No person other than a Police Officer, a person deputized by the Chief of Police, a Traffic Officer, or an off duty or retired police officer authorized under the provisions of Section 80.03.1 shall direct or attempt to direct traffic by voice, hand or other signal, provided however, that a member of the Fire Department, wearing the badge or insignia of a fire fighter and acting in the course of his or her duties, may direct traffic to protect the personnel and equipment of the Fire Department. Persons may operate, when and as herein provided, any mechanical push button signal erected pursuant to this chapter. (Amended by Ord. No. 164,340, Eff. 2/20/89.)