When it's foggy right? Well yes, but I wonder how many people know when its foggy?

By that I mean, what is the visibility limit for fog as opposed to mist?

Driving in adverse weather conditions (226-237)

226

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 (see Rule 236).

236

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.

Driving in adverse weather conditions (226-237)

226

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 (see Rule 236).

236

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.

Must remember to take my tape measure with me next time it looks a bit foggy.....

Shame the bloody chavs don't know the highway code , I hate the idiots driving around with fogs on,even during the day!!!

Would you consider visibility seriously reduced when it foggy? ( or for example when fog boards are correctly illuminated on the motorway )

Shame the bloody chavs don't know the highway code , I hate the idiots driving around with fogs on,even during the day!!!

When I'm in Essex.

The general rule of thumb I use is can I see the cars in front tail lights easily when I am a safe distance behind them? If I can then a rear fog light will only serve to blind the driver behind, if the fog is thick or patchy enough to obscure the tail lights then it's time to turn the rear fog lights on.

They are ONLY there to make your car visible in difficult conditions (this does not mean when it's fekkin raining ). Front fog lights should be used when the car's headlights are giving too much scatter and the light is bouncing back off the fog blinding you, this can often mean (with xenon's etc) you can see better with your dipped beam turned off and front fog lights turned on, unfortunately some manufacturers (VAG for one) have them wired so the front fog's have to be on before the rear fog lights can be turned on.

When on motorway and it's chucking down and the spray is bad I'll put on my fogs front n rear better safe than sorry but remember to switch em of when you can see the car infront

Rarely use my front fogs and I only use the rear to test It's still working.

Driving in adverse weather conditions (226-237)

226

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 (see Rule 236).

236

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.

I just wish someone (the police?) would tell that to all the chavs and Audi drivers in my neck of the woods

Not just audi drivers( tar & brush) it's as if they have not read the highway code broad daylight with sidelights and front fogs on? Do they think it a great look, well it's a look but I wouldn't say it was great, even on a moonlight night they'll have the fogs on !!! Crazy

Btw it is official fog when visibility is reduced by suspended water molecules in the air to less the 1000m - 1000m plus and it's mist

broad daylight with sidelights and front fogs on? Do they think it a great look, well it's a look but I wouldn't say it was great, even on a moonlight night they'll have the fogs on !!! Crazy

It does however make it easy to spot who are (some of) the idiots

Too true you can see then coming , excuse the pun!!

I just wish someone (the police?) would tell that to all the chavs and Audi drivers in my neck of the woods

Perhaps the latest copy of the highway code should accompany every new car sold.

Would like to see the police enforce it more but I guess too many people would moan they should be catching "real" criminals. Saying that, it's not just highway code, it is actually an offence. Your choice, if you admit they're on then you're just breaking that law and need to pay the fine, if you pretend you didn't know they were on then they can actually have you appear at court for driving without due care and attention.

Fog lights are there to help you see better in the fog, they're just there to help make your car more visible, so as others have said if you can see the car ahead / behind you then they car see you and you can turn your fog lights off. Have to chuckle at the idiots that sit if foggy traffic bumper to bumper and leave their fog lights on. Numpties.

+ 1 on the last post, especially the last bit

I've always found modern front fog lights to have a very limited illumination depth in fog ( but do give a wider view close to the car) . For that reason they are are only of use to the driver for driving at quite slow speeds ( not 70mph !) in order to keep a reasonable reaction/braking distance in front .

IMHO the fog lights on modern cars are nowhere near as good as the lighting from the old separate fog lights that could be fitted to the old chrome bumbers.

One of my pet hates is 4X4 drivers with high rear fog lights stopping in front of me at traffic lights with their brake and fog lights on .

Edited 10 September, 201114 yr by vwcabriolet1971

When on motorway and it's chucking down and the spray is bad I'll put on my fogs front n rear better safe than sorry but remember to switch em of when you can see the car infront

That's not better safe than sorry, it produces a dazzling sea of red light scattered by water.

That's not better safe than sorry, it produces a dazzling sea of red light scattered by water.

+1

It actually makes matters worse if you have to brake, as your brake lights will not stand out anywhere near as much, meaning your desired effect could possibly be reversed if you have someone running into the back of you because they failed to see the brake lights come on.

Ive read threads like this before and they really do make me laugh. "FOGS DAZZLE OTHER DRIVERS!" I certainly im not one of these people who puts there fogs on in a bright summers day to highlight how cooool I am. But with the other drivers that do! I couldnt care less!! It does not dazzle me in the slightest and if they want to put them on the middle of the day when the suns beaming down then fine. If anything they look more stupid that they have them on for that reason! Even when its very dark and the skys are clear and people have there fogs on, does it dazzle me?? NO! Not in the slightest!

What does dazzle me, is people who do not have there headlights aligned, STUPID DRL'S!! People who leave there full beams on, Xenon kits and people who stick bluey greeny white H.I.D's. But does a standard halogen bulb below the bumper dazzle me ummmmmmmmmmm no..... The rear fog though thats a diffrent story am sure the bulbs harness the power of the sun!!

Well I've changed the bulbs up front as most of us have done with ultra H7 xenon filled and LEDs DRLS so she should be a bit like a nightsun on a heli

Ive read threads like this before and they really do make me laugh. "FOGS DAZZLE OTHER DRIVERS!" I certainly im not one of these people who puts there fogs on in a bright summers day to highlight how cooool I am. But with the other drivers that do! I couldnt care less!! It does not dazzle me in the slightest and if they want to put them on the middle of the day when the suns beaming down then fine. If anything they look more stupid that they have them on for that reason! Even when its very dark and the skys are clear and people have there fogs on, does it dazzle me?? NO! Not in the slightest!

There's the thing: everyone's eyes see differently: SWMBO cannot see the flicker of LED taillights, but it drives me mad.

There's the thing: everyone's eyes see differently: SWMBO cannot see the flicker of LED taillights, but it drives me mad.

I agree 100% I was behind A new golf gti very lovely car, and the tailights were flickering which was distracting. But mercedes led lights seem to flicker all the time for me more than any other car

I too have never really understood the way in which incorrect use of front fog lights generates some real anger!

I think I've only ever used my front fog lights twice. One of those was to see if they worked, the other was in very thick fog but they made no difference!

With them being mounted close to the road surface and aimed low I've never been dazzled by front fog lights. However it would seem as mentioned above different peoples eyes are more or less sensitive than others.

At night when a car approaches me with their front fogs on they are always less bright than their dipped headlights. Even when the road is wet the reflection is not as bright normal headlights.

I'm dazzled more by xenon’s, incorrectly adjusted halogens and people not turning off main beam before coming into view than anyone’s front fogs.

I'm guessing it’s the very fact that they shouldn't be driving with them on more than the fact they are dazzling that causes the real upset...