I have stopped at the Ohio Turnpike. They do have a 40 foot limit but I doubt if it's enforced. Sites are back-in. Some areas do not have a fence at the back so you can hang over the grass, others have the fence. At 40 feet you would probably have to unhook and park truck out of the way if traveling during the summer. I traveled in late October so there was only one other rig present. 30 & 50 amp was at the site.