I would like to find out the "definitive" recommended safe use of highbeams on divided highways. My understanding it that one should not drive in the left-most lane (to avoid blinding traffic on the other side of the highway) but the middle and/or right lane of a four or six or eight lane highway is fine with high-beams, and and that one should/must dim highbeams when less than 200 feet of a car in front. I've done a google search and come up with nothing! Can anyone inform or guide me to a useful source? AAA has nuttin'! National transportation safety seems to have nuttin'!