The city traffic engineer shall sign or mark as deemed necessary in regard to time or location the following places and, when so signed or marked, no person shall stop, stand or park a vehicle in any such places:
A. Upon any street when the width of the roadway does not exceed twenty (20) feet, or upon one side of a street as indicated by such signs or markings, when the width of the roadway does not exceed thirty (30) feet.
B. Upon that side of any street adjacent to any school property when such parking would, in the city traffic engineer's opinion interfere with traffic or create a hazardous situation.
C. At any place where it is necessary for the city to use the public street for construction, maintenance, repair, cleaning, tree spraying or any other city public service or safety use.
D. At any place where the city traffic engineer, based upon traffic engineering principles and investigations, determines that signs and markings are necessary to facilitate the movement of traffic or eliminate a traffic hazard for a distance not to exceed one-half city block. (Prior code § 25.07.102)