Tail lights are the red lights located at the back of a vehicle, such as a car or truck. They serve an important purpose by signaling to other drivers when the vehicle is stopping, turning, or reversing. Tail lights typically illuminate when the headlights are on, ensuring visibility during nighttime or low-light conditions. In addition to their primary function, tail lights often include features like brake lights and turn signals. The brake lights become brighter when the driver presses the brake pedal, alerting others that the vehicle is slowing down. Turn signals, on the other hand, blink to indicate which direction the driver intends to turn, enhancing safety on the road.