When the city manager shall determine that the establishment of a bicycle parking zone is reasonably necessary or desirable for the regulation of traffic or to provide facilities for the temporary parking of bicycles being operated upon public streets, or to safeguard life or property, he is authorized to set aside a space on the street not more than thirty-six (36) feet in length for the parking of bicycles during such hours of such days as are found by him to be best suited for the accomplishment of the purpose set forth in this section. When a bicycle parking zone is so established, the city manager shall cause appropriate signs to be posted thereat during such hours, giving notice that parking of other vehicles is prohibited. No person shall stop, stand or park any other vehicle in front of such zone while such signs are in place. (Prior code § 3011(k))