All barricades, fences, sidewalk sheds, equipment, material, debris, pits, excavations or obstructions within the side lines of a street or alley shall be marked, after dark, with flares, red lanterns or red electric light bulbs to warn pedestrians and operators of vehicles of the presence of such obstructions, pits or excavations.
(Ord. 46-1989. Passed 3-20-89.)