There is a portion of my route to work that sort of confounds me. I don't really know which part of the roadway is better to ride in. This is a 4-lane urban road, where drivers are usually going about 45 MPH. There is a paved shoulder. However, it varies in width from about 8 to 3 feet, and has a LOT of driveways behind it. What I lately have been riding in the traffic lane, and pulling off to the shoulder to let faster traffic pass (without stopping), then going back in the lane when it's clear. Also, this shoulder turns into a freeway on-ramp further down the line. I always merge into the traffic lane before this happens. Fitting a road of this description, where and how would you ride?