49.1.Between the 15th day of October and the first day of May, a school service centre, a school board or a private educational institution and a carrier doing business with them shall ensure that the tires with which a multifunction school activity bus or a 12 to 15 passenger bus is equipped are specifically designed for winter driving within the meaning of subparagraph 2 of the first paragraph of section 7 of the Regulation respecting the use of tires specifically designed for winter driving (chapter C-24.2, r. 45).