void setup() {
  // laululintas 2 cabang pin 1-9
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(10, OUTPUT);
pinMode(11, OUTPUT);
pinMode(12, OUTPUT);

digitalWrite(2, HIGH);//LED WARNA MERAH NYALA TERUS
digitalWrite(9, HIGH);//LED WARNA MERAH NYALA TERUS
}

void loop() {
  // jalan 1
  digitalWrite(5, LOW);
  digitalWrite(3, HIGH);
  delay(1000);
  digitalWrite(3, LOW);
  digitalWrite(1, HIGH);
  delay(1000);
  digitalWrite(1, LOW);
  digitalWrite(5,HIGH);
  delay(1000);
  digitalWrite(5, LOW);
  digitalWrite(3, HIGH);

  // JALAN 2
  digitalWrite(13, LOW);
  digitalWrite(11, HIGH);
  delay(1000);
  digitalWrite(11, LOW);
  digitalWrite(9, HIGH);
  delay(1000);
  digitalWrite(9, LOW);
  digitalWrite(13, HIGH);
  delay(1000);
  digitalWrite(13, LOW);
  digitalWrite(11, HIGH);
}