What color are clearance lamps mounted on the rear or near the rear of a vehicle required to be?

Clearance lamps that are mounted on the rear or near the rear of a vehicle are required to be red. This requirement is based on safety standards to ensure visibility and recognition of a vehicle's size and position on the road. Red lights are commonly associated with the rear of vehicles, as they signify stop or caution, thus enhancing safety for both the driver and other road users. These clear visual cues help in preventing accidents during low visibility conditions.

In contrast, options such as green, amber, or blue serve different purposes within traffic and vehicle regulations. Green typically indicates go or can be associated with certain emergency vehicles, amber is often used for warning lights, and blue is associated with law enforcement vehicles. Therefore, using red for rear clearance lamps aligns with established standards for vehicle safety and public awareness.