Ohio Rev. Code Ann. § 4503.193

The display of a single current license plate and validation sticker on a motor vehicle as required under section 4503.19 of the Revised Code sufficiently indicates that the vehicle is registered in this state. Any reference in the Revised Code to license plates, a set of license plates, registration plates, or validation stickers is deemed to be a reference to the single license plate and validation sticker required by that section.