Ohio Rev. Code § 4907.45
No superintendent or other executive officer of a company operating a railroad who receives from the public utilities commission notice of a prescribed rate of speed for trains passing over a defective track, bridge, or other structure, or notice forbidding the running of passenger trains over such defective track, bridge, or other structure, shall neglect, within two days after receiving such notice, to direct the proper subordinate officers to run the passenger trains over such defective track, bridge, or other structure at a speed not greater than that so prescribed, or, if the running of a passenger train is so forbidden, to stop running passenger trains over it. No engineer, conductor, or other employee shall knowingly disobey such an order.
R.C. § 4907.45