class Road{

  constructor(x1,y1,x2,y2){

    this.start = createVector(x1,y1); 

    this.end = createVector(x2,y2); 

    this.lights = [];

    this.cars = [];

    this.points = [];

  }

  addLight(l){

    this.lights.push(l);

  }

  addCar(c){

    this.cars.push(c);

  }

  updatePoints(){

    this.points.push(this.start);

    for(let l of this.lights){

      this.points.push(createVector(l.pos.x,l.pos.y + lightDisplacement));

    }

    this.points.push(this.end);

  }

  display(){

    line(this.start.x,this.start.y,this.end.x,this.end.y);

  }

}