#define g_ledpin 13
#define y_ledpin 12
#define r_ledpin 11

void setup() {
     // Set all LED pins as output
  pinMode(g_ledpin, OUTPUT);
  pinMode(y_ledpin, OUTPUT);
  pinMode(r_ledpin, OUTPUT);

}

void loop() {
  
  // Green LED ON for 1 second
  digitalWrite(g_ledpin, HIGH);
  digitalWrite(y_ledpin, LOW);
  digitalWrite(r_ledpin, LOW);
  delay(1000);
  
  // Yellow LED ON for 0.2 seconds
  digitalWrite(g_ledpin, LOW);
  digitalWrite(y_ledpin, HIGH);
  digitalWrite(r_ledpin, LOW);
  delay(200);

  // Red LED ON for 1 seconds
  digitalWrite(g_ledpin, LOW);
  digitalWrite(y_ledpin, LOW);
  digitalWrite(r_ledpin, HIGH);
  delay(1000);


}