5. The roof of a bus or minibus shall be built with steel bows capable of supporting one and one-half times the curb mass of the vehicle and of preventing the vehicle from breaking up in the case of an accident.
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)