int Kuning_lorong_1 = 10;
int Kuning_lorong_2 = 11;
int Hijau_lorong_1 = 12;
int Hijau_lorong_2 = 13;

void setup() {

  pinMode(Kuning_lorong_1, OUTPUT);
  pinMode(Kuning_lorong_2, OUTPUT);
  pinMode(Hijau_lorong_1, OUTPUT);
  pinMode(Hijau_lorong_2, OUTPUT);

  digitalWrite(Hijau_lorong_1, LOW);
  digitalWrite(Hijau_lorong_2, LOW);
  digitalWrite(Kuning_lorong_1, LOW);
  digitalWrite(Kuning_lorong_2, LOW);

}

void reset(){
  digitalWrite(Hijau_lorong_1, LOW);
  digitalWrite(Hijau_lorong_2, LOW);
  digitalWrite(Kuning_lorong_1, LOW);
  digitalWrite(Kuning_lorong_2, LOW);
}

void lorong1(){
  digitalWrite(Hijau_lorong_2, HIGH);
  digitalWrite(Kuning_lorong_2, HIGH);
  delay(1000);
  digitalWrite(Hijau_lorong_2, LOW);
  digitalWrite(Kuning_lorong_2, LOW);
  digitalWrite(Hijau_lorong_1, HIGH);
}

void lorong2(){
  digitalWrite(Hijau_lorong_1, HIGH);
  digitalWrite(Kuning_lorong_1, HIGH);
  delay(1000);
  digitalWrite(Hijau_lorong_1, LOW);
  digitalWrite(Kuning_lorong_1, LOW);
  digitalWrite(Hijau_lorong_2, HIGH);
}

void loop() {
  lorong1();
  delay(5000);
  lorong2();
  delay(5000);
}