An automotive lighting unit designed to emit a wide, flat beam pattern that cuts underneath fog, rain, or snow. Mounted below the primary headlights, these lights reduce glare reflecting back into the driver's eyes and illuminate the immediate road surface and lane markings.
Heard on the job
Check the relay, the left fog light isn't coming on when the low beams are active.
Do not mix it up with
- Fog lamp: Fog lights illuminate the road ahead for the driver, while fog lamps make the rear of the vehicle visible to drivers behind.