I have the same thing, we are from Custer,SD. and don't need to have a cdl as long as we don't do commercial work. We studied the SD CDL manual, just for the info in it. 2.5 years of driving the Volvo 770 from coast to coast and haven't had a problem. I understand your state of domicile is honored by other states. But I've never been stopped and I never stop at the weigh stations.......
Mike
www.PressureProSystem.com