front fogs are illegal when visibility is >100m. I dont think rear fogs are illegal at any visibility range.
However, the fogs on my car will only come on front first, then rear. Seems a bit strange
Nope, both sets are illegal if vis is above 100m, as Ceathreamhnan pointed out. AFAIK the rear ones are illegal as they often mask the brake lights, resulting in people not seeing people braking and more rear-end shunts. The front ones I think are to do with many of them being undirected and often dazzling oncoming traffic. Whats odd is that in my old micra it used to be the rear lights first then rear+front.
I have a feeling its the red rear hi intensity lights Zpyder is talking about, but of course its equally illegal to use the front ones as well, as so many fannies do year round.
Nope its the front ones that annoy me. I find the argument of them helping show things up in the road pointless as most people manage to make do without them, and it cracks me up as the kind of people that drive with them on tend to be the ones that think theyre good drivers.