Motor Vehicle Safety Regulations — 201
201 (1) In this section, head impact area means the non-glazed surfaces of the interior of the vehicle that are capable of being contacted statically by the head form of a measuring device in accordance with the following procedure or its graphic equivalent: (a) at each designated seating position, by placing the pivot point of the measuring device, (i) for seats that are adjustable fore and aft, at (A) the seating reference point, and (B) a point 130 mm (five inches) horizontally forward of the seating reference point displaced vertically 20 mm (0.75 inches) or a distance equal to the rise that results from a 130 mm (five inches) forward adjustment of the seat, and (ii) for seats that are not adjustable fore and aft, at the seating reference point, (b) with the pivot point to top-of-head dimension at each adjustment allowed for the measuring device by the interior dimension of the vehicle, by determining all contact points above the lower windshield glass line and forward of the seating reference point, and (c) beginning with the head form of the measuring device at each contact point referred to in paragraph (b) and with the measuring device in a vertical position if no contact point exists for a particular adjusted length, by pivoting the measuring device forward and downward through all arcs in vertical planes to 90° each side of the longitudinal plane through the seating reference point until the head form contacts an interior surface or until it is tangent to a horizontal plane 25 mm (1 inch) above the seating reference point, whichever occurs first; ( zone d’impact de la tête ) interior compartment door means any door in the interior of a vehicle installed by the manufacturer as a cover for storage space normally used for personal effects; ( porte de compartiment intérieur ) measuring device means a device having a spherical head form with a diameter of 165 mm (6.5 inches) attached to a pivot, with the distance between the pivot point and the top of the head form being adjustable at any point between 740 mm (29 inches) and 840 mm (33 inches); ( appareil de mesure ) pelvic impact area means that area of the door or body side panel adjacent to any outboard designated seating position that is bounded by: (a) horizontal planes 180 mm (seven inches) above and 100 mm (four inches) below the seating reference point, and (b) vertical transverse planes 200 mm (eight inches) forward and 50 mm (two inches) rearward of the seating reference point. ( zone d’impact pelvienne ) (2) This section applies to passenger cars and to multi-purpose passenger vehicles, trucks and buses with a GVWR of 4 536 kg (10,000 pounds) or less. (3) Subject to subsection (3.2), the instrument panel of a vehicle shall be constructed so that the deceleration of a spherical head form with a weight of 6,8 kg (15 pounds) and a diameter of 165 mm (6.5 inches) does not exceed 80 g continuously for more than 3 ms when the area of the instrument panel that is within the head impact area is impacted in accordance with the test procedure referred to in subsection (3.1) at a relative velocity of (a) 19.3 km/h, in the case of a vehicle that is equipped, at the right front outboard designated seating position, with an air bag and a Type 2 manual seat belt assembly that conform to section 208; and (b) 24 km/h (15 mph), in the case of any other vehicle. (3.1) The test of the instrument panel shall be performed in accordance with SAE Recommended Practice, “Motor Vehicle Instrument Panel Laboratory Impact Test Procedure — Head Area — SAE J921b” (November 1971) and using the instrumentation whose performance is specified in SAE Recommended Practice, “Instrumentation For Impact Tests — SAE J211” (October 1988) except that (a) the origin of the line tangent to the surface of the instrument panel shall be a point on a transverse horizontal line through a point 130 mm (5 inches) horizontally forward of the seating reference point of the front outboard designated seating positio