What is the function of traffic signals?

The function of traffic signals is primarily to regulate vehicle and pedestrian traffic flow at intersections. These signals are essential for maintaining safety and order on the road by providing clear guidance to drivers and pedestrians on when to proceed and when to stop.

Traffic signals use distinct colors—red for stop, green for go, and yellow for caution—to communicate their messages effectively. This regulated timing helps prevent accidents, reduces confusion at busy intersections, and facilitates smoother traffic movement. By controlling the flow of traffic, signals help to ensure that vehicles and pedestrians can navigate crossings safely and efficiently, minimizing the risk of collisions and enhancing overall road safety.

While there are other tools and methods employed in traffic management, such as signage for road conditions or monitoring devices for speed limits, traffic signals specifically focus on directing the movement of traffic at intersections, thereby fulfilling a crucial role in urban traffic management.