System to stop a traffic light when a "vehicle" gets too close

traffic_sensor.ino

int green = 2;
int yellow = 3;
int red = 4;
int trigPin = 5;
int echoPin = 6;

// ECHO to RX0

long duration;
int distance;

// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(green, OUTPUT);
  pinMode(yellow, OUTPUT);
  pinMode(red, OUTPUT);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  Serial.begin(9600); // Starts the serial communication
  out_distance();
}

// the loop function runs over and over again forever
void loop() {
  // do_traffic();
}

void do_traffic(){
  digitalWrite(green, LOW); 
  digitalWrite(red, HIGH);   
  delay(10000);
  digitalWrite(red, LOW);
  digitalWrite(yellow, HIGH);
  delay(2000);
  digitalWrite(yellow, LOW);
  digitalWrite(green, HIGH);
  delay(10000);
  out_distance();
}

void out_distance(){
  while (1 == 1) {
    // Clears the trigPin
    digitalWrite(trigPin, LOW);
    delayMicroseconds(2);
    // Sets the trigPin on HIGH state for 10 micro seconds
    digitalWrite(trigPin, HIGH);
    delayMicroseconds(10);
    digitalWrite(trigPin, LOW);
    // Reads the echoPin, returns the sound wave travel time in microseconds
    duration = pulseIn(echoPin, HIGH);
    // Calculating the distance
    distance= duration*0.034/2;
    // Prints the distance on the Serial Monitor
    if (distance >= 1000) {
        Serial.print("Anomaly, disregarding \n");
    }
    if (distance <= 10) {
      Serial.print("Getting close, traffic lights activating \n");
      do_traffic();
    }
    else {
     Serial.print("Distance: ");
     Serial.println(distance); 
    }
  }
}