Special pedestrian control signals exhibiting the words “Walk”, “Wait” or “Don't Walk” shall regulate pedestrian movement as follows:
   (A)   “Walk.”  Pedestrians facing such signal may proceed across the roadway in the direction of the signal and shall be given the right-of-way by the drivers of all vehicles; and
   (B)   “Wait” or “Don't Walk.”  No pedestrian shall start to cross the roadway in the direction of such signal, but any pedestrian who has partially completed his crossing on the “Walk” signal shall proceed to a sidewalk or safety zone while the “Wait” signal is showing.
(47 O.S. § 11-203)  (`83 Code, § 15-606)  Penalty, see § 70.99