Ohio Revised Code Title XLV. Motor Vehicles Aeronautics Watercraft § 4549.01

(A) No person while operating a motor vehicle shall fail to slow down and stop the vehicle when signalled to do so upon meeting or overtaking a horse-drawn vehicle or person on horseback and to remain stationary until the vehicle or person has passed, provided the signal to stop is given in good faith, under circumstances of necessity, and only as often and for that length of time as is required for the vehicle or person to pass, whether it is approaching from the front or rear.

(B) Whoever violates this section is guilty of a minor misdemeanor on a first offense and a misdemeanor of the fourth degree on each subsequent offense.