Motor Vehicle Safety Regulations — 210.1
210.1 (1) Subject to subsection (2), this section applies to every (a) passenger car; (b) three-wheeled vehicle; (c) multi-purpose passenger vehicle and truck with a GVWR of 3 856 kg or less and an unloaded vehicle weight of 2 495 kg or less; (d) school bus; and (e) bus, other than a school bus, with a GVWR of 4 536 kg or less. (2) This section does not apply to (a) a designated seating position at which a built-in restraint system is provided that is not part of a removable vehicle seat; or (b) a hearse. General (3) Subject to subsections (3.2) and (3.3), a user-ready tether anchorage shall be installed in a vehicle, other than a convertible or an open-body type vehicle, (a) in the case of a vehicle, other than a school bus, that has only one row of forward-facing designated seating positions, at all forward-facing designated seating positions other than that of the driver; (b) in the case of a vehicle, other than a school bus, that has two or more rows of designated seating positions, and not more than three forward-facing designated seating positions located to the rear of the first row of designated seating positions, at all forward-facing designated seating positions located to the rear of the first row of designated seating positions; (c) in the case of a vehicle, other than a school bus, that has two or more rows of designated seating positions, and four or more forward-facing designated seating positions located to the rear of the first row of designated seating positions, at three forward-facing designated seating positions located to the rear of the first row of designated seating positions, with at least one user-ready tether anchorage being installed at a forward-facing designated seating position in the second row of designated seating positions, and at least one user-ready tether anchorage being installed at a forward-facing inboard designated seating position, if such a designated seating position exists; (d) in the case of a school bus that has not more than 24 passenger designated seating positions, and only one forward-facing designated seating position other than that of the driver and those of a bench seat that is next to an emergency exit and contains an adjacent seat, at that forward-facing designated seating position; (e) in the case of a school bus that has not more than 24 passenger designated seating positions, and two or more forward-facing designated seating positions other than that of the driver and those of a bench seat that is next to an emergency exit and contains an adjacent seat, at two of those forward-facing designated seating positions; (f) in the case of a school bus that has 25 or more, but not more than 65, passenger designated seating positions, and not more than three forward-facing designated seating positions other than that of the driver and those of a bench seat that is next to an emergency exit and contains an adjacent seat, at all of those forward-facing designated seating positions; (g) in the case of a school bus that has 25 or more, but not more than 65, passenger designated seating positions, and four or more forward-facing designated seating positions other than that of the driver and those of a bench seat that is next to an emergency exit and contains an adjacent seat, at four of those forward-facing designated seating positions; (h) in the case of a school bus that has 66 or more passenger designated seating positions, and not more than seven forward-facing designated seating positions other than that of the driver and those of a bench seat that is next to an emergency exit and contains an adjacent seat, at all of those forward-facing designated seating positions; and (i) in the case of a school bus that has 66 or more passenger designated seating positions, and eight or more forward-facing designated seating positions other than that of the driver and those of a bench seat that is next to an emergency exit and contains an adjacent seat, at eight of those forward-facing d