Philadelphia Drivers License Practice Test

The primary purpose of traffic signals is to manage the flow of traffic and ensure safety on the roadways. They are designed to control vehicle and pedestrian movements at intersections, thereby facilitating a systematic and orderly exchange of right-of-way. By using a color-coded system of lights—typically red, yellow, and green—traffic signals help convey important information to drivers and pedestrians, guiding them when to stop, proceed with caution, or go.

Effective traffic signal management helps minimize accidents, reduces the likelihood of confusion among drivers, and enhances overall traffic efficiency. For example, when a light turns red, it alerts vehicles to stop, while a green light indicates it is safe to move forward. This coordinated approach balances the needs of all road users, including cars, bicycles, and pedestrians, contributing to safer road conditions.

While regulating vehicle speed, providing directions, and notifying drivers of nearby schools are important aspects of overall road safety and traffic management, they do not encompass the fundamental role of traffic signals. Traffic signals specifically focus on traffic flow management and safety at intersections, which is why this choice is recognized as the correct answer.