1. Where the transportation of school children referred to in sections 229, 454 and 461 of the Highway Safety Code (chapter C-24.2) is not incorporated into the public transit service of the holder of an urban transport permit within the meaning of section 22 of the Bus Transport Regulation (chapter T-12, r. 16) or of a public body providing public transit, such transportation shall be carried out by means of a school bus, a school minibus or a vehicle used for the transportation of school children.