S-3.3, r. 2 - Regulation respecting rail safety

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6. Nobody may
(1)  stand in front of moving equipment;
(2)  ride on the side or on the roof of moving equipment when passing side and/or overhead clearance restrictions
(3)  stand on the end ladder of a moving car, except for the purpose of operating a hand brake;
(4)  get on or off equipment except by using a ladder with steps and handholds.
O.C. 1401-2000, s. 6.