Are you a left or right lane driver?
Left lane is for passing and/or speeding only. It surprises me how many licensed drivers don't know this.
Left lane because I'm passing people all the time, if somberly faster than me is coming from behind, I move over until I need to pass someone again.
It's situation dependent.
Depends on where I am. On a highway out in the countryside, right. On a freeway in a city, middle or left to allow for exiting/entering traffic.
Laws for that are different in different states.
Too many state troopers' speed traps. Plus, I drive a Prius, so not speeding too much. And people tend to cruise in the middle lane, fly in the fast lane, and the slow lane is often wide open..
I mostly drive from school to home and back. The right lane moves slow because people usually turn out of it. So, I stay in the left lane.