When stop signs are erected as herein authorized at or near the entrance to any intersection, every driver of a vehicle and every motorman of a streetcar shall stop before entering the crosswalk on the near side of the intersection or in the event there is no crosswalk shall stop at a clearly marked stop line, but if none, then at the point nearest the intersection roadway where the driver has a view of the approaching traffic on the intersecting roadway before entering the intersection except when directed to proceed by a police officer or traffic control signal. (Ord. 210 § 66, 1957)