void setup() {
  // put your setup code here, to run once:
  pinMode(4, OUTPUT); //rot auto
  pinMode(5, OUTPUT); //gelb auto
  pinMode(2, OUTPUT); //grün auto
  pinMode(17, OUTPUT); // rot fuß
  pinMode(16, OUTPUT); // grün fuß
}

void loop() {
  digitalWrite(4, HIGH);
  digitalWrite(16, HIGH);
  delay(15000);
  digitalWrite(16, LOW);
  digitalWrite(17, HIGH);
  delay(5000);
  digitalWrite(5, HIGH);
  delay(2000);
  digitalWrite(2, HIGH);
  digitalWrite(4, LOW);
  digitalWrite(5, LOW);
  delay(10000);
  digitalWrite(2, LOW);
  digitalWrite(5, HIGH);
  delay(4000);
  digitalWrite(5, LOW);
  digitalWrite(4, HIGH);
  delay(2000);
  digitalWrite(17, LOW);
  digitalWrite(16, HIGH);
}