When signs prohibiting parking are erected on narrow streets, no person shall park or stand a vehicle in any such designated place. The City Traffic Engineer is authorized to erect signs indicating “no parking” upon both sides of any street when the width of the roadway does not exceed 20 feet, or upon one side of a street when the width of the roadway does not exceed 30 feet. (Ord. 01-89 § 2, 2001.)