7-3-6: SCHOOL ZONES:
   A.   Signs Posted: The mayor, subject to direction by the council, is authorized to erect signs to designate school zones and school zone crosswalks.
   B.   Obedience To Signs And Traffic Control Personnel: No person may drive a vehicle past a school sign or through a school zone at a speed per hour greater than that posted on school days. Drivers proceeding in a school zone shall stop and yield the right of way to pedestrians in school zone crosswalks when so directed by a school safety patrol member or when such crosswalk is occupied by pedestrians between the hours posted on school days.
   C.   Prima Facie Proof: Any driver involved in a school zone crosswalk collision with a pedestrian after failing to slow and yield the right of way to such pedestrian shall be deemed prima facie in violation of this section. (1992 Code § 15-809)