void setup() {
  // put your setup code here, to run once:
pinMode(1, OUTPUT);//lampu merah 1
pinMode(2, OUTPUT);//lampu 
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
}

void loop() {
  //jaln 1 
digitalWrite(1, HIGH);
digitalWrite(6, HIGH);
delay(1800);
digitalWrite(6, LOW);
digitalWrite(1, LOW);
delay(0);
digitalWrite(2, HIGH);
digitalWrite(5, HIGH);
delay(1000);
digitalWrite(5, LOW);
digitalWrite(2, LOW);
delay(0);
digitalWrite(3, HIGH);
digitalWrite(4, HIGH);
delay(1800);
digitalWrite(3,LOW);
digitalWrite(4, LOW);
delay(0);
}