I just put new plates on my dually and they gave me car plates. the plate I had before was 14000#'s. when I asked them whats the deal they said if I'm a just a hobby guy then I'll have no problems and that other states must allow me to pass throuogh without issues, somthing about the interstate commerce act. So I have a 3000# plate on a Cummins Dually with a 24' enclosed