#define redLed1Pin 2
#define yellowLed1Pin 3
#define greenLed1Pin 4
#define waitTimeYellow 2000
#define waitTimeRed 5000
#define waitTimeGreen 8000
#define waitTime 2000
#define on HIGH
#define off LOW
#define yellowDelay delay(2000);
void setup() {
  // put your setup code here, to run once:
    pinMode(redLed1Pin,OUTPUT);
    pinMode(yellowLed1Pin,OUTPUT);
    pinMode(greenLed1Pin,OUTPUT);
}
void traffic_light(){
    digitalWrite(greenLed1Pin, on);
    delay(waitTimeGreen);
    digitalWrite(greenLed1Pin,off);    
    yellow_blink();
    digitalWrite(redLed1Pin,on);
    delay(waitTimeRed);
    digitalWrite(redLed1Pin,off);
    delay(waitTimeRed);
}
void yellow_blink(){
    for (int i = 0; i < 2; i++) {
        digitalWrite(yellowLed1Pin, on);
        delay(1000);
        digitalWrite(yellowLed1Pin, off);
        delay(waitTimeYellow);
    }
}
void loop() {
  // put your main code here, to run repeatedly:
    traffic_light();
}