When a sign indicating that a driveway is to be used only for entry from a street is maintained in a prominent position adjacent to such driveway, no operator shall drive any vehicle from any such driveway into a street, nor shall any operator drive into any such signed driveway from the street where said sign indicates the driveway is to be used only for entering the street. Violation of this section is a traffic infraction. (Ord. 2922 § 24, 1980; Ord. 2533 § 8, 1978; 1961 code § 11.48.200.)