I know you are required to dim your lights if you have your brights on when you meet another vehicle on a highway. However: 1. I know it is "polite" to switch from brights to dims if you are following another car, but is it required? I've never heard of anyone being ticketed for this, or even warned. 2. On a divided highway, are you supposed to dim your lights, especially in the left lane, when you "meet" a car? On Hwy 29, there is hardly any median in many places, so if you are in the left lane and meet a car in the other left lane, it is barely any farther away than a regular highway. Always wondered both, thanks in advance.