int REDCAR = 16;
int YELLOWCAR = 17;
int GREENCAR = 18;
int REDPED = 26;
int GREENPED = 27;
int BUTTON = 13;
int REDCAR2 = 21;
int YELLOWCAR2 = 22;
int GREENCAR2 = 23;
int crossTime=5000;
unsigned long changeTime;

void setup() {

  pinMode(REDCAR, OUTPUT);
  pinMode(YELLOWCAR, OUTPUT);
  pinMode(GREENCAR, OUTPUT);
  pinMode(REDPED, OUTPUT);
  pinMode(GREENPED, OUTPUT);
  pinMode (BUTTON, INPUT);
  pinMode (GREENCAR2, OUTPUT);
  pinMode (YELLOWCAR2, OUTPUT);
  pinMode (REDCAR2, OUTPUT);

  digitalWrite(GREENCAR, HIGH);
  digitalWrite(REDPED, HIGH);
  digitalWrite(REDCAR2, HIGH);
  digitalWrite(REDCAR, LOW);
  digitalWrite(YELLOWCAR, LOW);
  digitalWrite(GREENPED, LOW);
  digitalWrite(GREENCAR2, LOW);
  digitalWrite(YELLOWCAR2, LOW);
}

void loop() {
  int state= digitalRead(BUTTON);
  if (state == HIGH && (millis() - changeTime))
    changeLights();
  }


void changeLights () {


digitalWrite(GREENCAR, LOW);
digitalWrite(YELLOWCAR, HIGH);
delay(2000);

digitalWrite(YELLOWCAR, LOW);

digitalWrite(REDCAR, HIGH);
digitalWrite(GREENPED, HIGH);
digitalWrite(GREENCAR2, HIGH);
digitalWrite(REDCAR2, LOW);
digitalWrite(REDPED, LOW);
delay(crossTime);

for (int x=0; x<10; x++) {
  digitalWrite(GREENCAR2, LOW);

  digitalWrite(GREENPED, LOW);
  delay(100);
  digitalWrite(GREENPED, HIGH);
  delay(100);

  digitalWrite(YELLOWCAR2, HIGH);

}
  digitalWrite(YELLOWCAR2, LOW);
  digitalWrite(GREENPED, LOW);
  
  
  
{
digitalWrite(REDCAR, LOW);
digitalWrite(REDPED, HIGH);
digitalWrite(GREENCAR, HIGH);
digitalWrite(REDCAR2, HIGH);


changeTime = millis();
}
}