Fog lights, also known as fog lamps, are small, block- or round-shaped lights located beneath the headlights on the front of your car. LED fog bulbs are angled in a particular way so that the light directly illuminates the road ahead of you instead of several feet off the ground as regular headlights do.
Fog light bulbs are designed for use at low speeds in fog, heavy mist, snow and other low visibility conditions. LED fog light bulbs are different from daytime running lights. Led fog lights are an extra pair of lights mounted low on the vehicle because fog doesn't settle on the road surface but hovers above it.