"You MUST use headlights when visibility is seriously reduced, generally when you cannot see for more than 100 metres (328 feet). You may also use front or rear fog lights but you MUST switch them off when visibility improves.".
Also question is, is it illegal to drive with front fog lights on?
Yes, the Road Vehicles Lighting Regulations 1989 prohibits the use of front and rear fog lights to dazzle other drivers when visibility is not reduced or when the vehicle is parked.
Also, do you use fog lights at night? Although it's not a legal requirement to use your fog lights if you're driving in fog, it's much safer to so that other motorists can see you. Never use your fog lights when visibility is clear though, especially at night when other drivers can easily be dazzled.
Furthermore, how important are front fog lights?
Fog Lamps. Fog lamps or lights are safety features in every car. They are designed to be used at low speed to add to the illumination directed to the surface and verges of the roads. Fog lamps are very important during poor visibility resulting from precipitations like rain, fog, dust or snow.
Are you supposed to use headlights in fog?
Heavy rain, snow, sleet or fog Any time your visibility is less than 150 metres because of heavy rain, for example, you'll want to use your low beams headlights. If you were to use your high beams in thick fog, for example, the light would get reflected back to you.
Related Question Answers
Can you use fog lights in heavy rain?
Fog lights are designed to be used when visibility is severely restricted, chiefly by fog, but also in other poor visibility conditions such as snow or heavy rain.Can fog lights be used as daytime running lights?
Luxury vehicles in particular usually come equipped with daytime running lights. Unlike fog lights, DRLs aren't meant to be used as a substitute for headlights. Though they are also typically located in the front and rear of your car, they are too dim to sufficiently light the road ahead.Do fog lights blind other drivers?
So fog lights attempt to help you by lighting up the lowest, closest portion of the roadway. So, driving lights WILL blind oncoming drivers, and they should be used just as high beams are used: on remote roads when there's no oncoming traffic.Are front fog lights part of the MOT?
Front fog lights aren't a legal requirement. In fact, many models of car don't actually have front fog lights so if you've got a front bulb out don't panic! However, the rear fog lights are required to work in order to pass your MOT so check them before you bring your car in.Is fog lights the same as high beam?
The main differnence between high beams and fogs is the direction the light is directed. High beams send light directly forward. In fog this light is reflected directly back at you so you see a opaque relection. Fog lights direct the light low and down so the objects in front of you are illuminated, not the fog.Can fog lights be on all the time?
Hard for oncoming drivers Wilson says fog lights have their purpose, but some people leave them on all the time either due to not knowing better or laziness. "Fog lights are designed to increase visibility during low-visibility situations, like fog or hard snow. There is a wide-beam pattern to light up the road.Are front fog lights mandatory?
The Highway Code states that: "You must use headlights when visibility is seriously reduced…..You may also use front or rear fog lights but you must switch them off when visibility improves." Foglights point directly at the road in front of the car so do not reflect glare back from the fog itself.How do I know if my car has fog lights?
There will be a symbol for your fog lights on your car's dashboard or on the actual button. Usually, the indicator for the rear fog lights is amber and the light for the front fog lights is green.Is it illegal to have led fog lights?
It is, in fact, illegal to drive with your fog lights on." The cause of the hazard, Younger says, with fog lights is they can blind others because they are more intense than regular headlights. He adds, it is also illegal to drive with mounted LED light bars that are turned on.What color is best for fog lights?
And, that's why fog lights with yellow color are preferred by car drivers, especially in bad weather conditions. Yellow color is less frustrating for the eyes than blue or white shades. The purpose behind using selective yellow light is to improve the visibility.Are fog lights useless?
Since fog lights are aimed low, and many of them use selective yellow light, they are relatively useless when the driving conditions are good. The catch is that fog lights, unlike main beam headlights, only illuminate the ground immediately in front of your vehicle. Why do some cars not have fog lights?
They weight the overall distribution of light closer to the car, so the driver's perception of glare from the norm Most front fog lights are completely useless. They provide an inadequate spread of light, aren't aimed properly, and don't improve the driver's vision.Why do fog lights come on when turning?
Why do new vehicles fog lights come on when they turn left or right? The illumination pattern of the fog lights provides somewhat better visibility to the side of the vehicle, close-in, than the standard low- or high-beam headlights.How far should fog lights shine?
Fog lights should be mounted on the lower half of your front end. Somewhere on or below the bumper is ideal. They should be around 10 to 24 inches above the ground or at least below your vehicle's headlights. But with fog lights, lower is better.Are yellow fog lights better?
So despite what you may read online, yellow fog or driving lights can actually improve a night drive, especially in bad conditions. Not because they have a greater range or penetrate fog to a greater degree, but because yellow light is easier for our eyes to process, providing better definition.What is the use of rear fog lights?
Rear fog lights are designed to provide a powerful and concentrated beam of red light that can penetrate fog and heavy rain, which will make your car visible to drivers behind you. Some cars are designed with one or two rear fog lights.When it foggy What lights do you use?
Use your low beams. The visibility in front of you will sharply decrease in a fog, so use the vehicle's low beam lights (if the vehicle does not have fog lights or driving lights). Heavy fog conditions prohibit use of high beam headlights. The light from high beam headlights will be reflected back by thick fog.Are driving lights legal?
No more than four driving lamps may be fitted to a vehicle; All driving lamps must not interfere with the driver's field of view; All forward-mounted fixed additional lights will be considered driving lights.”Why is it bad to leave rear fog lights on when not needed?
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. 
