4. The structure of the body of a bus or minibus shall be made of steel or of a similar material at least as resistant as steel; it shall be capable of supporting one and one-half times the curb mass of the vehicle.
The application of this section concerning the minimum standards for the construction of the structure of the body and roof of a bus or minibus used for the transportation of handicapped persons with respect to a bus or minibus that complies with the requirements provided for in section 6.16 of CSA Standard D-409-16, “Motor vehicles for the transportation of persons with physical disabilities”, published by the Canadian Standard Association is suspended. (M.O. 2019-21, s. 1)