int ledVermelho = 11;
int ledVerde = 7;
int ledAmarelo = 10;


int delayVerde = 3000;
int delayAmarelo = 1000;
int delayVermelho = 3000;


void setup() {
  // put your setup code here, to run once:
  pinMode(ledVermelho, OUTPUT);
  pinMode(ledVerde, OUTPUT);
  pinMode(ledAmarelo, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:

  digitalWrite(ledVerde, HIGH);
  delay(delayVerde);
  digitalWrite(ledVerde, LOW);

  digitalWrite(ledAmarelo, HIGH);
  delay(delayAmarelo);
  digitalWrite(ledAmarelo, LOW);

  digitalWrite(ledVermelho, HIGH);
  delay(delayVermelho);
  digitalWrite(ledVermelho, LOW);
}