It is unlawful for any person to park any vehicle on the Berkeley Municipal Pier between the hours of two a.m. and five a.m. for a greater length of time than forty minutes, unless said vehicle is a necessary aid to an existing or about to exist emergency. (Ord. 4730-NS § 2 (part), 1974: Ord. 4157-NS § 1, 1966: Ord. 3516-NS § 1, 1956: Ord. 2620-NS § 2, 1944: Ord. 2484-NS § 5, 1942: Ord. 2282-NS § 15.1, 1939)