S-2.1, r. 4 - Safety Code for the construction industry
(1) If the operator of motorized equipment runs the risks of being injured by flying objects, or by falling objects or material, a cabin or a protective structure shall be installed.
(2) The cabins shall be:
(a) located and equipped so as to provide the operator with the best possible view;
(b) closed and provided with safety glass windows on all side if used outside; and
(c) adequately heated during cold weather.
R.R.Q., 1981, c. S-2.1, r. 6, s. 3.10.10.