331.155  INTERSECTIONS AT WHICH TRAFFIC CONTROL SIGNALS FAIL OR MALFUNCTION.
   The driver of a vehicle who approaches an intersection where traffic is controlled by traffic-control signals shall do all of the following, if the signal facing the driver either exhibits no colored lights or colored lighted arrows or exhibits a combination of such lights or arrows that fails to clearly indicate the assignment of right-of-way:
   (a)   Stop at a clearly marked stop line, but if none, stop before entering the crosswalk on the near side of the intersection, or, if none, stop before entering the intersection;
   (b)   Yield the right-of-way to all vehicles in the intersection or approaching on an intersecting road, if the vehicles will constitute an immediate hazard during the time the driver is moving across or within the intersection or junction of roadways;
   (c)   Exercise ordinary care while proceeding through the intersection.
(ORC 4511.132)
Penalty - see Sections 307.01 and 307.02