The roads to my work are crowded and have curbs, not shoulders. No bike lanes or MUPs. I can either take the lane in dark 50mph traffic or ride the sidewalk. I have not worked myself up to taking the lane, especially in the mornings when it's dark.

So I have been riding the sidewalks. I am constantly on the lookout for cars pulling out of side streets and driveways, but I do feel more safe than if I was out on the street.

When I take fun rides that are further north, and the roads have shoulders and wider lanes, then I do ride in the lanes.