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

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3.10.11. Lighting: When a self-propelled vehicle is in operation after nightfall or whenever circumstances so require, it shall be provided with:
(a)  headlights in front and at least one red light in the rear; and
(b)  sufficient lighting installed so as not to hamper the operator but allowing him to carry out his duties and to read easily the indicators on the dashboard.
R.R.Q., 1981, c. S-2.1, r. 6, s. 3.10.11.