A.   Required:
      1.   Any person, firm or corporation laying or repairing any pavement on a street, sidewalk or other public place or making an excavation in the same shall maintain suitable barricades to prevent injury of any person or vehicle by reason of the work. Such barricades shall be protected by suitable lights at nighttime.
      2.   Any defect in any pavement shall be barricaded to prevent injury, and any person, firm or corporation properly maintaining any opening or excavation in any such place shall guard such opening or excavation while the same remains open by proper barricades and lights. (1990 Code § 10.109)
   B.   Disturbing Devices Prohibited: It shall be unlawful to disturb or interfere with any barricade or lights lawfully placed to protect or mark any new pavement or excavation or opening in any public street, alley or sidewalk. (1990 Code § 10.110)