Ohio Rev. Code § 2305.13
All actions by carriers for recovery of their charges or part thereof, arising out of the intrastate transportation of persons or property in this state, and all actions against carriers, upon recovery of overcharges, collected by such carriers, for the intrastate transportation of persons or property in this state, shall be begun within three years of the time the cause of action accrues.
The cause of action in respect to a shipment of property shall, for the purposes of this section, accrue upon the delivery, or tender of delivery thereof, by the carrier.
"Overcharge" as used in this section means charges for transportation services in excess of those applicable thereto under the tariffs lawfully on file with the public utilities commission.
R.C. §2305.13