It shall be unlawful for any person to allow any trench, ditch or excavation in any street, sidewalk or public place of the city to remain open between sunset and sunrise or to allow any obstruction, building material, scaffold, impediment or obstacle to remain in or upon any street, sidewalk or public place in the city between sunset and sunrise, unless the obstruction, building material, scaffold, impediment, obstacle, trench, ditch or excavation has sufficient number of lights properly displayed around it as danger signals to prevent accidents to persons or property.
(1977 Code, § 3-1005)