This is just a possibility so take it for what it's worth...
I was considering buying a single axel dump and was concerned about needing a commercial license, the truck had a GVWR of something above 32,000 lbs. I called the MN DMV and they said I could license the truck for a weight rating LESS than the GVWR, ie; my case under 26,000 lb, to avoid the commercial license.
This could be where the "Declared Gross Vehicle Weight" comes from.
Not sure if or how this might apply to RV's.
Dan
Declared Gross vehicle weight
