Tail lights - rear fog lights

[es61@prism.gatech.edu (Eric Schumacher)]

Regarding the red rear fog lights in Europe.

I have found two differences in the use of rear lighting in Europe, both
of which I like.

1.  When drivers slow unexpectedly or excessively, they use their (yellow)
    hazards/flashers.  This is helpful - you know the guy in front of you
    is going slow and not just braking lightly.

2.  The rear fog light is really nice is heavy rain (some other southerner
    already mentioned this and in heavy snow.  In these situations, it is
    often difficult to see a car with only tail lights on.  Usually the rear
    fog light is only on one side or very low, so you can tell they are not
    brake lights.  Unfortunately, Americans have been getting them on European
    marques for the last few years and most do NOT know how to use them, or
    that the lights even exist.   Hence, I often see Volvos using their rear
    fog lights on a clear night.  

Eric Schumacher
es61@prism.gatech.edu