On 27/03/2021 15:18, NY wrote:
"Dave Plowman (News)" wrote in message
...
In article ,
* alan_m wrote:
If factory fitted (and possibly self fitted) they must be working for a
MOT. There may be only one rear fog light (drivers side) although on
some cars there may be just a reflector on the passenger side without a
light.

It's a legal requirement in some countries that there is only one rear
fog. Presumably to avoid confusion with brake lights.

I wondered if that was the case, given that a lot of recent cars have
only one fog light. My previous cars had two white lights in the
clusters for reversing and two red lights for fog, but there was no bulb
in the nearside fog light - so I added one, on the grounds that (IMHO)
*all* front and rear lights should be in pairs, to define the car's
width. My current car has only one white light on the nearside (which is
a bugger when reversing at night and the offside of the road behind is
not lit) and only one red light on the offside. I tend to put my fog
light on when reversing at night, so both sides of the car (eg
walls/hedges that I'm reversing between) are lit up in either white or red.

I think the "some countries" are making a very serious safety error in
mandating only one foglight. I find in fog that it is essential that I
can see both rear lights (and fog lights do the same job in fog as tail
lights in clear conditions, in defining the width of the car when seen
from a distance) and so can judge (from the apparent spacing) how far
away the car is when all I can see of it are its fog light(s).


My ideal grouping of rear lights would be:

- indicator
- side
- fog
- reflector
- brake

I prefer:

Indicator
Reverse
Tail/fog
Reflector
Brake

There is no need for a separate tail and fog light, allowing a smaller
cluster - what is the point of a tail light when the fog lights are on?

Reverse to separate Indicator and Tail/Fog. Reflector to separate
Tail/Fog and Brake.