The Chief of Police or City Traffic Engineer is hereby empowered to make regulations necessary to make effective the provisions of this and other traffic ordinances of the City, to establish no parking zones on special occasions to expedite traffic or for safety purposes, signs being properly posted, to make and enforce temporary or experimental regulations to cover emergencies or special conditions or to determine the advisability of permanent regulations for recommendation to the Governing Body, and test traffic-control devices under actual conditions of traffic. No temporary or experimental regulation shall remain in force for more than ninety (90) days. (Ord. 01-89 § 2, 2001.)