Document ID: chunk:federal_register_of_legislation:F2017C00972:body:0:p11
Version: federal_register_of_legislation:F2017C00972
Segment Type: other
Provision Reference: 
Character Range: 29760–32617

accordance with the requirements of annex6, shall apply only to the rigid parts.

        5.1.5. No failure shall be shown in the seat frame or in the seat anchorage, the adjustment and displacement systems or their locking devices during or after the tests prescribed in paragraphs 6.2. and 6.3.  Permanent deformations, including ruptures, may be accepted, provided that these do not increase the risk of injury in the event of a collision and the prescribed loads were sustained.

        5.1.6. No release of the locking systems shall occur during the tests described in paragraph 6.3. and in annex 9, paragraph 2.1.

         5.1.7. After the tests, the displacement systems intended for permitting or facilitating the access of occupants must be in working order; they must be capable, at least once, of being unlocked and must permit the displacement of the seat or the part of the seat for which they are intended.

          Any other displacement systems, as well as adjustment systems and their locking systems are not required to be in working order.

          In the case of seats provided with head restraints, the strength of the seat‑back and of its locking devices is deemed to meet the requirements set out in paragraph 6.2. when, after testing in accordance with paragraph 6.4.3.6., no breakage of the seat or seat‑back has occurred:  otherwise, it must be shown that the seat is capable of meeting the test requirements set out in paragraph 6.2.

          In the case of seats (benches) with more places to sit than head restraints, the test described in paragraph 6.2. shall be carried out.

         5.2.  General specifications applicable to seats of vehicles of
         categories N1, N2 and N3 and to seats of vehicles of categories M2 and M3 not covered by Regulation No. 80

         5.2.1.  Seats and bench seats must be firmly attached to the vehicle.

         5.2.2.  Sliding seats and bench seats must be automatically lockable in all the positions provided.

         5.2.3.  Adjustable seat-backs must be lockable in all the positions provided.

         5.2.4.  All seats which can be tipped forward or have fold-on backs must lock automatically in the normal position.

         5.3.  Mounting of head restraints

         5.3.1.  A head restraint shall be mounted on every outboard front seat in every vehicle of category M1.  Seats fitted with head restraints, intended for fitment in other seating positions and in other categories of vehicles may also be approved to this Regulation.

         5.3.2.  A head restraint shall be mounted on every outboard front seat in every vehicle of category M2 with a maximum mass not exceeding 3500 kg and of category N1; head restraints mounted in such vehicles shall comply with the requirements of Regulation No. 25, as amended by the 03 series of amendments.

        5.4.