What is the primary purpose of traffic signals?

The primary purpose of traffic signals is to control the flow of traffic. Traffic signals are strategically placed at intersections, crosswalks, and other critical points on roadways to manage the movement of vehicles and pedestrians, thereby improving safety and efficiency on the roads. By providing clear instructions to drivers and pedestrians through red, yellow, and green lights, traffic signals help organize traffic, reduce the chances of accidents, and facilitate smoother travel through busy areas. This organization is crucial in preventing chaos at intersections, where multiple roads meet and where the risk of collisions is higher.

While there are other functions that traffic signals can serve, such as supporting routes for emergency vehicles, their fundamental role remains traffic control. The idea of enhancing aesthetic appeal or confusing drivers contradicts their essential purpose, which is to create a predictable and orderly traffic environment.