// Define the LED pins
const int redLed = 6;    // Red LED pin
const int yellowLed = 4; // Yellow LED pin
const int greenLed = 2;  // Green LED pin

// Define the timing for each light (in milliseconds)
const int redTime = 5000;    // Red light duration (10 seconds)
const int yellowTime = 2000;  // Yellow light duration (2 seconds)
const int greenTime = 4000;   // Green light duration (8 seconds)

void setup() {
  // Initialize the LED pins as outputs
  pinMode(redLed, OUTPUT);
  pinMode(yellowLed, OUTPUT);
  pinMode(greenLed, OUTPUT);
}

void loop() {
  // Red light on
  digitalWrite(redLed, HIGH);
  delay(redTime);

  // Red light off, Yellow light on
  digitalWrite(redLed, LOW);
  digitalWrite(yellowLed, HIGH);
  delay(yellowTime);

  // Yellow light off, Green light on
  digitalWrite(yellowLed, LOW);
  digitalWrite(greenLed, HIGH);
  delay(greenTime);

  // Green light off, Yellow light on
  digitalWrite(greenLed, LOW);
  digitalWrite(yellowLed, HIGH);
  delay(yellowTime);

  // Yellow light off, loop will restart with red light
  digitalWrite(yellowLed, LOW);
}