(A)   When clearly marked, barricaded or sign-posted, traffic and parking may be temporarily restricted for any public or private use.  The Chief of Police is authorized to temporarily restrict traffic and parking in accordance herewith.
   (B)   Restricted or prohibited parking and traffic lanes may be designated by painting the same upon streets and curbs.  Such work shall be done by the Street Department or by a contractor under the direct supervision of the Chief of Police, or his or her designee, and in compliance with provisions of this title.
   (C)   It is unlawful to use traffic or parking lanes contrary to sign-posting or marking authorized and described in this section.
   (D)   Experimental restrictions and directions may be placed on traffic and parking by the Chief of Police when a hazardous condition is observed or arises.  It is unlawful to violate any restriction or direction when the same has been duly marked, barricaded or sign-posted.
('69 Code, § 5.03, Subd. 2)  (Ord. 538-5, eff. 1-8-76)  Penalty, see § 70.99