Rule 169. (b) “Attend to lightning, warming, ventilation, cleaning and supplying of cars, and to closing of car doors; provide for the comfort and safety of passengers; see that they are directed to the proper cars, that seats are provided, and that women, children and infirm persons are assisted; protect them against rudeness, threatened violence, abusive or obscene language, or annoyance from intoxicated or quarrelsome persons.“
Northern Pacific Rules and Regulations effective June 1, 1899.