Drivers of recreational vehicles used for recreational purposes
Bruce, that sounds like it's the key. The important thing (at least it was in CA), is to make sure it it licensed as a recreational vehicle. If you go in and say "bus" in the DMV, you can sometimes get the clerks confused. In CA at least, ours will specifically say "motorhome" somewhere on the registration.

Ray

ps: As an example, however, in CA if the coach is over 40 ft, then it requires a Class B non-commercial license.