I'm not Ohio, but here's something to think about:

I heard directly from an Indiana DOT enforcer, in a DOT-related training class, within the last year, that:
if you are using the vehicle to make money you fall under their blanket of commercial vehicle.

So if you're hauling a car to the scrapyard and will receive $ for it, you are commercial at that point.

He also said having 'not for hire' on your door does not make any difference.

Lots of gray area involved, and some of you guys will fall under the net of commercial unless you're prepared to spin a convincing story to The Man if he pulls you over.