T-12, r. 17 - Regulation respecting road vehicles used for the transportation of school children

Full text
33. A school bus shall be provided, at the front, with at least 2 mirrors each having an exposed surface of at least 250 cm2 and reflecting the testing areas in accordance with the test method described in Schedule I. The mirrors shall be fully visible to the driver through the lower part of the windshield wiped by the wipers.
A school bus shall also be provided with a mirror installed inside the passenger compartment and allowing the driver to see the passengers. In a bus of more than 4,536 kg, that mirror shall be at least 750 mm wide and at least 150 mm deep.
O.C. 285-97, s. 33.