I ride the same whether the road has a bike lane or not.
During gaps in traffic, between intersections, I leave the road margin and use a lane controlling position in the main traffic lane, during which time I monitor for faster traffic approching from behind. When they get "close enough", I merge back into the margin, where I stay until the next gap or intersection, whichever comes first.
On roads where the outside lane is narrow - where the cars are generally driven in the margin or very close to it, then I just control the outside lane the entire time.