I got stopped for driving with spot lights
because it's illegal when it's not foggy. I had them on because I was down a dark country lane and one of my headlights had blown
( sandettie light vessel automatic New Twitter - @bollocksreally, Fri 16 Oct 2009, 14:08, 1 reply)

Hmm
While I'd do exactly the same in your position, technically it's illegal to drive a vehicle with a malfunctioning light bulb, even in daytime. You're supposed to carry spares so you can fit a new bulb if one blows.

Fine in theory, but modern cars have so little room to work that it's a hard enough job fitting a light bulb on a dry warm day, far less at the side of a dark country road in pissing rain.

Rear fog lights, on the other hand, should have an interlock to prevent the car being driven above about 30mph when they're switched on. If it's foggy enough to need rear foglights, the visibility's not good enough to drive at 80mph, like a lot of twunts I see.
( K2k6 has a proper job these days, Fri 16 Oct 2009, 14:18, closed)