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

Full text
54. Car ladders must be equipped with steps or rungs placed at a height of not more than 60 cm (24 in.) above the rails and set back at 10 cm (4 in.) or less from the side.
The ladders must be equipped with an additional step where the step or rung is placed at a height of more than 50 cm (20 in.) above the rails.
O.C. 1401-2000, s. 54.