Document ID: chunk:federal_register_of_legislation:F2018L01521:reg:22:p1
Version: federal_register_of_legislation:F2018L01521
Segment Type: reg
Provision Reference: reg 22 (pt 1/6)
Character Range: 33124–35909

22                 -26 mm                   7 mm                   40                123 mm                  -52 mm

         5.5.  Position of the E points
         5.5.1.  E1 and E2 points are each 104 mm from P1.
            E2 is 65 mm from E1 (see Annex 4, Appendix, Figure 4).
              5.5.2.  The straight line joining E1 and E2 is rotated about P1 until the tangent joining E1 to the outer edge of Section 2 of the "A" pillar on the driver's side is normal to the straight line E1 - E2 (see Annex 4, Appendix, Figure 3).
              5.5.3.  E3 and E4 are each 104 mm from point P2. E3 is 65 mm from E4 (see Annex 4, Appendix, Figure 4).
              5.5.4.  The straight line E3 - E4 is rotated about P2 until the tangent joining E4 to the outer edge of Section 2 of the "A" pillar on the passenger's side is normal to the straight line E3 - E4 (see Annex 4, Appendix, Figure 3).
6.  Test procedure
         6.1.  Driver's field of vision
              6.1.1.  The dimensional relationships between the vehicle's primary reference marks and the three - dimensional reference grid shall be determined by the procedure prescribed in Annex 4.
              6.1.2.  The position of the points V1 and V2 is determined in relation to the "R" point as indicated by the XYZ coordinates of the three‑dimensional reference grid and are shown in Table I under paragraph 5.2.2. above and Table IV under paragraph 5.4. above. The windscreen datum points shall then be found from the corrected V points as prescribed in paragraph 5.1.1. above.
              6.1.3.  The relationship between the P points, the "R" point, and the centre‑line of the driver's seating position, as indicated by XYZ coordinates from the three‑dimensional reference grid, shall be determined from Tables II and III in paragraph 5.3. above. The correction for design seat‑back angles other than 25° is shown in Table IV under paragraph 5.4. above.
              6.1.4.  The angle of obstruction (see paragraph 5.1.2. above) shall be measured in the inclined planes, as indicated in Annex 4, Appendix, Figure 2. The relationship between P1 and P2, which are connected to E1 and E2 and E3 and E4 respectively, is shown in Annex 4, Appendix, Figure 5.
              6.1.4.1. Straight line E1 - E2 shall be set as described in paragraph 5.5.2. above. The angle of obstruction of the "A" pillar on the driver's side shall be measured as specified in paragraph 5.1.2.1.1. above.
              6.1.4.2. Straight line E3 - E4 shall be set as described in paragraph 5.5.4. above. The angle of obstruction of the "A" pillar on the passenger side shall then be measured as specified in paragraph 5.1.2.1.2. above.
              6.1.5.  The manufacturer may measure the angle of obstruction either on the vehicle or in