"Commercial Vehicle" Defined - Mich. Comp. Laws Section 257.7

Sec. 7.

"Commercial vehicle" includes all motor vehicles used for the transportation of passengers for hire, or constructed or used for transportation of goods, wares or merchandise, and/or all motor vehicles designed and used for drawing other vehicles and not so constructed as to carry any load thereon either independently or any part of the weight of a vehicle or load so drawn.