void setup() {
  // put your setup code here, to run once:
  for (int x=2;x<14;x++) {
    pinMode (x, OUTPUT); //mengungsikan pin 2 hingga 13 sebagai OUTPUT 
    digitalWrite(x, LOW);//mematikan semua lampu 
  }
  //menghidupkan lampu merah jalan Utara,Barat,Selatan,Timur
  digitalWrite(4, HIGH);
  digitalWrite(7, HIGH);
  digitalWrite(10, HIGH);
  digitalWrite(11, HIGH);
  delay(2000);
}

void loop() {
  // put your main code here, to run repeatedly:
  Jalan_Utara ();
  delay (1000);
  Jalan_Barat ();
  delay (1000);
  Jalan_Selatan ();
  delay (1000);
  Jalan_Timur ();
  delay (1000);
}
void Jalan_Utara(){
  digitalWrite (4,LOW);
  digitalWrite (2,HIGH);
  delay (5000);
  digitalWrite (2, LOW);
  digitalWrite (3, HIGH);
  delay (2000);
  digitalWrite (3, LOW);
  digitalWrite (4, HIGH);
}
void Jalan_Barat(){
  digitalWrite (7, LOW);
  digitalWrite (5, HIGH);
  delay (5000);
  digitalWrite (5, LOW);
  digitalWrite (6, HIGH);
  delay (2000);
  digitalWrite (6, LOW);
  digitalWrite (7, HIGH);
}
void Jalan_Selatan(){
  digitalWrite (10, LOW);
  digitalWrite (8, HIGH);
  delay (5000);
  digitalWrite (8, LOW);
  digitalWrite (9, HIGH);
  delay (2000);
  digitalWrite (9, LOW);
  digitalWrite (10, HIGH);
}
void Jalan_Timur(){
  digitalWrite (11, LOW);
  digitalWrite (13, HIGH);
  delay (5000);
  digitalWrite (13, LOW);
  digitalWrite (12, HIGH);
  delay (2000);
  digitalWrite (12, LOW);
  digitalWrite (11, HIGH);
}