Ohio Rev. Code § 5728.13: Exemptions.

Sections 5728.02 to 5728.12 of the Revised Code do not apply to motor vehicles, commercial cars, or commercial tractors owned and operated by the United States, by this state or any political subdivisions thereof, or by any other state or its political subdivisions if that state extends a similar exemption to motor vehicles, commercial cars, or commercial tractors owned and operated by this state or its political subdivisions.