What color can parking lights legally be?

Parking lights are legally required to be either white or amber in color for a few important reasons related to visibility and safety. White lights are typically used for front-facing illumination, allowing vehicles to be seen by oncoming traffic, while amber lights are used for visibility to the rear and sides. These colors help convey the vehicle's presence and intentions to other motorists, especially in low-light conditions or during poor weather.

Using colors such as red, blue, or green would not comply with traffic regulations and could lead to confusion among drivers. Red lights are typically reserved for braking signals and emergency vehicles, blue lights are often used exclusively by law enforcement, and green lights can create ambiguity, as they are not standard for signal indication in vehicles. This standardization in light color promotes safety by ensuring all drivers have a clear and consistent understanding of a vehicle's status on the road.