What is the common mounting height for clearance lamps on vehicles?

The common mounting height for clearance lamps on vehicles is as near the top as practicable. This positioning is crucial for ensuring that the lamps are visible from a distance and can effectively signal the vehicle's presence to other drivers, particularly in low-light conditions or adverse weather. By placing the clearance lamps high up on the vehicle, they are less likely to be obstructed by other structures or vehicles, enhancing visibility and safety on the road.

This standard is consistent with regulations that aim to minimize the risk of accidents by making vehicles more recognizable, especially larger vehicles that may have a higher profile. Consequently, other options that suggest mounting the lamps lower or in the center may compromise visibility and do not align with established safety guidelines.