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

Full text
35. A school bus shall be provided with an extendable stop sign or with a stop sign attached to an extendable arm, located on the outside of the passenger compartment, on the front left side, level with the driver’s seat.
The stop sign shall be provided with alternately flashing red lights which operate simultaneously with the flashing red lights.
O.C. 285-97, s. 35; O.C. 643-2005, s. 6.