I second the advice about taking the lane. The rightmost 2-3' of road is terrible. When the roads are plowed, the grit and gravel seems to pile there, even in communities that sweep the streets. Also, the roads seem to degrade in that region, creating a crocodile skin effect. I suspect it's because water undermines the sides of the road more, but I'm not sure. Shoulders and bridges also accumulate crap.