Interesting that Washington D.C.'s network of pathways seem to be better designed than most paths I've been on elsewhere. I guess government benefits don't fall too far from the tree. Here in Westchester Co. NY we have one major path that runs north-south, north-central to this region. I never broke out a ruler but my guess is our path is about 8' wide, I suppose it could be 10', but it doesn't appear to be. In D.C. they have painted, using an eco-green, a dashed stripe down the center of their paths to help its users maintain respect for what space is theirs and mine. Here, there's no such stripe. I often thought this would be a good project for a Boy Scout trying to earn his Eagle's badge; working with and helping the community by painting a stripe down the path in his area.