Document ID: chunk:federal_register_of_legislation:F2019C00042:front:0:p8
Version: federal_register_of_legislation:F2019C00042
Segment Type: other
Provision Reference: 
Character Range: 24014–27060

the vehicle, by limiting the mobility of the wearer's body. Such an arrangement is generally referred to as a "belt assembly", which term also embraces any device for absorbing energy or for retracting the belt.

          The arrangement can be tested and approved as a safety-belt arrangement or as a restraint system.

         2.1.1. ULap beltU

          A two-point belt which passes across the front of the wearer's pelvic region.

         2.1.2. Diagonal beltU

          A belt which passes diagonally across the front of the chest from the hip to the opposite shoulder.

         2.1.3. Three‑point beltU

         A belt which is essentially a combination of a lap strap and a diagonal strap.

         2.1.4. S-type belt

         A belt arrangement other than a three-point belt or a lap belt.

         2.1.5. Harness beltU

         A S-type belt arrangement comprising a lap belt and shoulder straps; a harness belt may be provided with an additional crotch strap assembly.

         2.2. Belt typeU

         Belts of different "types" are belts differing substantially from one another; the differences may relate in particular to:

         2.2.1. rigid parts (buckle, attachments, retractor, etc.);

         2.2.2. the material, weave, dimensions and colour of the straps; or

         2.2.3. the geometry of the belt assembly.

         2.3. UStrapU

         A flexible component designed to hold the body and to transmit stresses to the belt anchorages.

         2.4. UBuckleU

         A quick‑release device enabling the wearer to be held by the belt. The buckle may incorporate the adjusting device, except in the case of a harness belt buckle.

         2.5. Belt adjusting deviceU

         A device enabling the belt to be adjusted according to the requirements of the individual wearer and to the position of the seat. The adjusting device may be part of the buckle, or a retractor, or any other part of the safety‑belt.

         2.6. Pre‑loading deviceU

         An additional or integrated device which tightens the seat‑belt webbing in order to reduce the slack of the belt during a crash sequence.

         2.7. "Reference zoneU" 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 head-form apparatus, 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.

         2.8. "Airbag assemblyU" means a device installed to supplement safety-belts and restraint systems in power-driven vehicles, i.e. system which, in the event of a severe impact affecting the vehicle automatically deploys a flexible structure intended to limit, by compression of the gas contained within it, the gravity of the contacts of one or more parts of the body of an occupant of the vehicle with the interior of the passenger compartment.

         2.9. "Passenger airbagU"