//traffic lights 1 (output 1)
int red1 = 13, yellow1 = 12, green1 = 11;

//traffic lights 2 (output 2)
int red2 = 10, yellow2 = 9, green2 = 8;

//push buttons (input)
int button1 = 2, button2 = 3;


void setup() {
  //push buttons (inputs)
  pinMode(button1, INPUT);
  pinMode(button2, INPUT);

  //traffic lights 1 (output 1) 
  pinMode(red1, OUTPUT);
  pinMode(yellow1, OUTPUT);
  pinMode(green1, OUTPUT);

  //traffic lights 2 (output 2)
  pinMode(red2, OUTPUT);
  pinMode(yellow2, OUTPUT);
  pinMode(green2, OUTPUT);
}

void loop() {
  int buttonVal1 = digitalRead(button1);
  int buttonVal2 = digitalRead(button2);

  while(buttonVal1 == LOW) {
    digitalWrite(red1, HIGH);
    digitalWrite(green2, HIGH);

    delay(5000);

    digitalWrite(green2, LOW);
    digitalWrite(yellow2, HIGH);
    
    delay(2000);

    digitalWrite(green1, HIGH);
    digitalWrite(red2, HIGH);
    digitalWrite(red1, LOW);
    digitalWrite(yellow2, LOW);

    delay(5000);

    digitalWrite(green1, LOW);
    digitalWrite(yellow1, HIGH);

    delay(2000);

    digitalWrite(red1, HIGH);
    digitalWrite(green2, HIGH);
    digitalWrite(red2, LOW);
    digitalWrite(yellow1, LOW);
  }

  int redVal1 = digitalRead(red1);
  int redVal2 = digitalRead(red2);

  if(redVal1 == LOW){
    digitalWrite(yellow1, HIGH);
    digitalWrite(green1, LOW);
    delay(500);
    digitalWrite(yellow1, LOW);
    digitalWrite(red1, HIGH);
  }

}