I live in a small town/suburb of Pittsburgh. I generally ride in residential or city streets. There are many hills where I live and highways are generally dangerous because they are twisty and have no shoulder. In town I keep around 3' of room between me and parked cars (so I don't get doored). On highways I try to aim for white line or ride on the shoulder if it exists.

I also live near the great Allegheny passage and ride it from time to time, but i find trails a bit boring.