//PROGRAM FOR TRAFFIC LIGHT
int red = 13;
int yellow = 12;
int green = 14;
int red1 = 15;
int yellow1 = 2;
int green1 = 4;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(red, OUTPUT);
  digitalWrite(red, LOW);
  pinMode(yellow, OUTPUT);
  digitalWrite(yellow, LOW);
  pinMode(green, OUTPUT);
  digitalWrite(green, LOW);
  pinMode(red1, OUTPUT);
  digitalWrite(red1, LOW);
  pinMode(yellow1, OUTPUT);
  digitalWrite(yellow1, LOW);
  pinMode(green1, OUTPUT);
  digitalWrite(green1, LOW);
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(1000); // this speeds up the simulation
  digitalWrite(red, HIGH);
  digitalWrite(green1, HIGH);
  delay(1000);
  digitalWrite(red, LOW);
  digitalWrite(green1, LOW);
  delay(1000);
  digitalWrite(yellow, HIGH);
  digitalWrite(yellow1, HIGH);
  delay(1000);
  digitalWrite(yellow, LOW);
  digitalWrite(yellow1, LOW);
  delay(1000);
  digitalWrite(green, HIGH);
  digitalWrite(red1, HIGH);
  delay(1000);
  digitalWrite(green, LOW);
  digitalWrite(red1, LOW);
  delay(1000);
}