(a)   Whenever an illuminated flashing red or yellow traffic signal is used in a traffic signal or with a traffic sign, it shall require obedience as follows:
      (1)   Flashing Red Stop Signal.  Operators of vehicles shall stop at a clearly marked stop line, but if none, before entering the crosswalk on the near side of the intersection, or if none, then at the point nearest the intersecting roadway where the driver has a view of approaching traffic on the intersecting roadway before entering it, and the right to proceed shall be subject to the rules applicable after making a stop at a stop sign.
      (2)   Flashing Yellow Caution Signal. Operators of vehicles may proceed through the intersection or past the signal only with caution.
   (b)   This section shall not apply at railroad grade crossings. Conduct of drivers of vehicles approaching railroad grade crossings shall be governed by Ohio R.C. 4511.61 and 4511.62, or substantially equivalent municipal ordinances.
(ORC 4511.15)
Penalty - see Sections 307.01 and 307.02