#define RED1 2    // Red light for Road 1
#define YELLOW1 3 // Yellow light for Road 1
#define GREEN1 4  // Green light for Road 1
#define RED2 5    // Red light for Road 2
#define YELLOW2 6 // Yellow light for Road 2
#define GREEN2 7  // Green light for Road 2

void setup() {
    pinMode(RED1, OUTPUT);
    pinMode(YELLOW1, OUTPUT);
    pinMode(GREEN1, OUTPUT);
    pinMode(RED2, OUTPUT);
    pinMode(YELLOW2, OUTPUT);
    pinMode(GREEN2, OUTPUT);
}

void loop() {
    // Road 1 Green, Road 2 Red
    digitalWrite(GREEN1, HIGH);
    digitalWrite(RED2, HIGH);
    delay(5000);
    digitalWrite(GREEN1, LOW);
    digitalWrite(RED2, LOW);
    
    // Road 1 Yellow, Road 2 Red
    digitalWrite(YELLOW1, HIGH);
    digitalWrite(RED2, HIGH);
    delay(2000);
    digitalWrite(YELLOW1, LOW);
    digitalWrite(RED2, LOW);
    
    // Road 1 Red, Road 2 Green
    digitalWrite(RED1, HIGH);
    digitalWrite(GREEN2, HIGH);
    delay(5000);
    digitalWrite(RED1, LOW);
    digitalWrite(GREEN2, LOW);
    
    // Road 1 Red, Road 2 Yellow
    digitalWrite(RED1, HIGH);
    digitalWrite(YELLOW2, HIGH);
    delay(2000);
    digitalWrite(RED1, LOW);
    digitalWrite(YELLOW2, LOW);
}