Document ID: chunk:federal_register_of_legislation:F2005L03990:front:0:p16
Version: federal_register_of_legislation:F2005L03990
Segment Type: other
Provision Reference: 
Character Range: 39635–42435

of a seating position:
2.1.1. the "H" point and the "R" point and their relationship,
2.1.2. the actual torso angle and the design torso angle and their relationship.
2.2. "Three-dimensional 'H' point machine"
 (3-D H machine) means the device used for the determination of "H" points and actual torso angles. This device is described in appendix 1 to this annex;
2.3. "'H' point"
 means the pivot centre of the torso and the thigh of the 3-D H machine installed in the vehicle seat in accordance with paragraph 4 below. The "H" point is located in the centre of the centreline of the device which is between the "H" point sight buttons on either side of the 3-D H machine. The "H" point corresponds theoretically to the "R" point (for tolerances see paragraph 3.2.2.below). Once determined in accordance with the procedure described in paragraph 4, the "H" point is considered fixed in relation to the seat-cushion structure and to move with it when the seat is adjusted;
2.4. "'R' point" or "seating reference point"
 means a design point defined by the vehicle manufacturer for each seating position and established with respect to the three-dimensional reference system;
2.5. "Torso-line"
 means the centreline of the probe of the 3-D H machine with the probe in the fully rearward position;
2.6. "Actual torso angle"
 means the angle measured between a vertical line through the "H" point and the torso line using the back angle quadrant on the 3-D H machine. The actual torso angle corresponds theoretically to the design torso angle (for tolerances see paragraph 3.2.2. below):
2.7. "Design torso angle"
 means the angle measured between a vertical line through the "R" point and the torso line in a position which corresponds to the design position of the seat-back established by the vehicle manufacturer;
2.8. "Centreplane of occupant"
 (C/LO) means the median plane of the 3-D H machine positioned in each designated seating position; it is represented by the co-ordinate of the "H" point on the "Y" axis. For individual seats, the centreplane of the seat coincides with the centreplane of the occupant. For other seats, the centreplane of the occupant is specified by the manufacturer;
2.9. "Three-dimensional reference system"
 means a system as described in appendix 2 to this annex;
2.10. "Fiducial marks"
 are physical points (holes, surfaces, marks or indentations) on the vehicle body as defined by the manufacturer;
2.11. "Vehicle measuring attitude"
 means the position of the vehicle as defined by the co-ordinates of fiducial marks in the three-dimensional reference system.
3. REQUIREMENTS
3.1. Data presentation
 For each seating position where reference data are required in order to demonstrate compliance with the provisions of the present Regulation, all or an appropriate