Traffic Lights

Code

int LEDRed = 13; //NS red light 
int LEDYellow =12 ; //NS yellow ligh
int LEDGreen =11 ; //NS green light
int LEDRed2 =7 ; //EW red light
int LEDYellow2 =6 ; //EW yellow light
int LEDGreen2 =5 ; //EW green light

void setup() {
 pinMode (LEDRed, OUTPUT);
 pinMode (LEDYellow, OUTPUT);
 pinMode (LEDGreen, OUTPUT);
 pinMode (LEDRed2, OUTPUT);
 pinMode (LEDYellow2, OUTPUT);
 pinMode (LEDGreen2, OUTPUT);    
}
void loop() {  
  digitalWrite(LEDRed2, HIGH);//turns on EW red light
  digitalWrite(LEDGreen, HIGH);//turns on NS green light
    delay(10000);//makes the light on for 10 sec 
  digitalWrite(LEDGreen, LOW);//turns off NS green light
  digitalWrite(LEDYellow, HIGH);//turns on NS yellow light
    delay(3000);//makes the light on for 3 sec
  digitalWrite(LEDYellow, LOW);//turns off NS yellow light
  digitalWrite(LEDRed, HIGH);//turns on NS red light
    delay(2000);//makes the light on for 2 sec
  digitalWrite(LEDRed2, LOW);//turns off EW red light
  digitalWrite(LEDGreen2, HIGH);//turns on EW green light
    delay(10000);//makes the light on for 10 sec
  digitalWrite(LEDGreen2, LOW);//turns off EW green light
  digitalWrite(LEDYellow2, HIGH);//turns on EW yellow light
    delay(3000);//makes the light on for 3 sec
  digitalWrite(LEDYellow2, LOW);//turns off EW yellow light
  digitalWrite(LEDRed2, HIGH);//turns on EW red
    delay(2000);//makes the light on for 2 sec
  digitalWrite(LEDRed, LOW);//turns off NS red light
}
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Traffic Light Essay

Traffic lights are very helpful in everyday life to drivers and pedestrians, the timing of the lights have been fine tuned for each road that they are on. It would be very hard for people to get around without traffic lights. Traffic lights in different places are different and even the ones in canada and more specifically Ontario are different, with some having different properties. The pedestrian lights are also different and have different functions and properties.

The major reason why traffic lights are so helpful is because it makes traffic run a lot more smoothly and lower the chance of accidents. Before there were traffic lights there was a police officer who had to control the movement of traffic. This was difficult for police officers since they couldn’t handle changing the light of two different lanes. Traffic lights are now much faster than using police officers and is much safer for the cars and pedestrians. With the yellow light it also helps drivers even more since they can now have a better understanding for when to stop. Without traffic lights it would be much harder for people to get places and there would be more accidents.

There are a lot of traffic lights around the world and most of them are not the same. Some are vertical, horizontal, big, and small. Although they may look different they generally do the same thing with the same three lights and colours. The biggest difference of traffic lights in Canada are the traffic lights in Quebec. These traffic lights are horizontal and a big difference for driving is that you are allowed to turn right on a red lights. There also always four lights and the two end lights are red and the two middle lights are green and yellow. The pedestrian lights are also different all around the world with all different art styles.

The traffic lights in Ottawa have different properties like flashing green for left turns, walk/don't walk signals, and pedestrian buttons. When there is a flashing green light it tells drivers who are turning, and green flashing lights also mean green arrow. Walk/don’t walk signals are there to tell the pedestrians when to walk and when to not walk. These lights work with the main red, yellow, and green traffic lights to make sure that it is safe for the pedestrians to walk. The way the walk/dont walk lights know there is a person there is by having pedestrian buttons. These buttons allow the pedestrians to walk when they need to and make the lights change faster than they normally would. The last property I will talk about are traffic light sensors. These sensors allow the traffic lights to sense when there is a car in a certain position. Having these sensors allow traffic to run more smoothly and make it so someone is not waiting for a traffic light to turn green when no one is there.

Even though traffic lights are not perfect they are very beneficial to the movement and safety of drivers, and without these light there could be a lot more accident and even deaths.

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