A. The driver of a vehicle approaching a railroad grade crossing when a signal device gives warning of the immediate approach of a train, shall stop within fifty feet but not less than ten feet from the nearest track of such railroad and shall not proceed until he can do so safely.
B. The driver of a vehicle shall stop at and not traverse such grade crossing when a crossing gate is lowered or where a flag-man, or automatic signal warns of the approach of a train.
C. The driver of any motor vehicle carrying passengers for hire, or any school bus carrying any school children, or any vehicle carrying explosives or flammable liquid as cargo shall stop such vehicle within fifty feet but not less than ten feet from the nearest rail of the tracks and shall listen and look in both directions along such tracks from which a train might come, before proceeding across such tracks at a grade crossing; provided, that no such stop need be made at any such crossing where a police officer or a traffic-control signal directs traffic to proceed.
(Prior code § 10.331).