SparkFun - Traffic Light with Crossing

1int button = 7;
2int buttonState = 0;
3int red = 3;
4int yellow   = 4;
5int green = 5;
6
7void setup() {
8
9    pinMode(red, OUTPUT); //   red led
10    pinMode(yellow, OUTPUT); // yellow led
11    pinMode(green, OUTPUT);   // green led
12    pinMode(button, INPUT); // button
13    
14}
15
16
17
18//   Main/Loop Function
19void loop(){
20 if (digitalRead(button) == HIGH){
21        if   (digitalRead(button) == HIGH) {
22            // if the button pressed, stop traffic
23             lightCycle();
24        }
25 }
26    else { // If the button is off,   traffic goes on
27      digitalWrite(green, HIGH);
28      digitalWrite(yellow,   LOW);
29      digitalWrite(red, LOW);
30    }
31 }
32 
33
34void lightCycle(){
35   
36  // Turns green off, Yellow on 
37  delay(2000);
38  digitalWrite(green,   LOW);
39  digitalWrite(yellow, HIGH);
40  digitalWrite(red, LOW);
41  delay(3000);
42
43
44   // Turns yellow off, Red on
45  digitalWrite(green, LOW);
46  digitalWrite(yellow,   LOW);
47  digitalWrite(red, HIGH);
48  delay(8000);
49}

1int button = 7;
2int buttonState = 0;
3int red = 3;
4int yellow  = 4;
5int green = 5;
6
7void setup() {
8
9    pinMode(red, OUTPUT); //  red led
10    pinMode(yellow, OUTPUT); // yellow led
11    pinMode(green, OUTPUT);  // green led
12    pinMode(button, INPUT); // button
13    
14}
15
16
17
18//  Main/Loop Function
19void loop(){
20 if (digitalRead(button) == HIGH){
21        if  (digitalRead(button) == HIGH) {
22            // if the button pressed, stop traffic
23            lightCycle();
24        }
25 }
26    else { // If the button is off,  traffic goes on
27      digitalWrite(green, HIGH);
28      digitalWrite(yellow,  LOW);
29      digitalWrite(red, LOW);
30    }
31 }
32 
33
34void lightCycle(){
35  
36  // Turns green off, Yellow on 
37  delay(2000);
38  digitalWrite(green,  LOW);
39  digitalWrite(yellow, HIGH);
40  digitalWrite(red, LOW);
41  delay(3000);
42
43
44  // Turns yellow off, Red on
45  digitalWrite(green, LOW);
46  digitalWrite(yellow,  LOW);
47  digitalWrite(red, HIGH);
48  delay(8000);
49}