Document ID: chunk:federal_register_of_legislation:F2017L01344:body:0:p14
Version: federal_register_of_legislation:F2017L01344
Segment Type: other
Provision Reference: 
Character Range: 36339–38904

seat positions. Furthermore, by derogation to paragraph 5.6.3.2. above, there shall not be any "use position" resulting in a height lower than 700 mm.
5.6.5. By derogation to the height requirements mentioned in paragraphs 5.6.2. and 5.6.3.1. above, the height of any head restraint designed to be provided in rear centre seats or seating positions shall be not less than 700 mm.
5.7. In the case of a seat capable of being fitted with a head restraint, the provisions of paragraphs 5.2.3. and 5.5.2. above shall be verified.
5.7.1. The height of the part of the device on which the head rests, measured as described in paragraph 6.5. below, shall in the case of a head restraint adjustable for height be not less than 100 mm.
5.8. There shall be no gap of more than 60 mm between the seat-back and the head restraint in the case of a device not adjustable for height. If the head restraint is adjustable for height it shall, in its lowest position, be not more than 25 mm from the top of the seat‑back. In the case of seats or bench seats adjustable in height provided with separate head restraints, this requirement shall be verified for all the positions of the seat or bench seat.
5.9. In the case of head restraints integral with the seat‑back, the area to be considered is:
 Above a plane perpendicular to the reference line at 540 mm from the R point.
 Between two vertical longitudinal planes passing at 85 mm on either side of the reference line. In this area, one or more gaps which regardless of their shape can show a distance "a" of more than 60 mm when measured as described in paragraph 6.7. below, are permitted provided that, after the additional test under paragraph 6.4.3.3.2. below, the requirements of paragraph 5.12. below are still met.
5.10. In the case of head restraints adjustable for height one or more gaps, which regardless of their shape can show a distance "a" of more than 60 mm when measured as described in paragraph 6.7. below, are permitted on the part of the device serving as a head restraint provided that, after the additional test under paragraph 6.4.3.3.2. below, the requirements of paragraph 5.12. below are still met.
5.11. The width of the head restraint shall be such as to provide appropriate support for the head of a person normally seated. As determined according to the procedure described in paragraph 6.6. below, the head restraint shall cover an area extending not less than 85 mm to each side of the vertical median plane of the seat for which the head restraint is intended.
5.12. The head restraint and its