here is a trick an eye doctor taught me:

close one eye as an oncoming car approaches, and open it again after the
glare has passed. the temporarily closed eye will remain night adapted.

On Thu, 11 Sep 2003 11:22:56 +1200, Andrew Grebneff
<andrew.grebneff@STONEBOW.OTAGO.AC.NZ> wrote:

>>It was easy to tell the oncoming cars that had the "upgraded" lights
>>because they are still blinding you after they switch to dim and because
>>of the clear difference (in some cases) of the nature of the light
>>beam.  However, it was very hard to see the road afterwards and there
>>were several brief periods where I really almost couldn't see the road.
>>I had to brake and really slow down a few times to insure I stayed on
>>the road - waiting for my eyes to readjust.
>
>Those cars probably had one or more of the following:
>
>blue-tinted H4 bulbs in nonQH units
>RHD H4 units
>H4s in US-market lights
>lights misadjusted
>
>A proper LHD H4 unit has a low-beam cutoff and, correctly adjusted,
>will not glare.
>
>All cars here (apart from some 1984-1990 Japanese-market Toyotas)
>have standard H4s. No glare problems, even with 80W low-beams. No way
>would I wany glow-worm US lights! I like to SEE where I'm going.
>--
>Andrew Grebneff
>Dunedin, New Zealand
>64 (3) 473-8863
><andrew.grebneff@stonebow.otago.ac.nz>
>Fossil preparator
>Seashell, Macintosh & VW/Toyota van nut