[B]As a Whole, the answers to your Questions are going to vary from State to State and for that matter from Cop to Cop on how they interpret the law.. I will tell you that I have never been stopped for running the Left Lane while Towing,,just use Common Sense. Don't be Holding up Traffic, make your Pass and move back over!!
Commercial Vehicle laws again vary from State to State, but mainly are controlled by Two Rules,,, Gross G.V.W. and if your "For Hire"
The Beach???? Mine is only Two W.D.,,, I'm not going near it!!