335.02 PERMITTING OPERATION WITHOUT VALID LICENSE; ONE LICENSE PERMITTED.
(a)   No person shall permit the operation of a motor vehicle upon any property used by the public for purposes of vehicular travel or parking knowing the operator does not have a valid driver’s license issued to the operator by the Registrar of Motor Vehicles under Ohio R.C. Chapter 4507 or a valid commercial driver’s license issued under Ohio R.C. Chapter 4506.
(b)   No person shall receive a driver's license, or a motorcycle operator's endorsement of a driver's or commercial driver's license, unless and until he surrenders to the Registrar all valid licenses issued to him by another jurisdiction recognized by the State of Ohio. No person shall be permitted to have more than one valid license at any time. (ORC 4507.02)