Ohio Rev. Code Ann. § 4511.64
(A) No person shall operate or move any crawler-type tractor, steam shovel, derrick, roller, or any equipment or structure having a normal operating speed of six or less miles per hour or a vertical body or load clearance of less than nine inches above the level surface of a roadway, upon or across any tracks at a railroad grade crossing without first complying with divisions (A)(1) and (2) of this section.