int Spin = A3;
int greenN1 = A0;
int yellowN1 = A1;
int redN1 = A2;
int orangePedN1 = 2;
int whitePedN1 = 3;
int greenE1 = A4;
int yellowE1 = A5;
int redE1 = A6;
int orangePedE1 = 4;
int whitePedE1 = 5;
int greenN2 = A8;
int yellowN2 =A9;
int redN2 = A10;
int orangePedN2 = 6;
int whitePedN2 = 7;
int greenE2 = A12;
int yellowE2 = A13;
int redE2 = A14;
int orangePedE2 = 8;
int whitePedE2 = 9;
int T1delay = 1000;  //1000
int T2delay = 9000;  //9000
byte state = 2 , transition;
void setup() {
    pinMode(Spin, INPUT);		   // input 
    Serial.begin(9600);
	pinMode(greenN1, OUTPUT);      // LED1 A0;  // zone 1 north south
	pinMode(yellowN1, OUTPUT);     // LED2 A1;  // zone 1 north south   
	pinMode(redN1, OUTPUT);        // LED3 A2;  // zone 1 north south
	pinMode(orangePedN1, OUTPUT);  // LED4 2;   // zone 1 north south
	pinMode(whitePedN1, OUTPUT);   // LED5 3;   // zone 1 north south
	pinMode(greenE1, OUTPUT);      // LED6 A4;  // zone 1 east west
	pinMode(yellowE1, OUTPUT);     // LED7 A5;  // zone 1 east west
	pinMode(redE1, OUTPUT);        // LED8 A6;  // zone 1 east west
	pinMode(orangePedE1,OUTPUT);   // LED9 4 ;  // zone 1 neast west
	pinMode(whitePedE1, OUTPUT);   // LED10 5;  // zone 1 east west
	pinMode(greenN2, OUTPUT);      // LED11 A8; // zone 2 north south
	pinMode(yellowN2, OUTPUT);     // LED12 A9; // zone 2 north south
	pinMode(redN2, OUTPUT);        // LED13 A10;// zone 2 north south
	pinMode(orangePedN2,OUTPUT);   // LED14 6;  // zone 2 north south
	pinMode(whitePedN2, OUTPUT);   // LED15 7;  // zone 2 north south
	pinMode(greenE2, OUTPUT);      // LED16 A12;// zone 2 east west
	pinMode(yellowE2, OUTPUT);     // LED17 A13;// zone 2 east west
	pinMode(redE2, OUTPUT);        // LED18 A14;// zone 2 east west
	pinMode(orangePedE2,OUTPUT);   // LED19 8;  // zone 2 east west
	pinMode(whitePedE2, OUTPUT);   // LED20 9;  // zone 2 east west
}
void loop() {
  switch(state) {
    case 1: // blinking Traffic
      if(digitalRead(Spin) == LOW) transition = 1;
Serial.println("state blinking Traffic");
Serial.println(transition);
    break;
    case 2: // start Traffic
      if(digitalRead(Spin) == HIGH) transition = 2;
Serial.println("state start Traffic");
Serial.println(transition);
    break;
  }
    switch(transition) {
    case 1: // blinking Traffic
Serial.println("start north/south Traffic zone 2");
    for (int x=0; x<12; x++){		
    digitalWrite(greenN1, LOW);    
    digitalWrite(yellowN1, LOW);    
    digitalWrite(redN1, HIGH);       
    digitalWrite(orangePedN1,HIGH);  
    digitalWrite(whitePedN1, LOW); 
    digitalWrite(greenE1, LOW);      
    digitalWrite(yellowE1, LOW);     
    digitalWrite(redE1, HIGH);       
    digitalWrite(orangePedE1, HIGH); 
    digitalWrite(whitePedE1,LOW);    
    digitalWrite(greenN2, LOW);      
    digitalWrite(yellowN2, LOW);     
    digitalWrite(redN2, LOW);      
    digitalWrite(orangePedN2,LOW);  
    digitalWrite(whitePedN2, LOW);   
    digitalWrite(greenE2, LOW);      
    digitalWrite(yellowE2, LOW);     
    digitalWrite(redE2, LOW);       
    digitalWrite(orangePedE2, LOW); 
    digitalWrite(whitePedE2,LOW);   
	  delay(250);
      digitalWrite(redN1, LOW);
	  digitalWrite(redN2, HIGH);
	  digitalWrite(redE1, LOW);
	  digitalWrite(redE2, HIGH);
	  digitalWrite(orangePedN1,LOW);
	  digitalWrite(orangePedN2,HIGH);
	  digitalWrite(orangePedE1,LOW);
	  digitalWrite(orangePedE2,HIGH);
      delay(250);	
       }
    transition = 1;
    state = 2;
	break;

    case 2:
Serial.println("start north/south Traffic zone 1");
 // start north/south Traffic zone 1     
    digitalWrite(greenN1, HIGH);    
    digitalWrite(yellowN1, LOW);    
    digitalWrite(redN1, LOW);       
    digitalWrite(orangePedN1,LOW);  
    digitalWrite(whitePedN1, HIGH); 
    digitalWrite(greenE1, LOW);     
    digitalWrite(yellowE1, LOW);    
    digitalWrite(redE1, HIGH);      
    digitalWrite(orangePedE1, HIGH);
    digitalWrite(whitePedE1,LOW);   
    delay(T1delay);  // Hold green light for 1 seconds
	 
Serial.println("start north/south Traffic zone 2");
// start north/south Traffic zone 2 
    digitalWrite(greenN2, HIGH);    
    digitalWrite(yellowN2, LOW);    
    digitalWrite(redN2, LOW);       
    digitalWrite(orangePedN2,LOW);  
    digitalWrite(whitePedN2, HIGH); 
    digitalWrite(greenE2, LOW);     
    digitalWrite(yellowE2, LOW);    
    digitalWrite(redE2, HIGH);      
    digitalWrite(orangePedE2, HIGH);
    digitalWrite(whitePedE2,LOW);   
    delay(T2delay);	//north/south run green for T2delay
	  
