Why is it dangerous to leave rear fog lights on after the fog has cleared?
Explanation: If your rear fog lights are left on when it isn’t foggy, the glare they cause makes it difficult for road users behind to know whether you’re braking or you’ve just forgotten to turn off your rear fog lights. This can be a particular problem on wet roads and on motorways.
What is the purpose of a rear fog light?
While not common in the U.S., rear fog lights are mandatory in Europe. Typically, the rear fog light is a bright red light that is the same brightness as your brake lights. The job of the rear fog lamp is to reveal the position of your vehicle when driving in the fog, snow or other conditions that limit visibility.
When to turn off front or rear fog lights?
You MUST NOT use front or rear fog lights unless visibility is seriously reduced (see Rule 226) as they dazzle other road users and can obscure your brake lights. You MUST switch them off when visibility improves.
Is it illegal to drive with fog lights on?
Keeping fog lights on when visibility is clear is hazardous for other motorists. Drivers following behind will be dazzled by the very bright rear fog light (s), particularly at night. It is illegal to drive with fog light on in clear weather conditions.
What should you do when driving in fog?
When driving in fog you should. use your lights as required (see Rule 226) keep a safe distance behind the vehicle in front. Rear lights can give a false sense of security. be able to pull up well within the distance you can see clearly.
When to use fog lights in foggy conditions?
Fog lights should be illuminated when visibility is around 100 metres or less. Using them in foggy conditions will of course increase safety. If your vehicle has rear fog lights only, it will increase your visibility for other motorists when turned on.
How important are rear fog lights?
The whole purpose of having rear fog lights (plural) is so that not only can other drivers see your vehicle from behind, from a much greater distance in fog, heavily-falling snow, thick smoke, heavy road spray or even sandstorms, but also – when there are two of the lights and not just one – they permit drivers behind you to gauge the distance between their vehicle and yours quite accurately.
How many rear fog lights should my car have?
The legal requirement (in the UK) is for there to be at least one, however where your car is fitted with two rear fog lights they should both light up, otherwise you could fail an inspection if the police decided to stop you.
Are fog lights a legal requirement?
Although it is a legal requirement to have fog lights fitted, there is no legal obligation to actually use them, even when it’s foggy. Fog lights should be illuminated when visibility is around 100 metres or less. Using them in foggy conditions will of course increase safety.
Where are the rear fog lights?
Rear fog lights are often placed on the left side of the vehicle. This lets other drivers know approximately where the vehicle is located in a travel lane. Some newer models, however, have rear fog lights on both sides to further improve visibility.