All of my long runs take place in the countryside to the east of town. It's all two lane roads and there is very little traffic. I always run on the left side of the road - facing traffic. When I do encounter cars, they are really good about moving all of the way into the other lane as they pass me. I've been pleasantly surprised and I always give them a wave of thanks.
I can't say the same for bikes. Even if it is a couple of bikes coming my way, it's a game of chicken. I exaggerate slightly but they seem to enjoy some close time with me as they pass. I ran this past Saturday and I ran right into the Labor Day Century ride. Hundreds of riders riding a hundred miles. A few would shout out "runner up" and move to their left but others enjoyed watching me sidestep into the ditch. Maybe they were acting out their roid rage. giggle.