Document ID: chunk:federal_register_of_legislation:F2017C00972:body:0:p6
Version: federal_register_of_legislation:F2017C00972
Segment Type: other
Provision Reference: 
Character Range: 16605–19491

2.1. "Approval of a vehicle" means the approval of a vehicle type with regard to the strength of the seats and their anchorages, the design of the rear parts of the seat‑backs and the characteristics of their head restraints;

         2.2. "Vehicle type" means a category of motor vehicles which do not differ in such essential respects as:

         2.2.1. the structure, shape, dimensions, materials and the mass of the seats, although the seats may differ in covering and colour; differences not exceeding 5 per cent in the mass of the approved seat type shall not be considered significant;

         2.2.2.  the type and dimensions of the adjustment, displacement and locking systems of the seat‑back and seats and their parts;

         2.2.3 the type and dimensions of the seat anchorages;

         2.2.4. the dimensions, frame, materials and padding of head restraints, although they may differ in colour and covering;

        2.2.5. the type and dimensions of the attachments of the head restraint and the characteristics of the part of the vehicle to which the head restraint is attached, in the case of a separate head restraint;

        2.3. "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;

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

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

        2.6. "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:

2.6.1. longitudinal displacement;

2.6.2. vertical displacement;

2.6.3. angular displacement;

        2.7. "Displacement system" means a device by which the seat or one of its parts can be displaced and/or rotated, without a fixed intermediate position, to permit easy access of occupants to the space behind the seat concerned;

        2.8. "Locking system" means a device ensuring that the seat and its parts are maintained in the position of use;

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

        2.10. "Transverse plane" means a vertical plane perpendicular to the median longitudinal plane of the vehicle;

        2.11. "Longitudinal plane" means a plane parallel to the median longitudinal plane of the vehicle;

        2.12. "Head restraint" means a device whose purpose is to limit the rearward displacement of an adult occupant's head in relation to his torso in order to reduce the danger of injury to the cervical vertebrae in the event of an