Sucky-to-the-Max (tm) US Lights

[quk@isham-research.demon.co.uk (Phil Payne)]

In message <A27A61333D@agcom.tamu.edu> "Al Powell" writes:

> In contrast, the European lenses are designed to focus the light into 
> a much tighter pattern, projecting it down the road where it actually 
> does you some good.  The difference in illumination range has to be 
> seen to be believed!

They're also asymmetric, pushing more light along the edge of the road and 
deliberately away from oncoming traffic.  _DON'T_ try and use UK lights in the 
USA.

Part of the difference in perceived range is caused by the lack of upward 
scatter - the atmosphere is dirty, and needlessly illuminating the bit between 
you and the road reduces visual contrast.

-- 
 Phil Payne
 Committee Member, UK Audi [ur-]quattro Owners Club