Which exterior lights are not required to operate for vehicle compliance?

Auxiliary lights, which include various additional lighting options such as fog lights, off-road lights, or any other supplemental lighting, are not required for vehicle compliance under state inspection guidelines. While these lights can enhance visibility and safety, their operation is not mandated for a vehicle to pass inspection, as long as they are not explicitly prohibited by law.

In contrast, headlights, taillights, and turn signals are considered essential lighting components that must function properly for a vehicle to meet safety standards. These lights play critical roles in ensuring that a vehicle is visible to others and that the driver can communicate their intentions on the road. Their proper operation is essential for compliance with safety laws, hence their inclusion as requirements.