What is the main purpose of traffic signals?

The primary purpose of traffic signals is to manage traffic flow. Traffic signals are strategically placed at intersections and other locations to regulate the movement of vehicles and pedestrians. By providing specific instructions via red, yellow, and green lights, they help ensure that traffic moves safely and efficiently. This organized system of control reduces the likelihood of accidents, minimizes congestion, and facilitates smoother transitions through busy areas.

Monitoring speed, indicating weather conditions, and providing navigation assistance are important aspects of the driving environment, but they are not the primary function of traffic signals. Traffic signals focus on the control of traffic movements and ensuring compliance with road rules to enhance safety and vehicle coordination on the roads.