Document ID: chunk:federal_register_of_legislation:F2017C00972:body:0:p12
Version: federal_register_of_legislation:F2017C00972
Segment Type: other
Provision Reference: 
Character Range: 32377–35026

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. Special requirements for seats fitted or capable of being fitted with head restraints

        5.4.1. The presence of the head restraint must not be an additional cause of danger to occupants of the vehicle.  In particular, it shall not in any position of use exhibit any dangerous roughness or sharp edge liable to increase the risk or seriousness of injury to the occupants.

        5.4.2. Parts of the front and rear faces of the head restraints situated in area 1, as defined in paragraph 6.8.1.1.3. below shall pass the energy absorption test.

        5.4.2.1. This requirement is deemed to be met if in the tests carried out by the procedure specified in annex 6 the deceleration of the headform does not exceed 80 g continuously for more than 3 ms.  Moreover, no dangerous edge shall occur during or remain after the test.

        5.4.3. Parts of the front and rear faces of head restraints situated in area 2, as defined in paragraph 6.8.1.2.2. below, shall be so padded as to prevent any direct contact of the head with the components of the structure and shall meet the requirements of paragraph 5.1.4. above applicable to the rear parts of seats situated in area 2.

        5.4.4. The requirements of paragraphs 5.4.2. and 5.4.3. above, shall not apply to parts of rear faces of head restraints designed to be fitted to seats behind which no seat is provided.

        5.4.5. The head restraint shall be secured to the seat or to the vehicle structure in such a way that no rigid and dangerous parts project from the padding of the head restraint or from its attachment to the seat‑back as a result of the pressure exerted by the headform during the test.

        5.4.6. In the case of a seat fitted with a head restraint, the provisions of paragraph 5.1.3. may, after agreement of the technical service, be considered to be met if the seat fitted with its head restraint complies with the provisions of paragraph 5.4.2. above.

5.5. Height of head restraints

        5.5.1. The height of head restraints shall be measured as described in paragraph 6.5. below.

        5.5.2. For head restraints not adjustable for height, the height shall be not less than 800 mm in the case of front seats and 750 mm in the case of other seats.

5.5.3. For head restraints adjustable for height:

        5.5.3.1. the height shall be not less than 800 mm in the case of front seats and 750 mm in the case