I compare some of this to the street boulevards. It's public property but the adjacent homeowner is responsible for maintenance. Most city homeowners would hate if people came through and tore up their grass and made a mess for them to have to deal with. There is a lot of variables to this of course, depends on each road, ROW widths, and maintenance responsibilities, along with any liabilities (the fence just past right of way and accident happens with sue happy society).