Ever hear of the law, Keep right except to pass, and Slower traffic keep right.
If you did this you wouldn`t have to worry how bright the lights are.
Nothing is more aggrivating the some moron in the left lane, pacing himself with the right lane, Backing up traffic and insiteing road rage.
You would be supprised how much better traffic would flow.
In Maine they have signs to this effect and traffic flows smooth, even during tourist season.
The minute you hit the NH boarder, it`s left lane blockers again.