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MOTOR VEHICLE SAFETY ACTMotor Vehicle Safety RegulationsStandard 222School Bus Passenger Seating and Crash Protection 222. (1) In this section, "contactable surface" means any surface within the head protection zone that is contactable from any direction by a head form test device, except any surface on the front of a seat back or restraining barrier 76 mm (3 inches) or more below the top of the seat back or restraining barrier; "head protection zones" means the spaces in front of each school bus passenger seat that are not occupied by any sidewall, window or door structure and that, in relation to that seat and its seating reference point, are enclosed by the following planes: (a) horizontal planes 300 mm (12 inches) and 1 016 mm (40 inches) above the seating reference point, (b) a vertical longitudinal plane tangent to the inboard (aisle side) edge of the seat, (c) a vertical longitudinal plane 83 mm (3.25 inches) inboard of the outboard edge of the seat, and (d) vertical transverse planes through and 760 mm (30 inches) forward of the seating reference point; "leg protection zones" means those parts of a school bus passenger seat back or restraining barrier that are bounded by horizontal planes 300 mm (12 inches) above and 100 mm (4 inches) below the seating reference point of the school bus passenger seat immediately behind the seat back or restraining barrier; "school bus passenger seat" means a seat in a school bus, other than the driver's seat or a seat that is installed to accommodate a handicapped or convalescent passenger and is oriented in a direction that is more than 45 degrees to the left or right of the longitudinal centre-line of the vehicle. "W" means the number of seating positions in a bench seat when calculated as the bench width in millimetres (inches) divided by 381 mm (15 inches) with the quotient rounded to the nearest whole number or, if the quotient is equidistant from two whole numbers, to the higher thereof. (2) Every school bus shall, when subjected to Motor Vehicle Safety Test Methods, Section 222, School Bus Passenger Seating and Crash Protection, (December 19, 1983) meet, at all designated seating positions other than the driver's seat, all the requirements of subsections (6) to (12). (3) Any particular passenger seat of a school bus used as a test specimen when the school bus is subjected to the test methods referred to in subsection (2), need not meet further requirements after having been subjected to the requirements of (a) subsections (6) and (9); or (b) subsection (7), (8), (11) or (12). (4) Passenger seats on a school bus shall face directly either the front or the rear of the vehicle. (5) The number of seating positions in a bench type seat shall be obtained by dividing the bench width measured in millimetres or inches by 381 mm or 15 inches, as the case may be, and rounding the quotient to the nearest whole number or, if the quotient is equidistant from two whole numbers, to the higher thereof. (6) Every school bus passenger seat shall be equipped with a seat back having (a) a height of not less than (i) 508 mm (20 inches) above the seating reference point, where the seat faces the front of the vehicle, and (ii) 762 mm (30 inches) above the seating reference point, where the seat faces the rear of the vehicle, and (b) a front surface area of not less than 90 per cent of the seat bench width measured in millimetres or inches multiplied by 508 mm or 20 inches, as the case may be, that is (i) above the horizontal plane that passes through the seating reference point, and (ii) below the horizontal plane that passes through a point 508 mm or 20 inches above the seating reference point. (7) Where a school bus passenger seat that has another seat behind it is subjected to forward performance tests as specified in the test methods referred to in subsection (2) (a) the seat back force/deflection curve shall fall within the zone specified in Figure 1; (b) the seat back deflection shall not exceed 356 mm (14 inches), as determined from the force/deflection curve; (c) the seat shall not deflect by an amount such that any part of the seat moves to within 100 mm (4 inches) of any part of another school bus passenger seat or restraining barrier in its originally installed position; (d) the seat shall not separate from the vehicle at any attachment point; (e) the seat components shall not separate at any attachment point; and (f) the energy absorbed in deflecting the seat back shall be not less than 452W Nm (4000W inch - pounds), as determined from the force/deflection curve. (7.1) In subsection (7), "force/deflection curve" means, (a) for the purposes of paragraphs (7)(a) and (b), the force applied by means of the upper loading bar and the forward travel distance of the pivot attachment point of the upper loading bar, measured from the point at which the initial application of 44.5 N (10 pounds) of force is attained; and (b) for the purposes of paragraph (7)(f), the force applied by means of the upper loading bar and the forward and rearward travel distance of the pivot attachment point of the upper loading bar measured from the position at which the initial application of 44.5 N (10 pounds) of force is attained. (8) Where a school bus passenger seat that has another seat behind it is subjected to rearward performance tests as specified in the test methods referred to in subsection (2), (a) the seat back force shall not exceed 