QUOTE(adiel @ Jan 9 2008, 09:40 AM)

is there a 'rule' to figure out the angle? i know that when i look into my side mirrors, 1/4 of the mirror should be my own car, the rest should be the road/cars near me. maybe there is a rule to tilt the mirror so i 'know' it's blinding the guy behind me.
I dont know of any rule. Also, keep in mind that all different cars' headlights are placed at various heights and positions on the front of said vehicle, so I cant imagine there being such a rule. I personally, am yet to figure out how to do it. I usually just move my mirror around for a bit, and hope that the reflection caught the offender's eye long enough for him/her to get the message.