Which lamp colors are permitted at the rear of a vehicle?

The correct answer indicates that red, clear, and amber lamp colors are permitted at the rear of a vehicle. This is aligned with standard vehicle lighting regulations, which designate specific colors for different functions to ensure safety and visibility on the road.

Red lights are specifically required for taillights and brake lights, signifying that a vehicle is stopped or slowing down. Clear or white lights can be used for reverse lights, which help indicate to others that the vehicle is backing up. Amber lights may be used for turn signals or hazard lights. These colors are universally recognized and help communicate the vehicle's intentions to other drivers effectively, enhancing road safety.

In contrast, other options include colors that do not meet typical safety regulations for vehicle lights. For instance, blue lights are usually restricted to emergency vehicles, while yellow and green are not standard colors for rear vehicle identification.