(a) It shall be the duty of the Director of Safety to see that the laws of the City relating to traffic are maintained and enforced.
(b) The Director of Safety is authorized to make and enforce traffic rules and regulations to cover emergencies or special conditions.
(c) The Director of Safety is authorized to establish temporary traffic patterns, which may be other than those prescribed by law or ordinance, to route traffic around street construction projects or other obstacles to traffic. Temporary routes shall be posted while in effect and shall be discontinued when traffic can be returned to normal patterns.