When ordered by Council, approved automatic lights or signals shall be installed at designated railroad crossings by the company owning the tracks at the crossings. Such lights and signals shall be kept in good working order at all hours of the day or night so that all persons approaching the crossings will be warned of the danger of approaching trains, engines or cars on the tracks. Likewise, Council may order railroad companies to keep flagmen at designated crossings. No person shall fail to comply with such an order.
(1958 Code § 21.7)