> Because somebody hit the button.
> However as she does not have a handbook**** I would be interested if BMW
> believe that front fogs are essential for BMW driving
> *** Most handbooks call them driving lights or additional lights and
> warn on their legal use - wondered if BMW states something similar
In the UK, fog lamps are just that - only to be used in conditions of poor
visibility, other than just darkness. Hence their low mounted position.
Driving or additional lamps are to supplement the main beam.

Signature
*Laugh alone and the world thinks you're an idiot.
Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.
Richard Sexton - 23 Oct 2006 06:19 GMT
>> However as she does not have a handbook**** I would be interested if BMW
>> believe that front fogs are essential for BMW driving
[quoted text clipped - 5 lines]
>visibility, other than just darkness. Hence their low mounted position.
>Driving or additional lamps are to supplement the main beam.
The difference is the beam pattern.
Dricig lights throw a concentrated beam stright down the road.
Fog lights throw a short but very wide beam.

Signature
Need Mercedes parts? http://parts.mbz.org
Richard Sexton | Mercedes stuff: http://mbz.org
1970 280SE, 72 280SE | Home pages: http://rs79.vrx.net
633CSi 250SE/C 300SD | http://aquaria.net http://killi.net
Steve Robinson - 23 Oct 2006 21:40 GMT
> In the UK, fog lamps are just that - only to be used in conditions of poor
> visibility, other than just darkness.
Don't you hate drivers who don't know how to switch them off and drive ona
clear night with rear fog lights blazing...?
...and don't get me started on drivers who don't know how to engage the
handbrake at traffic lights and just hold the footbrake shining their high
level LED brake lights into my eyes!
Steve.
joe_tide - 23 Oct 2006 23:43 GMT
>> However as she does not have a handbook**** I would be interested if BMW
>> believe that front fogs are essential for BMW driving
[quoted text clipped - 5 lines]
> visibility, other than just darkness. Hence their low mounted position.
> Driving or additional lamps are to supplement the main beam.
I was hoping someone else would ask, but nobody has.
What is the purpose of fog lights in the rear? I assume it is just for
visibility.
Dave Plowman (News) - 24 Oct 2006 00:26 GMT
> I was hoping someone else would ask, but nobody has.
> What is the purpose of fog lights in the rear? I assume it is just for
> visibility.
Yes - and not only in fog. Very heavy daylight rain and heavy snow too.

Signature
*How come you never hear about gruntled employees? *
Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.
adder1969@yahoo.co.uk - 24 Oct 2006 10:01 GMT
> > I was hoping someone else would ask, but nobody has.
>
> > What is the purpose of fog lights in the rear? I assume it is just for
> > visibility.
>
> Yes - and not only in fog. Very heavy daylight rain and heavy snow too.
In the UK, it's something like you should only use them if visibility
is less than 100 metres. Generally if I find it difficult to see the
car in front of me then I'll switch on my rear fogs *unless* the car
behind is close enough that I'm sure he/she can see me anyway.
Dave Plowman (News) - 24 Oct 2006 12:57 GMT
> > Yes - and not only in fog. Very heavy daylight rain and heavy snow too.
> In the UK, it's something like you should only use them if visibility
> is less than 100 metres. Generally if I find it difficult to see the
> car in front of me then I'll switch on my rear fogs *unless* the car
> behind is close enough that I'm sure he/she can see me anyway.
The purpose is to be seen. If you've established difficulty in seeing a
car ahead because of the poor conditions and it isn't using rear guard fog
lights, you should switch yours on - regardless of who or what is behind
you, as that is beyond your control. If in such conditions they dazzle the
driver behind, he's driving too close and should drop back - indeed in
poor weather many drive too close simply to keep 'in contact' with the
vehicle in front.

Signature
*Even a blind pig stumbles across an acorn now and again *
Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.
joe_tide - 24 Oct 2006 19:14 GMT
>> > Yes - and not only in fog. Very heavy daylight rain and heavy snow too.
>
[quoted text clipped - 10 lines]
> poor weather many drive too close simply to keep 'in contact' with the
> vehicle in front.
Trying to get educated since I never heard of rear fog lights until now:
What color are the fog lights front & rear? The ones here in the U.S. are
only on the front and they are white (clear).
I am assuming the rears are not white since that may indicate someone is
coming right at you (headlights).
Floyd Rogers - 24 Oct 2006 20:05 GMT
> "Dave Plowman (News)" <dave@davenoise.co.uk> wrote
>> The purpose is to be seen. If you've established difficulty in seeing a
[quoted text clipped - 11 lines]
> What color are the fog lights front & rear? The ones here in the U.S. are
> only on the front and they are white (clear).
They are a very bright red color. Most Porsches have them.
They are 2-3 times brighter than brake lights (which are about
twice as bright as taillights). Daniel Stern has particulars, I think
on his website.
FloydR
Dave Plowman (News) - 24 Oct 2006 23:54 GMT
> They are a very bright red color. Most Porsches have them.
> They are 2-3 times brighter than brake lights (which are about
> twice as bright as taillights). Daniel Stern has particulars, I think
> on his website.
In the UK, the actual bulbs are the same power as the brake lights. But of
course the design of the reflectors may give the impression they are
brighter. Some cars are only fitted with one - on the driver's side. They
are a safety aid when used as intended - in very poor visibility - but are
often abused and annoy following drivers.

Signature
*Why does the sun lighten our hair, but darken our skin?
Dave Plowman dave@davenoise.co.uk London SW
To e-mail, change noise into sound.
joe_tide - 25 Oct 2006 01:03 GMT
>> They are a very bright red color. Most Porsches have them.
>> They are 2-3 times brighter than brake lights (which are about
[quoted text clipped - 6 lines]
> are a safety aid when used as intended - in very poor visibility - but are
> often abused and annoy following drivers.
Thanks. That's very interesting and makes a lot of sense.