I had to get a new Garmin while on the road through WV. She has taken us on every small road through downtown in this state. Garmin suggested getting the RV model. Does enybody have and information...
Really the way to use one for rv travel involves using the trip planner and then reviewing the trip to make sure it doesn't route you poorly. If it does you add weight points that keep you on a safe route. Just selecting a destination and pressing go will lead to many problems if not disaster with a large rig.