Ohio Rev. Code § 4519.08: Vehicles used for emergency purposes registered free of charge.

Any snowmobile, off-highway motorcycle, or all-purpose vehicle owned or leased by the state, by any of its political subdivisions, or by any volunteer organization that uses such vehicles exclusively for emergency purposes shall be registered free of charge. The registration number and registration sticker assigned to each such snowmobile or off-highway motorcycle, and the license plate and validation sticker assigned to such an all-purpose vehicle, shall be displayed as required by section 4519.04 of the Revised Code.