337.22  REAR-VIEW MIRROR; CLEAR VIEW TO FRONT, BOTH SIDES AND REAR.
   Every motor vehicle and motorcycle shall be equipped with a mirror so located as to reflect to the operator a view of the highway to the rear of such vehicle or motorcycle.  Operators of vehicles and motorcycles shall have a clear and unobstructed view to the front and to both sides of their vehicles and motorcycles and shall have a clear view to the rear of their vehicles and motorcycles by mirror.
(ORC 4513.23)
Penalty - see Sections 307.01 and 307.02