What is the primary purpose of brake lights?

The primary purpose of brake lights is to inform drivers behind you that you are slowing down or stopping. This is crucial for maintaining safety on the road, as it allows other motorists to react accordingly. When a driver sees brake lights illuminated, they understand that the vehicle in front is decelerating or halting, which helps prevent rear-end collisions.

In the context of driving regulations and safe driving practices, clear communication between drivers is essential, and brake lights serve this function by providing a standardized signal that all drivers recognize. This visibility gives fellow drivers the time to adjust their speed and position, promoting a safer driving environment for everyone on the road.