Serial.println("step 1 Turn north/south zone 1 Yellow");
//step 1 Turn north/south zone 1 Yellow
      for (int x=0; x<4; x++){      //flashing of pedestrian  //++x; increment x by one and returns the new value of x
    digitalWrite(greenN1, LOW);     
    digitalWrite(yellowN1, HIGH);      
    digitalWrite(redN1, LOW);       
    digitalWrite(orangePedN1, HIGH);
    digitalWrite(whitePedN1, LOW);  
      delay(250);
    digitalWrite(orangePedN1,LOW);  
      delay(250);
      }
Serial.println("step 2 Turn north/south zone 2 Yellow");
//step 2 Turn north/south zone 2 Yellow  
      for (int x=0; x<8; x++){		//flashing of pedestrian
    digitalWrite(greenN1, LOW);     
    digitalWrite(yellowN1, HIGH);    
    digitalWrite(redN1, LOW);       
    digitalWrite(orangePedN1, HIGH);
    digitalWrite(whitePedN1, LOW);  
    digitalWrite(greenN2, LOW); 	
    digitalWrite(yellowN2, HIGH); 	
    digitalWrite(redN2, LOW); 		
    digitalWrite(orangePedN2,HIGH); 
    digitalWrite(whitePedN2, LOW); 	
      delay(250);
    digitalWrite(orangePedN1,LOW);  
    digitalWrite(orangePedN2,LOW);  
      delay(250);
      }
Serial.println("step 3 Turn north/south zone 1 red and east/west zone 1 green");
//step 3 Turn north/south zone 1 red and east/west zone 1 green
      for (int x=0; x<4; x++){		//flashing of pedestrian
  digitalWrite(yellowN1, LOW);
  digitalWrite(yellowN2, HIGH);
  digitalWrite(redN1, HIGH);
  digitalWrite(redE1, LOW);
  digitalWrite(greenE1, HIGH);
  digitalWrite(whitePedE1, HIGH);
  digitalWrite(orangePedE1,LOW);
  digitalWrite(orangePedN1, HIGH);
  digitalWrite(orangePedN2, HIGH);
      delay(250);
    digitalWrite(orangePedN2,LOW);
      delay(250);
       }
Serial.println("step 4 Turn north/south zone 2 red and east/west zone 2 green");
//step 4 Turn north/south zone 2 red and east/west zone 2 green 
  digitalWrite(yellowN2, LOW);
  digitalWrite(redN2, HIGH);
  digitalWrite(redE2, LOW);
  digitalWrite(greenE2, HIGH);
  digitalWrite(whitePedE2, HIGH);
  digitalWrite(orangePedN2, HIGH);
  digitalWrite(orangePedE2, LOW);
	delay(T2delay); //east/west run green for T2delay
Serial.println("step 1 Turn east/west zone 1 Yellow");
// step 1 Turn east/west zone 1 Yellow
      for (int x=0; x<4; x++){      //flashing of pedestrian  
    digitalWrite(greenE1, LOW);     
    digitalWrite(yellowE1, HIGH);      
    digitalWrite(redE1, LOW);       
    digitalWrite(orangePedE1, HIGH);
    digitalWrite(whitePedE1, LOW);  
      delay(250);
    digitalWrite(orangePedE1,LOW);  
      delay(250);
      }
Serial.println("step 2 Turn east/west zone 2 Yellow");     
//step 2 Turn east/west zone 2 Yellow
      for (int x=0; x<8; x++){		//flashing of pedestrian
    digitalWrite(greenE1, LOW);     
    digitalWrite(yellowE1, HIGH);      
    digitalWrite(redE1, LOW);       
    digitalWrite(orangePedE1, HIGH);
    digitalWrite(whitePedE1, LOW);  
    digitalWrite(greenE2, LOW); 	
    digitalWrite(yellowE2, HIGH); 	
    digitalWrite(redE2, LOW); 		
    digitalWrite(orangePedE2,HIGH); 
    digitalWrite(whitePedE2, LOW); 	
      delay(250);
    digitalWrite(orangePedE1,LOW);  
    digitalWrite(orangePedE2,LOW);  
      delay(250);
      }
Serial.println("step 3 Turn east/west zone 1 red and north/south zone 1 green");
//step 3 Turn east/west zone 1 red and north/south zone 1 green
      for (int x=0; x<4; x++){		//flashing of pedestrian
  digitalWrite(yellowE1, LOW);
  digitalWrite(yellowE2, HIGH);
  digitalWrite(redE1, HIGH);
  digitalWrite(redN1, LOW);
  digitalWrite(greenN1, HIGH);
  digitalWrite(whitePedN1, HIGH);
  digitalWrite(orangePedN1,LOW);
  digitalWrite(orangePedE1, HIGH);
  digitalWrite(orangePedE2, HIGH);
      delay(250);
    digitalWrite(orangePedE2,LOW);
      delay(250);
       }
Serial.println("step 4 Turn east/west zone 2 red and north/south zone 2 green");
//step 4 Turn east/west zone 2 red and north/south zone 2 green 
  digitalWrite(yellowE2, LOW);
  digitalWrite(redE2, HIGH);
  digitalWrite(redN2, LOW);
  digitalWrite(greenN2, HIGH);
  digitalWrite(whitePedN2, HIGH);
  digitalWrite(orangePedE2, HIGH);
  digitalWrite(orangePedN2, LOW);
		delay(T1delay); //east/west run green for T1delay
    transition = 2;
    state = 1;
    break;
    }
}