Ohio Rev. Code § 4503.01: Motor vehicle defined.

"Motor vehicle" as defined in section 4505.01 of the Revised Code applies to sections 4503.02 to 4503.10, and 4503.12 to 4503.18 of the Revised Code. For the purposes of sections 4503.02 to 4503.04, 4503.10 to 4503.12, 4503.182, 4503.19, 4503.21, 4503.22, and 4503.25 of the Revised Code, the term "motor vehicle" also includes a motorized bicycle and a trailer or semitrailer whose weight is four thousand pounds or less.

As used in this chapter, "motor vehicle" does not include a concrete pump or a concrete conveyor.