9786 N (2,200 pounds), as determined from the force/deflection curve; (b) the seat back deflection shall not exceed 250 mm (10 inches), as determined from the force/deflection curve; (c) the seat shall not deflect by an amount such that any part of the seat moves to within 100 mm (4 inches) of any part of another school bus passenger seat in its originally installed position; (d) the seat shall not separate from the vehicle at any attachment point; (e) the seat components shall not separate at any attachment point; and (f) the energy absorbed in deflecting the seat back shall be not less than 316.4W Nm (2800W inch-pounds), as determined from the force/deflection curve. (8.1) In subsection (8) "force/deflection curve" means (a) for the purposes of paragraphs (8)(a) and (b), the force applied by means of the loading bar and the rearward travel distance of the pivot attachment point of the loading bar measured from the point at which the initial application of 222.4 N (50 pounds) of force is attained; and (b) for the purposes of paragraph (8)(f), the force applied by means of the loading bar and the rearward and forward travel distance of the pivot attachment point of the loading bar measured from the position at which the initial application of 222.4 N (50 pounds) of force is attained. (9) No seat cushion with which a school bus passenger seat is equipped shall, where all the manual attachment devices between the seat and the seat cushion are in the manufacturer's designed position for attachment, separate from the seat at any attachment point when subjected to an upward force of five times the seat cushion weight, applied in any period of not less than 1 nor more than 2 seconds, and maintained for 5 seconds. (10) A restraining barrier shall be provided forward of any designated seating position that does not have the rear surface of another school bus passenger seat within 610 mm (24 inches) of the seating reference point, measured along a horizontal line through the seating reference point in the forward direction, such that (a) the horizontal distance between the restraining barrier's rear surface and the seating reference point of the seat in front of which it is required is not more than 610 mm (24 inches); (b) the position and rear surface area of the restraining barrier shall be such that, in a front projected view of the bus, each point of the barrier's perimeter coincides with or lies outside of the perimeter of the seat back of the seat for which it is required; and (c) when subjected to the forward force, as specified in the test methods referred to in subsection (2), the restraining barrier shall meet all the requirements specified in paragraphs (7)(a), (b), (d), (e) and (f) as they apply to a seat, and the restraining barrier deflection shall not interfere with normal door operation. (11) When any contactable surface of a school bus within the head protection zones is impacted from any direction by a head form test device, as specified in the test methods referred to in subsection (2), (a) at 6.7 m/s (22 feet per second), (i) the axial acceleration at the centre of gravity of the head form test device shall be such that the expression
shall not exceed 1,000, where "a" is the axial acceleration expressed as a multiple of "g" (the acceleration due to gravity), and t1 and t2 are any two points in time during the impact, and (ii) the energy necessary to deflect the impacted material shall be not less than 4.52 Nm (40 inch-pounds) before the force level on the head form test device exceeds 667 N (150 pounds); and (b) at 1.5 m/s (5 feet per second) the contact area on the head form test device surface shall not be less than 1 935 mm. (3 square inches). (12) When any point on the rear surface of a part of a seat back or restraining barrier within the leg protection zone is impacted from any direction by a knee form test device, as specified in the test methods referred to in subsection (2) at 4.88 m/s (16 feet per second) (a) the resisting force of the impacted material shall not exceed 2 669 N (600 pounds); and (b) the contact area on the knee form test device surface shall not be less than 1 935 mm2 (3 square inches). (13) Every school bus passenger seat shall be fastened to the floor of the bus by bolts that have nuts and locking devices such as lock washers.
Established bySOR/80-161 21 February, 1980 pursuant to sections 4 and 7 of the Motor Vehicle Safety Act, effective September 30, 1980 Schedule IV by adding heading and section 222. SOR/86-453 17 April, 1986 pursuant to sections 4 and 7 of the Motor Vehicle Safety Act Subsection 222(1) of Schedule IV by adding the definition "W"; subsections 222(2) and (3) of Schedule IV; paragraph 222(7)(b) of Schedule IV; subsection 222(7) of Schedule IV by adding paragraph (f); section 222 of Schedule IV by adding subsection (7.1); paragraph 222(8)(a) and (b) of Schedule IV; subsection 222(8) of Schedule IV by adding paragraph (f); section 222 of Schedule IV by adding subsection (8.1); subsection 222(10) of Schedule IV preceding paragraph (b); and paragraph 222(10)(c) of Schedule IV. PLEASE NOTE THAT THE MOTOR VEHICLE SAFETY ACT IS NOW CHAPTER M-10 OF THE REVISED STATUTES OF CANADA, 1985. SOR/91-593 24 October, 1991 pursuant to section 4 and 7 of the Motor Vehicle Safety Act Subsection 222(4) of Schedule IV; paragraph 222(6)(a) of Schedule IV; and section 222 of Schedule IV by adding subsection (13). |
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