | Yamashita-Shinnihon Line | |
| YSLR | Yolo Shortline Railroad Company | |
| YSLU | Yamashita-Shinnihon Line | |
| YSLZ | Yamashita-Shinnihon Line | |
| YSTU | Yamashita-Shinnihon Line | |
| YVRR | Yadkin Valley Railroad Company | |
| YVT | Yakim Valley Transportation Company | |
| YW | Yreka Western Railroad Company | |
| ZACX | Zaclon Incorporated | |
| ZBXU | Zim Israel Navigation Company Limited | |
| ZCAX | Zinc Corporation of America | |
| ZCCX | Zeigler Coal Company | |
| ZCSU | Zim American Israeli Shipping Company Incorporated | |
| ZDAZ | XTRA Intermodal | |
| ZIMU | Zim Israel Navigation Company Limited | |
| ZKCC | XTRA Intermodal | |
| ZMFC | XTRA Intermodal | |
| ZRNX | Erie City Energy Division - Zurn Industries Incorporated | |
| ZSPZ | Transamerica Leasing Incorporated | |
| ZTEU | Aztec Leasing Corporation | |
| ZTLX | Ziol Tank Line | |
| ZTTX | TTX Company |
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