Document ID: chunk:federal_register_of_legislation:F2019L00029:body:0:p13
Version: federal_register_of_legislation:F2019L00029
Segment Type: other
Provision Reference: 
Character Range: 33886–36386

is constant in all normal positions of use, its value shall be 60 ± 10° (e.g. anchorage fixed at the seat).
5.4.2.4. Rear seats and special front or rear seats, vehicle categories other than M1
In vehicles of categories other than M1, in the case of:
(a) Bench seats,
                  (b) Adjustable seats (front and rear) with an adjusting system with a seatback angle of less than 20° (see Annex 3, Figure 1), and
(c) Other rear seats,
 Angles α1 and α2 may be between 20° and 80° in any normal position of use. Where in the case of front seats of vehicles having a maximum vehicle mass not exceeding 3.5 tonnes at least one of the angles α1 and α2 is constant in all normal positions of use, its value shall be 60 ± 10° (e.g. anchorage fixed at the seat).
 In the case of seats, other than front seats, of vehicles in categories M2 and M3, the angles α1 and α2 shall be between 45 and 90 degrees for all normal positions of use.
5.4.2.5. The distance between the two vertical planes parallel to the median vertical longitudinal plane of the vehicle and each passing through a different one of the two effective lower belt anchorages L1 and L2 of the same safety-belt shall not be less than 350 mm. In the case of side-facing seats the distance between the two vertical planes parallel to the median vertical longitudinal plane of the seat and each passing through a different one of the two effective lower belt anchorages L1 and L2 of the same safety-belt shall not be less than 350 mm. In the case of any central seating positions in rear rows of seats of vehicles of category M1 and N1, the above-mentioned distance shall be not less than 240 mm, provided that it is not possible to exchange the centre rear seat with any of the other seats of the vehicle. The median longitudinal plane of the seat shall pass between points L1 and L2 and shall be at least 120 mm from these points.
5.4.3. Location of the effective upper belt anchorages (see Annex 3)
5.4.3.1. If a strap guide or similar device is used which affects the location of the effective upper belt anchorage, this location shall be determined in a conventional way by considering the position of the anchorage when the longitudinal centre line of the strap passes through a point J1 defined successively from 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