If a vehicle is equipped with fog lights, is it necessary for both to work for the vehicle to pass inspection?

The assertion that neither fog light is required for vehicle inspection is based on regulations that often do not mandate fog lights as a standard feature for legal operation, especially if the vehicle is not equipped with them as standard. Many vehicle inspection guidelines primarily focus on essential lighting that is necessary for safe operation, such as headlights, taillights, turn signals, and brake lights. Since fog lights are considered auxiliary lighting, their functionality might not be regulated in the same way as these primary lights.

In many jurisdictions, as long as a vehicle has the required basic lighting elements operational, it can pass inspection without the fog lights being functional. This holds true particularly if the vehicle's design did not make fog lights a standard feature.

In contrast, having both fog lights operational could enhance visibility in foggy conditions, but their absence or malfunction does not typically disqualify a vehicle from passing inspection, as they are categorized as optional or supplementary equipment rather than essential.