The Denver and Rio Grande Western Railroad Company is required to construct at its own expense and to maintain in continuous operation automatic mechanical warning devices for the purpose of warning pedestrians, drivers of vehicles and others crossing its tracks of the approach of its engines and cars:
A. At Second South Street between Fifth West Street and Sixth West Street, where its tracks cross Second South Street;
B. At Sixth South and Fifth West Streets, where its tracks cross Sixth South Street; and
C. At Eighth South Street and Fifth West Street, where its tracks cross Eighth South Street. (Prior code § 35-2-6)