What is one of the primary functions of a vehicle's brake lights?

A vehicle's brake lights serve the crucial function of alerting other drivers that the vehicle is slowing down or coming to a stop. This visibility is vital for preventing collisions, as it informs drivers behind that they need to reduce their speed or prepare to stop as well.

When the brake pedal is engaged, the brake lights illuminate, providing a clear and universal signal on the road. This communication is essential, especially in heavy traffic or during poor weather conditions where stopping distance may be affected. Understanding the proper function of brake lights enhances overall road safety by fostering awareness among drivers, thus helping to reduce the risk of rear-end collisions and improving the flow of traffic.