(a) Except as provided in Section 313.03 and subsection (b) hereof, no vehicle shall be turned so as to proceed in the opposite direction upon any curve, or upon the approach to or near the crest of a grade, if the vehicle cannot be seen within 500 feet by the driver of any other vehicle approaching from either direction.
(b) The driver of an emergency vehicle or public safety vehicle, when responding to an emergency call, may turn the vehicle so as to proceed in the opposite direction. This subsection applies only when the emergency vehicle or public safety vehicle is responding to an emergency call, is equipped with and displaying at least one flashing, rotating or oscillating light visible under normal atmospheric conditions from a distance of 500 feet to the front of the vehicle, and when the driver of the vehicle is giving an audible signal by siren, exhaust whistle or bell. This subsection does not relieve the driver of an emergency vehicle or public safety vehicle from the duty to drive with due regard for the safety of all persons and property upon the highway.
(ORC 4511.37)
(c) Except as provided in subsection (b) hereof, no vehicle shall be turned so as to proceed in the opposite direction within an intersection, or upon any street in a business district, or upon a freeway, expressway or controlled-access highway, or where authorized signs are erected to prohibit such movement, or at any other location unless such movement can be made with reasonable safety to other users of the street and without interfering with the safe operation of any traffic that may be affected by such movement.
(d) Except as otherwise provided in this subsection, whoever violates this section is guilty of a minor misdemeanor. If, within one year of the offense, the offender previously has been convicted of or pleaded guilty to one predicate motor vehicle or traffic offense, whoever violates this section is guilty of a misdemeanor of the fourth degree. If, within one year of the offense, the offender previously has been convicted of two or more predicate motor vehicle or traffic offenses, whoever violates this section is guilty of a misdemeanor of the third degree.
(ORC 4511.37)