How many fog lights must be operational for a vehicle to pass inspection if equipped with fog lights?

For a vehicle to pass inspection when equipped with fog lights, both fog lights need to be operational. The purpose of fog lights is to provide better visibility in adverse weather conditions, such as fog, rain, or snow. Having both lights functioning ensures that the driver has an adequately illuminated path without creating glare that can occur when only one fog light is used.

It's also critical to note that fog lights must be specifically aimed and utilized according to regulations. This means that a vehicle setup with inoperative fog lights could fail to provide the safety benefits they are intended for, thereby not fulfilling the requirements for passing an inspection.

In contrast, the notion that a vehicle could pass inspection with neither fog light working, or only one functioning, does not align with standard safety protocols. Similarly, any restrictions based solely on wattage would not pertain to the fundamental requirement of operational capability. The focus is on the presence and functionality of both lights to ensure optimal visibility and safety on the road.