Which of the following is a key reason to use brake lights?

Using brake lights is essential primarily to alert drivers when slowing down or coming to a stop. This communication is crucial for maintaining safety on the road, as it gives drivers behind the vehicle a clear indication that they need to decrease their speed or prepare to stop. Proper use of brake lights helps to prevent rear-end collisions by making the actions of the vehicle predictable and visible to others.

While indicating turning intentions, enhancing visibility at night, and signaling lane changes are important aspects of safe driving, they do not fulfill the primary function of brake lights. Turning signals are designated for indicating turns, headlights or reflective gear improve visibility in low-light conditions, and lane change signals communicate a driver’s intention to move into another lane. Each of these functions is handled by different lights on a vehicle, demonstrating the specific and critical purpose of brake lights in signaling that a vehicle is decelerating or stopping.