Document ID: chunk:federal_register_of_legislation:F2019C00053:reg:38:p2
Version: federal_register_of_legislation:F2019C00053
Segment Type: reg
Provision Reference: reg 38 (pt 2/5)
Character Range: 125485–128702

- 90° in the case of seats on M2 and M3 vehicles.

 Annex 7

                      DYNAMIC TEST AS AN ALTERNATIVE TO THE SAFETY-BELT ANCHORAGES STATIC STRENGTH TEST

         1. SCOPE

        This annex describes a dynamic sled test that can be performed as an alternative to the safety-belt anchorages static strength test prescribed in paragraphs 6.3. and 6.4. of this Regulation.

        This alternative can apply at the request of the car manufacturer in the case of a group of seats where all the seating positions are equipped with 3-point safety-belts to which thorax load limiter functions are associated and when the group of seats additionally comprises a seating position for which the upper safety-belt anchorage is located on the seat structure.

        2.                               PRESCRIPTIONS

        2.1.                         In the dynamic test prescribed in paragraph 3. of this annex, there shall be no rupture of any anchorage or surrounding area. A programmed rupture necessary for the functioning of the load limiter device is however permitted.

        The minimum spacings for the effective  lower  anchorages  specified  in paragraph 5.4.2.5. of this Regulation, and the requirements for the effective upper anchorages specified in paragraph 5.4.3.6. of this Regulation and, when applicable, completed by the following paragraph 2.1.1., shall be respected.

        2.1.1.                   For vehicles of category M1 of a total permissible mass not exceeding 2.5 tonnes, the upper safety-belt anchorage, if attached to the seat structure, shall not be displaced forward of a transverse plane passing through the R point and point C of the seat in question (see figure 1 of annex 3 to this Regulation).

        For vehicles other than mentioned above, the upper safety-belt anchorage shall not be displaced forward of a transverse plane inclined 10° in forward direction and passing through the R point of the seat.

        2.2.                         In vehicles where such devices are used, the displacement and locking devices enabling the occupants of all seats to leave the vehicle must still be operable by hand after  the test.

        2.3.                         The vehicle owner's manual shall include indications that each safety-belt shall only be replaced by an approved safety-belt for the considered seating position in the vehicle, and shall in particular identify those seating positions which may only be fitted with an appropriate safety-belt equipped with a load limiter.

        3.                               DYNAMIC TEST CONDITIONS

        3.1.                         General conditions

        The general conditions described in paragraph 6.1. of this Regulation apply to the test described in this annex.

        3.2.                         Installation and preparation

        3.2.1.                   Sled

        The sled must be so constructed that no permanent deformation appears after the test. It must be so guided that, during the impact phase, the deviation does not exceed 5° in the vertical plane and 2° in the horizontal plane.

        3.2.2.                   Securing of the vehicle structure

        The part of