#define RED 1
#define YELLOW 5
#define GREEN 9

void setup() {
  pinMode(RED, OUTPUT);
  pinMode(YELLOW, OUTPUT);
  pinMode(GREEN, OUTPUT);
  digitalWrite(RED, LOW);
  digitalWrite(YELLOW, LOW);
  digitalWrite(GREEN, LOW);
  Serial1.begin(9600);
  Serial1.println("Enter the match percentage with image of empty road");
}

void loop() {
  while (Serial1.available() == 0) {
    Serial1.setTimeout(3000);
    int match = 70;

    Serial1.println("Received match percentage: ");
    Serial1.print(match);

    digitalWrite(GREEN, HIGH);
    if (match < 20)
      delay(6000);
    else if (match >= 20 && match < 50)
      delay(4000);
    else if (match >= 50 && match < 75)
      delay(3000);
    else if (match >= 75 && match <= 100)
      delay(2000);

    digitalWrite(GREEN, LOW);
    digitalWrite(YELLOW, HIGH);
    delay(1000);

    digitalWrite(YELLOW, LOW);
    digitalWrite(RED, HIGH);
    delay(2000);

    digitalWrite(RED, LOW);
  }
}