217Using fog lights

217 Using fog lights (1) The driver of a vehicle fitted with front fog lights or rear fog lights must not operate the fog light unless the driver is driving in fog or other hazardous weather conditions causing reduced visibility. front fog light means a light (other than a headlight) fitted to the front of a vehicle to improve illumination of the road in fog, snowfall, heavy rain or dust clouds. rear fog light means a light (other than a brake light, a tail light, a numberplate light or a reversing light) fitted to the rear of a vehicle to make the vehicle more easily visible from the rear in fog, snowfall, heavy rain or dust clouds.