#define pedestrian 2;
#define green 3;
#define yellow 4;
#define red 5;

void setup() {
  // put your setup code here, to run once:
  pinMode(green, OUTPUT);
  pinMode(yellow, OUTPUT);
  pinMode(red, OUTPUT);
  pinMode(pedestrian, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:

}