§ 70.57  PEDESTRIAN-ACTUATED SCHOOL CROSSING SIGNALS.
   Whenever a pedestrian-actuated school crossing signal is provided, it requires obedience by vehicular traffic and pedestrians as follows:
   (A)   “Flashing yellow.”
      (1)   When a yellow lens is illuminated with rapid intermittent flashes, drivers, or operators of vehicles may proceed through the intersection or pass such signal only with caution; and
      (2)   Pedestrians shall not proceed in conflict with traffic, but may activate the signal control switch, and shall wait until steady red alone is shown before entering the roadway or intersection controlled by the signal.
   (B)   “Steady yellow alone.”
      (1)   Vehicular traffic facing the signal is thereby warned that the red or “Stop” signal will be exhibited immediately thereafter, and such vehicular traffic shall not enter or be crossing the intersection or pass the signal when the red or “Stop” signal is exhibited; and
      (2)   No pedestrian shall enter the roadway or intersection on which the signal controls vehicular traffic until steady red alone is shown.
   (C)   “Steady red.”
      (1)   Vehicular traffic facing the signal shall stop before entering the crosswalk on the near side of the intersection, and shall remain standing until flashing yellow is shown alone; and
      (2)   Pedestrians may proceed across the road controlled by the signal, and shall be given the right-of-way by the drivers of all vehicles.
   (D)   “Steady red and steady yellow combined.”
      (1)   Vehicular traffic facing the signal is thereby warned that the flashing yellow signal will be exhibited immediately thereafter, and that such vehicular traffic shall remain standing until the flashing yellow is shown alone; and
      (2)   Pedestrians are thereby warned that the flashing yellow signal is about to be shown and shall not enter the signal-controlled roadway or intersection or in a direction which conflicts with the movement of vehicular traffic, but any pedestrian who has partially completed crossing shall proceed to the nearest sidewalk or safety island and shall be given the right-of-way by the drivers of all vehicles.
(O.S. § 11-205)  (`83 Code, § 15-608)