What color must clearance lamps on the front of a vehicle be?

Clearance lamps on the front of a vehicle must be amber. This requirement is part of vehicle lighting regulations, which specify that front clearance lamps need to be a certain color to enhance visibility and communicate the vehicle’s dimensions to other road users. Amber is chosen because it is distinct and easily noticeable during both day and night, making it an effective color for signaling.

In contrast, the other colors are designated for different lighting purposes: red is typically used for rear lights, as it indicates stopping or the presence of a vehicle from behind; green is generally not used in vehicle lighting within the context of regulations since it is commonly associated with other meanings, like traffic signals; blue is primarily used for emergency vehicles to signify urgency. Thus, amber clearance lamps serve a specific function in maintaining road safety and proper vehicle identification.