What color light must a tail lamp project to illuminate a license plate?

A tail lamp must project a white light to properly illuminate a license plate. This is important for visibility, especially during night or low-light conditions. The white light ensures that the license plate can be easily read by other drivers and law enforcement, complying with regulations that stipulate proper illumination for vehicle identification purposes.

Red light is typically used for tail lamps to indicate that a vehicle is stopped or moving slowly, but it does not provide the clear visibility required for license plates. Color choices like blue and yellow are generally associated with other vehicle lighting functions and are not used for illuminating license plates under standard traffic laws. Therefore, the requirement for a tail lamp to project white light is essential for safety and legal compliance on the road.