Rule 236 of the Highway Code states: "You MUST NOT use front or rear fog lights unless visibility is seriously reduced as they dazzle other road users and can obscure your brake lights.
The only times you should use your fog lights and how to avoid £50 fine As the UK is blanketed with a thick layer of fog, it's crucial drivers are up to speed with how to keep themselves and other drivers safe.
Under the Road Vehicles Lighting Regulations 1989, it is prohibited to use front or rear fog lights to dazzle other drivers when visibility is not reduced or when the vehicle is parked.
If you have limited visibility while driving and think you need to turn on your fog lights, the RAC states that they should only be used when you can't see past 100 metres (328 feet), which is roughly the length of a football pitch.
The most important are the rear lights, and the RAC noted that front fog lights should only ever be used in "severely restricted conditions".