// Trafic Control System By Abhijit Kumar Bhagat
int r=2;
int g=3;
int y=4;
void setup() {
  pinMode(r, OUTPUT);
  pinMode(g, OUTPUT);
  pinMode(y, OUTPUT);
  digitalWrite(r, LOW);
  digitalWrite(g, LOW);
  digitalWrite(y, LOW);
  // put your setup code here, to run once:

}

void loop() {
  digitalWrite(g, HIGH);
  
  delay(5000);
  digitalWrite(g, LOW);
  digitalWrite(y, HIGH);

  delay(5000);
  digitalWrite(y, LOW);
  digitalWrite(r, HIGH);
  delay(5000);
  digitalWrite(r, LOW);

  // put your main code here, to run repeatedly:

}