Document ID: chunk:federal_register_of_legislation:F2019L00029:body:0:p14
Version: federal_register_of_legislation:F2019L00029
Segment Type: other
Provision Reference: 
Character Range: 36163–38692

the R point by the following three segments:
RZ: A segment of the torso line measured in an upward direction from R and 530 mm long;
ZX: A segment perpendicular to the median longitudinal plane of the vehicle, measured from point Z in the direction of the anchorage and 120 mm long;
XJ1: A segment perpendicular to the plane defined by segments RZ and ZX, measured in a forward direction from point X and 60 mm long.
 Point J2 is determined by symmetry with point J1 about the longitudinal vertical plane passing through the torso line described in paragraph 5.1.2. of the manikin positioned in the seat in question.
 Where a two-door configuration is used to provide access to both the front and rear seats and the upper anchorage is fitted to the "B" post, the system must be designed so as not to impede access to or egress from the vehicle.
5.4.3.2. The effective upper anchorage shall lie below the plane FN, which runs perpendicular to the longitudinal median plane of the seat and makes an angle of 65° with the torso line. The angle may be reduced to 60° in the case of rear seats. The plane FN shall be so placed as to intersect the torso line at a point D such that DR = 315 mm + 1.8 S. However, when S ≤ 200 mm, then DR = 675 mm.
5.4.3.3. The effective upper belt anchorage shall lie behind a plane FK running perpendicular to the longitudinal median plane of the seat and intersecting the torso line at an angle of 120° at a point B such that BR = 260 mm + S. Where S ≥ 280 mm, the manufacturer may use BR = 260 mm + 0.8 S at his discretion.
5.4.3.4. The value of S shall not be less than 140 mm.
5.4.3.5. The effective upper belt anchorage shall be situated to the rear of a vertical plane perpendicular to the median longitudinal plane of the vehicle and passing through the R point as shown in Annex 3.
5.4.3.6. The effective upper belt anchorage shall be situated above a horizontal plane passing through point C defined in paragraph 5.1.4.
5.4.3.6.1. Notwithstanding the requirements of paragraph 5.4.3.6 the effective upper belt anchorage for passenger seats of category M2 and M3 vehicles may be adjustable below that specification providing the following requirements are met:
                  (a) The safety belt or seat shall be permanently marked to identify the position of the effective upper belt anchorage that is required to satisfy the minimum upper anchorage height position required by paragraph 5.4.3.6. This marking shall clearly indicate to the user when the anchorage is in a position suitable