I planned a 5 week Southern USA from Fresno, Ca to Naples, Fl and back including all the intended multi-night stays in camp grounds and sites we wanted to see, using a Rand McNally GPS made for Truckers. You put all your vehicles specs, length, height, weight, and it will route you on roads that allow your specs, AND KEEP YOU AWAY FROM LOW OVERPASSES !!! It also give you distance from Truck Stops, Rest Stops, Camp Grounds and many other Places of Interest. I routed our whole trip before we started and only had to make a couple minor adjustments due to some changes along the way, but super easy and helpful !!

https://www.amazon.com/Rand-McNally-...s%2C315&sr=8-8