S-2.1, r. 4 - Safety Code for the construction industry

Full text
8.7.8. Any travelway in an underground work site shall be provided with shelter spaces:
(a)  if the travelway does not have, when a piece of equipment travels on tracks or by any other guided system, a minimum free space of 500 mm between the widest part of the machinery and the wall of each side of the equipment, or a free space of 600 mm on one side of the equipment;
(b)  if the width of the travelway does not exceed the width of the equipment not travelling on tracks by at least 1.5 m.
R.R.Q., 1981, c. S-2.1, r. 6, s. 8.7.8.