John Evans thejevans

Want bikes off the sidewalk? Build bike lanes.

While UMD policy states that bikes and scooters should be ridden on the road and off of sidewalks[^1], university infrastructure does nothing to incentivize their policy. So when scooterists or cyclists find the university roads unsafe or inconvenient, they take to the sidewalks. Without separate infrastructure, individuals will continue to violate university policy.

We are at a turning point where UMD policy can no longer ignore the deficiencies in transportation infrastructure. The Metro Purple Line construction through campus is a great opportunity for improved infrastructure. More people are cycling since the start of the pandemic[^9]. Fuel prices are high enough that people might also consider cycling as opposed to driving[^10].

A few years ago, while commuting to campus by bicycle, a car abruptly turned in front of me resulting in a collision that not only destroyed my bicycle, but left me with injuries that took months to heal. After a few more close

	# ------------------------------------------------------------------------------
	# import packages
	# ------------------------------------------------------------------------------

	import pathlib

	import polars as pl
	from pypika import Query, Tables
	import pyodbc

	import numpy as np
	# build transition matrix
	transition_matrix = np.zeros((900,900))

	# corner cases
	corner_transition_idx = [(0, 1), (0, 30), (29, 28), (29, 59), (870, 871), (870, 840), (899, 898), (899, 869)]

	# edge cases
	top_idx = [(x, x+30) for x in range(1, 29)] + [(x, x-1) for x in range(1, 29)] + [(x, x+1) for x in range(1, 29)]
	left_idx = [(x, x+30) for x in range(30, 870, 30)] + [(x, x-30) for x in range(30, 870, 30)] + [(x, x+1) for x in range(30, 870, 30)]

	#!/bin/bash

	# takes desired critical percentage as first argument and
	# charged percentage as second, both with default values.
	# example usages:
	#
	# framework_powerled_color.sh
	# framework_powerled_color.sh 10
	# framework_powerled_color.sh 10 98
	#

	#!/bin/bash

	# best used with watch
	# example:
	# watch -n 30 "./dag_watch.sh dag1.dag dag2.dag dag3.dag"

	TOWATCH=("$@")
	for DAG in "${TOWATCH[@]}"; do
	echo "${DAG}:"
	DAGOUT="${DAG}.dagman.out"

	import ast
	import json
	import os
	import sys
	import time

	import pandas as pd
	import py_nextbus

	def parse_and_list(pairs: list) -> dict: