9-7-11-2:  ONE-WAY TRAFFIC:
   Upon drives or roadways in the parking area designated for one-way traffic, vehicular traffic shall move only in the indicated direction when signs, signals or other devices indicating the direction of traffic are erected and maintained at intersections and alleys where movement in the opposite direction is prohibited.  It shall be unlawful for any person to drive any vehicle in violation of signs, signals or other devices so placed to designate drives or roadways, parts thereof or specific lanes thereon upon which vehicular traffic shall proceed In one direction.
   Appropriate signs, signals or other devices designating certain roadways in the parking area for one-way traffic shall be erected in conformity with the said Plans.