A. Whenever the traffic authority determines that an emergency traffic congestion is liable to result from the holding of public or private assemblages, gatherings or functions, or for other reasons, the traffic authority shall have the power and authority to order temporary signs to be erected or posted indicating that the operation, parking or standing of vehicles is prohibited on the streets and alleys as the traffic authority directs during the time the temporary signs are in place. The signs shall remain in place only a reasonable time, before, during, and after the existence of such emergency.

B. When signs authorized by the provisions of this section are in place giving notice thereof, no persons shall operate, park or stand any vehicle contrary to the directions and provisions of the signs. (Prior code § 11.04.610)