Document ID: chunk:federal_register_of_legislation:F2017C00972:body:0:p10
Version: federal_register_of_legislation:F2017C00972
Segment Type: other
Provision Reference: 
Character Range: 27258–30007

in paragraph 2.7. shall be placed on the outside of the seat close to the door.  It shall be easily accessible, even to the occupant of the seat immediately behind the seat concerned.

        5.1.3. The rear parts of seats situated in area 1, defined in paragraph 6.8.1.1. shall pass the energy dissipation test in accordance with the requirements of annex 6 to this Regulation.

        5.1.3.1. 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.

        5.1.3.2. The requirements of paragraph 5.1.3. shall not apply to rearmost seats or to back‑to‑back seats.

        5.1.4. The surface of the rear parts of seats shall exhibit no dangerous roughness or sharp edges likely to increase the risk of severity of injury to the occupants.  This requirement is considered as satisfied if the surface of the rear parts of seats tested in the conditions specified in paragraph 6.1. exhibit radii of curvature not less than:

 2.5 mm in area 1,

 5.0 mm in area 2,
 3.2 mm in area 3.

 These areas are defined in paragraph 6.8.1.

5.1.4.1. This requirement does not apply to:

        5.1.4.1.1. the parts of the different areas exhibiting a projection of less than 3.2 mm from the surrounding surface, which shall exhibit blunted edges, provided that the height of the projection is not more than half its width;

        5.1.4.1.2. rearmost seats and back‑to‑back seats;

        5.1.4.1.3. Rear parts of seats situated below a horizontal plane passing through the lowest R point in each row of seats.  (Where rows of seats have different heights, starting from the rear, the plane shall be turned up or down forming a vertical step passing through the R point of the row of seats immediately in front);

5.1.4.1.4. parts such as "flexible wire mesh".

        5.1.4.2. In area 2, defined in paragraph 6.8.1.2., surfaces may exhibit radii less than 5 mm, but not less than 2.5 mm provided that they pass the energy‑dissipation test prescribed in annex 6 to this Regulation.  Moreover, these surfaces must be padded to avoid direct contact of the head with the seat frame structure.

        5.1.4.3. If the areas defined above contain parts covered with material softer than 50 Shore A hardness, the above requirements, with the exception of those relating to the energy‑dissipation test in 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