The rear bumper light, also known as the rear fog light, is a red light located on the back of a vehicle. It is designed to improve visibility in adverse weather conditions, such as heavy rain, fog, or snow.
The rear bumper light is typically more powerful than the standard brake lights and is positioned lower on the vehicle to help other drivers see the car in front of them when visibility is reduced. It is especially helpful in situations where the car is driving slowly or has come to a stop, as it can help prevent rear-end collisions.
In some countries, it is mandatory for vehicles to have a rear bumper light, while in others, it is optional. Regardless, it is an important safety feature that can help prevent accidents and keep drivers and passengers safe on the road.