#define peopleRED 1
#define peopleGREEN 11
#define carRED 9
#define carGREEN 10
#define carYELLOW 8

void setup() {

}

void loop() {
  if (analogRead(A0)==1023) {
    delay(4000);
    digitalWrite(carYELLOW, HIGH);
    digitalWrite(carRED, HIGH);
    digitalWrite(carGREEN, LOW);
    delay(1000);
    digitalWrite(carRED, HIGH);
    digitalWrite(carGREEN, LOW);
    digitalWrite(peopleRED, LOW);
    digitalWrite(peopleGREEN, HIGH);
    digitalWrite(carYELLOW, LOW);
    delay(10000);
    digitalWrite(carRED, LOW);
    digitalWrite(carGREEN, HIGH);
    digitalWrite(peopleRED, HIGH);
    digitalWrite(peopleGREEN, LOW);
  } else {
    digitalWrite(carRED, LOW);
    digitalWrite(carGREEN, HIGH);
    digitalWrite(peopleRED, HIGH);
    digitalWrite(peopleGREEN, LOW);
    digitalWrite(carYELLOW, LOW);
  }
  delay(100);
}