RV's have an exemption for air brakes so you do NOT need a CDL in any state. My grandfather is very up to date on this matter as he is 80 and still has a 36 footer that weighs in at 33K by itself with full on air brakes and all just like a big rig. He scares me driving his HIGHLANDER, but nobody else in the family will back me up in telling him he is too old too handle his motorhome anymore. I've said it a few times now and am really worried what is going to happen when he gets stressed out and rides down 2 lanes in a construction zone and doesn't see that little car in his blind spot. I don't think they need a CDL, but if it has airbrakes then you should have to have an airbrake endorsement, and I believe they should come out with an RV license. Even years back when FL had a class E and D for non CDL licenses you could drive an RV with an E, but a dually required a D which meant you had to go take a driving test and everything else to prove you knew the trailering laws. Don't you just LOVE lobbyists.