Document ID: chunk:federal_register_of_legislation:F2019C00053:front:0:p7
Version: federal_register_of_legislation:F2019C00053
Segment Type: other
Provision Reference: 
Character Range: 21849–24996

transverse members;

2.6.                               "Seat" means a structure which may or may not be integral with the  vehicle structure complete with trim, intended to seat one adult person. The term covers both an individual seat or part of a bench seat intended to seat one person;

2.6.1.                         "Front passenger seat" means any seat where the "foremost H point" of the seat in question is in or in front of the vertical transverse plane through the driver's R point;

2.7.                               "Group of seats" means either a bench-type seat, or seats which are separate but side by side (i.e. with the foremost anchorages of one seat in line with or forward of the rearmost anchorages and in line with or behind the foremost anchorages of another seat) and accommodate one or more seated adult person;

2.8.                               "Bench seat" means a structure complete with trim, intended to seat more than one adult person;

2.9.                               "Folding seat" means an auxiliary seat intended for occasional use which is normally folded;

2.10.                           "Seat type" means a category of seats which do not differ in such essential respects as:

2.10.1.                     the shape, dimensions and materials of the seat structure,

2.10.2.                     the types and dimensions of the adjustment systems and all locking systems,

2.10.3.                     the type and dimensions of the belt anchorages on the seat, of the seat anchorage and of the affected parts of the vehicle structure;

2.11.                           "Seat anchorage" means the system by which the seat assembly is secured to the vehicle structure, including the affected parts of the vehicle structure;

2.12.                           "Adjustment system" means the device by which the seat or its parts  can  be adjusted to a position suited to the morphology of the seated occupant; this device may, in particular, permit of:

         2.12.1.                     longitudinal displacement; vertical displacement;

         2.12.2.                     angular displacement;

2.13.                           "Displacement system" means a device enabling the seat or one of its parts to be displaced or rotated without a fixed intermediate position, to permit easy access to the space behind the seat concerned;

2.14.                           "Locking system" means any device ensuring that the seat and its parts are maintained in any position of use and includes devices to lock both the seat back relative to the seat and the seat relative to the vehicle.

2.15.                           "Reference zone" means the space between two vertical longitudinal planes, 400 mm apart and symmetrical with respect to the H point, and defined by rotation from vertical to horizontal of the headform apparatus, as described in Regulation No. 21, annex 1. The apparatus shall be positioned as described in that annex to Regulation No. 21 and set to the maximum length of 840 mm.

2.16.                           "Thorax load limiter function" means any part of the safety-belt and/or the seat