I agree that improper use is annoying, however, no-one has pointed out that a car travelling in the opposite direction in the fog is significantly more visible with front fog lights on. The only reason I use mine is to be seen on the fog.

Had all my front lights on in fog/snow last winter. Still got my mirror whacked by an oncoming vehicle.

I still use my foglights as ditchfinders on dark twisty roads in foul weather. I switch them off when on main roads. Never found them to be much use in actual fog.

I believe its been said on here before, if someone uses fog lights the car should be limited to 30mph. In 11 years of driving I can only think of a single time that front fogs would have been useful. Rears several times a year but then always turn them off in traffic.

Same goes fo those people that keep their foot on the brake in queuing/stopped traffic. I realise that some cars make it difficult to use the handbrake nowadays but still. Perhaps the brake peddle should shake if a car is stopped for more than 10 + seconds.

Glakit's one of the few people to appreciate the use of fogs is to be seen, rather than to see. I've never understood why manufacterers aren't forced to have both front and rear operating at the same time. After all, if conditions justify their use, as per the highway code, then both sets must be needed. I've yet to see fog that only exists in front of my car but not behind... The old arguments will continue about front fogs aiding visibility. I've never understood that one as they only illuminate the verges immediately to the side of the car and I'm not looking there when I drive. I was always taught that fog lights are a high intensity light without a directional beam. An analogy might be that if I stand one one side of a field in the dark and light a flare, you'll see it from the other side of the field, but I wouldn't see you.

A situation where I would use front foglights only: At the head of a queue of cars trundling through thick fog at 10 mph (brain dead chavs who overtook me at 65, convinced that it is safer to go faster and oblivious of the "fog clearing" slipstream effect of my car, are already upturned in a ditch some distance ahead). I have less than 100m visibility ahead but as I am constantly being tailgated, I switch off my rear fogs out of courtesy but stamp on the brakes every 15 seconds to increase distance from the tailgaters.

A situation where I would use rear foglights only: 3pm on a bright Saturday afternoon and I'm popping half a mile up the road to the offy to buy fags in my partner's car and I have no idea where any of the controls are or how they work; in fact it's a miracle I managed to find the seatbelt and put it on. On my way back I will get lost and will then mistake the rear foglight warning light for low fuel and will misfuel and blow the engine up.