A headlight is a powerful light source mounted on the front of a vehicle, such as a car or motorcycle. Its primary function is to illuminate the road ahead during low-light conditions, such as at night or in bad weather. Headlights help drivers see obstacles and other vehicles, enhancing safety on the road. Most modern vehicles use either halogen, LED, or xenon headlights. Halogen headlights are the traditional type, while LED headlights are more energy-efficient and have a longer lifespan. Xenon headlights produce a bright, white light and are often found in luxury vehicles. Properly functioning headlights are essential for safe driving.