(A) The City Engineer is authorized to erect signs indicating no parking upon any street when the width of the roadway does not exceed 20 feet, or upon one side of a street as indicated by such signs when the width of the roadway does not exceed 30 feet or for snow removal.
(B) If official signs prohibiting parking are erected as authorized herein, it is unlawful to park a vehicle upon any such street in violation of any such sign.
('72 Code, § 725:42) Penalty, see § 10.99