§ 9.08.390 BARRIERS, LIGHTS AND SIGNS; WRONGFUL REMOVAL.
   A.   Barrier, lights and signs. The following barriers, lights and signs shall be required:
      1.   Excavations. Every person excavating any street shall place and maintain barriers at each end of such excavation and at such other places along the excavation as may be necessary to prevent accident, and shall also place and maintain lights at each end of such excavation and at distances of not more than fifty (50) feet along the line thereof, from sunset of each day to sunrise of the next day, until such excavation is entirely refilled. The person doing the work of excavating may place or post signs directing traffic around the excavation and any materials or equipment used in connection therewith. It shall be unlawful for any person to fail, refuse or neglect to comply with any requirement contained herein.
      2.   Street closing. Every street, or portion thereof, which is closed to public travel, shall be barricaded. Warning lights shall be placed on the barricades, as may be reasonably necessary, from sunset of each day to sunrise of the following day. Signs or notices to the effect that the street is closed shall be of a type approved by the City Engineer. Signs which direct traffic in such cases may be placed or posted only by or with the approval of the Division.
('65 Code, § 30-39)
   B.   Wrongful removal. No person shall willfully remove, injure, destroy or extinguish any barrier, warning light, sign or notice erected, placed, or posted in accordance with the provisions of this Subchapter.
('65 Code, § 30-40)