Ohio Rev. Code § 4965.58: Companies must switch cars of other companies.

When the tracks of one railroad company lie contiguous to coal mines, stone quarries, manufacturing establishments, elevators, warehouses, navigable waters, or sidetracks, suitable for loading or unloading, it shall switch the cars of other companies, at the request of such companies or the shippers, over and upon the tracks so lying by such mines, quarries, manufacturing establishments, elevators, warehouses, navigable waters, or sidetracks, for the purpose of unloading or loading grain or other freight into or from such elevators, warehouses, boats upon such navigable waters, or sidetrack without demurrage for forty-eight hours.