Document ID: chunk:federal_register_of_legislation:F2017L01344:body:0:p11
Version: federal_register_of_legislation:F2017L01344
Segment Type: other
Provision Reference: 
Character Range: 29229–31934

or their locking devices during or after the tests prescribed in paragraphs 6.2. and 6.3. below. 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.
5.2.6. No release of the locking systems shall occur during the tests described in paragraph 6.3. below and in Annex 9, paragraph 2.1. to this Regulation.
5.2.7. After the tests, the displacement systems intended for permitting or facilitating the access of occupants shall be in working order; they shall be capable, at least once, of being unlocked and shall 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 below., no breakage of the seat or seat‑back has occurred: otherwise, it shall be shown that the seat is capable of meeting the test requirements set out in paragraph 6.2. below.
 In the case of seats (benches) with more places to sit than head restraints, the test described in paragraph 6.2. below shall be carried out.
5.3.  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.
 With the exception of the provisions of paragraph 5.1., the requirements also apply to side-facing seats of all categories of vehicles.
5.3.1.  Seats and bench seats shall be firmly attached to the vehicle.
5.3.2.  Sliding seats and bench seats shall be automatically lockable in all the positions provided.
5.3.3.  Adjustable seat-backs shall be lockable in all the positions provided.
5.3.4.  All seats which can be tipped forward or have fold-on backs and folding seats shall lock automatically in the position of use by occupants.
These requirements do not apply to folding seats fitted in wheelchair spaces or areas for standing passengers of vehicles of category M2 or M3 of
Class I, II or A and folding seat(s) fitted in the access passages of vehicles of category M2 or M3.
5.4.  Mounting of head restraints
5.4.1.  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.
5.4.2. A head restraint shall be mounted