If an owner of private property posts on the property, in a conspicuous manner, a prohibition against parking on the property or conditions and regulations under which parking is permitted, no person shall do either of the following:
(1) Park a vehicle on the property without the owner's consent; or
(2) Park a vehicle on the property in violation of any condition or regulation posted by the owner.
(ORC 4511.681)
(EDITOR'S NOTE: see Section 454.02 of this Traffic Code for regulations on establishing private tow-away zones)