After spending a small fortune on Garmin GPS's over the years and looking at a new Garmin for RV's I decided to try the Copilot RV APP. You can input the ht of your RV and it will also avoid propane restricted tunnels. It came with active traffic for 3 mos or so. I paid $6.99 on sale about 10 years ago and still use it. Maps are automatically up dated unlike my old Garmin's. There may be better APP's for RV travel now, but bottom line I would not go back to a dedicated GPS like Garmin. I have an old I pad with a much bigger screen than my I Phone that I have used several times but I like the phone better.