Caution signs which comply with the following regulations of the United States Department of Transportation regulations shall be provided and used.
Caution signs must be so placed on the track or car as to give necessary warning to persons approaching car from open end or ends of siding and must be left up until after car is unloaded and disconnected from discharge connection. Signs must be of metal, at least 12 by 15 inches in size and bear the words "STOP – TANK CAR CONNECTED" or "STOP – MEN AT WORK" and the word "STOP" being in letters at least four inches high and the other words in letters at least two inches high. The letters must be white on a blue background.
Such signs shall show the name of the specific fume hazard gas in the tank car.
(Coun. J. 12-9-92, p. 25465; Amend Coun. J. 2-7-96, p. 15616; Amend Coun. J. 11-7-22, p. 54984, § 13)