What is the primary purpose of traffic signals?

The primary purpose of traffic signals is to regulate traffic flow and ensure safety. Traffic signals play a critical role in managing the movement of vehicles and pedestrians at intersections. By controlling when vehicles can go or stop, signals help to prevent accidents and reduce congestion.

Effective traffic signal operation allows for an orderly flow of traffic, which is essential in busy urban areas where multiple roads intersect. The signals communicate essential information to drivers about when to proceed, stop, or yield, therefore minimizing the potential for collisions. In essence, they create a predictable environment for all road users, contributing to safer roadways.

While some might think of traffic signals as mere decorations or tools for providing roadside information, their essential function is fundamentally about enhancing safety and efficiency in traffic systems.