[HungLikeJesus]

From Dar's link:

§ 4511.711. Driving upon sidewalk area.
No person shall drive any vehicle, other than a bicycle, upon a sidewalk or sidewalk area except upon a permanent or duly authorized temporary driveway. Nothing in this section shall be construed as prohibiting local authorities from regulating the operation of bicycles within their respective jurisdictions, except that no local authority may require that bicycles be operated on sidewalks.

Comment: Although this section allows riding on sidewalks, don’t do it. Accident studies show that even low-speed sidewalk riding has about double the accident rate as riding on the road. The danger increases with speed. If you ride on the sidewalk, every intersection and even every driveway is a potential collision site. Motorists crossing your path do not look for conflicting traffic on the sidewalk, especially if you are coming from the "wrong way".