A tail light is a crucial safety feature on vehicles, designed to illuminate the rear of the car when the headlights are on or when the brakes are applied. It typically consists of red lights that signal to other drivers when the vehicle is slowing down or stopping. Tail lights help prevent accidents by making the vehicle more visible, especially in low-light conditions. Tail lights are usually part of a larger lighting system that includes brake lights, turn signals, and reverse lights. They are often made with durable materials to withstand various weather conditions and are required by law in most countries to ensure road safety.