(a) If traffic-control signals are not in operation, the driver of a vehicle shall yield the right of way, slowing down or stopping if necessary, to a pedestrian crossing the roadway within a crosswalk.
(b) No pedestrian may suddenly leave a curb or other place of safety and walk or run into the path of a vehicle that is so close that it is impossible for a driver to yield.
(c) If any vehicle is stopped at a marked crosswalk or at any unmarked crosswalk at an intersection to permit a pedestrian to cross the roadway, the driver of any other vehicle approaching from the rear may not overtake and pass the stopped vehicle.