Document ID: chunk:federal_register_of_legislation:F2018L01521:front:0:p10
Version: federal_register_of_legislation:F2018L01521
Segment Type: other
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Character Range: 28265–31048

is within that space, unless it is invisible due to a blind spot(s) created by the A pillars, windscreen wipers, or steering wheel.
              If the driver's seat is located in the central driving position of the vehicle, the 1,200 mm tall cylindrical object shall be situated inside the space bounded by a vertical plane located 2,000 mm in front of the vehicle, a vertical plane located 2,300 mm in front of the vehicle, a vertical plane located 500 mm from the side of the vehicle (see Figure 2).

 Figure 1      Figure 2

         5.2.  Position of the V points
              5.2.1. The position of the V points in relation to the "R" point, as indicated by XYZ coordinates from the three dimensional reference grid, are as shown in Tables I and IV.
              5.2.2. Table I indicates the basic coordinates for a design seat-back angle of 25°. The positive direction for the coordinates is indicated in Annex 4, Appendix, Figure 1.

Table I
V-point  X      Y      Z
V1       68 mm  -5 mm  665 mm
V2       68 mm  -5 mm  589 mm

         5.3.  Position of the P points
              5.3.1.  The position of the P points in relation to the "R" point, as indicated by the XYZ coordinates from the three-dimensional reference grid, are as shown by Tables II, III and IV.
              5.3.1.1. Table II sets out the base coordinates for a design seat-back angle of 25°. The positive direction of the coordinates is set out in Annex 4, Appendix, Figure 1.
              The Pm point is the point of intersection between the straight line joining P1, P2 and the longitudinal vertical plane passing through the "R" point.

Table II
Point P  X         Y       Z
P1       35 mm     -20 mm  627 mm
P2       63 mm     47 mm   627 mm
Pm       43.36 mm  0 mm    627 mm

              5.3.1.2. Table III indicates the further corrections to be made to the X coordinates of P1 and P2 when the horizontal seat-adjustment range as defined in paragraph 2.16. above exceeds 108 mm. The positive direction for the coordinates is indicated in Annex 4, Appendix, Figure 1.

Table III
Horizontal seat-adjustment range  Δx
108 to 120 mm                     -13 mm
121 to 132 mm                     -22 mm
133 to 145 mm                     -32 mm
146 to 158 mm                     -42 mm
more than 158 mm                  -48 mm

         5.4.  Correction for design seat-back angles other than 25°
Table IV indicates the further corrections to be made to the X and Z coordinates of each P point and each V point when the design seat-back angle is not 25°. The positive direction for the coordinates is indicated in Annex 4, Appendix, Figure 1.

Table IV
 Seat-back angle   Horizontal coordinates   Vertical coordinates   Seat-back angle   Horizontal coordinates  Vertical coordinates