dg123 said:
Road Vehicles Lighting Regulations 1989
Front fog lamp: Manner of use prohibited:
(a) Used so as to cause undue dazzle or discomfort to other persons using the road.
Fair enough. Probably applies to all lights anyway. Also the point about foglights is that their beam pattern is (or should be) designed to work effectively in fog, which basically means low and flat to avoid reflecting back at the driver, and such a beam will not cause undue dazzle or discomfort to other persons using the road unless they are using it as a bed.
If you are dazzled by oncoming foglights, then either they are not actually foglights or they are seriously out of alignment.
(b) Used so as to be lit at any time other than in conditions of seriously reduced visibility.
I know I could look it up, but I can't ba @rsed - does the act define "seriously reduced visibility"? I often use my front fogs on unlit country lanes - I find them very useful for illuminating the road and the n/s verge when I have to avert my eyes down and to the left when a car is coming the other way, which I do for 2 reasons:
1) It means I don't look at the oncoming headlights - even dipped ones that don't dazzle will cause your pupils to contract, leaving you with poorer night vision once the car has passed.
2) It makes it easier to move as far to the left as possible.
(c) Used so as to be lit when a vehicle is parked.
Fair enough.
On a general note regarding rear fogs, somebody complained that one of the problems is that you lose discrimination with the brake lights. Many years ago, when rear fogs were never fitted as standard, there was an aftermarket product called, IIRC, "fogstop", which was a box of tricks (probably resistors) and higher wattage stop/tail lamps. When activated it gave you a brighter rear light and a correspondingly brighter brake light.
Shame they don't make cars with such a system.
dg123 said:
ban-all-sheds said:
So what assumptions do you make about what's on the other side of the hill you're driving up in the dark? Do you always slow down in case there is fog?
Never make assumptions. I slow down if visibility is reduced.
You have to make assumptions.
In the situation I describe, you either have to assume that there isn't a bank of fog over the brow of the hill, and not slow down, or you have to assume that there is, and slow down as you approach the brow.
It seems that you and I are never going to agree - I think it's a good idea to warn drivers of hazards ahead that they cannot see, or may not have seen, you think it should all be down to driver skill.
As admirable as increased driver skills are, no matter how perfectly
you drive, when
you've slowed down because
your skill and judgement has allowed
you to detect the presence of fog, do you want
your life to depend on everyone else having done the same?