Document ID: chunk:federal_register_of_legislation:F2006L02686:body:0:p3
Version: federal_register_of_legislation:F2006L02686
Segment Type: other
Provision Reference: 
Character Range: 7797–10715

area shall be as specified:
            (i) in clauses 8.3.2.1 and 8.3.2.1.1; or
            (ii) at the option of the 'Manufacturer' and in the case of passenger car windscreens only, clause 8.3.2.2.
8.3.2.1.                        The primary vision area shall include the area of the windscreen between a plane tangential to the top of the '95th Percentile Eye Ellipses', inclined 10 degrees above the horizontal measured parallel to the longitudinal axis of the vehicle, to a plane tangential to the bottom of the '95th Percentile Eye Ellipses', which includes a horizontal line at ground level transverse to the longitudinal axis of the vehicle and 11 m from the rearmost eye position on the '95th Percentile Eye Ellipses', measured horizontally and parallel to the longitudinal axis of the vehicle and between a vertical plane tangential to the outboard of the '95th Percentile Eye Ellipses' and inclined 15 degrees to the right, to a vertical plane tangential to the inboard of the '95th Percentile Eye Ellipses' and inclined 56 degrees to the left.
8.3.2.1.1.                  Notwithstanding the requirements of clause 8.3.2.1 it shall be permissible to exclude from the primary vision area, any area of glass within 65 mm of the upper and lower edges of the glass and 90 mm of the side edges of the glass.
8.3.2.2.                        The primary vision area shall be "Zone B" as specified in ECE R 43 "Safety Glazing"; Annex 12 ‑ "Procedure for Determining Test Areas on Passenger Car Windscreens in Relation to  the "V" Points" ‑‑paragraph 2.3, and referenced in Annex 3 ‑"General Test Conditions" ‑ paragraph 9.1.2.2.
8.3.2.2.1.                  There shall be not less than 75 per cent optical transmission below the plane defining the upper boundary of the primary vision area.
8.3.2.2.2.                  There shall be not less than 75 per cent optical transmission within "Zone B" as specified in clause 8.3.2.2.
8.3.3.                              Modified Zone For Heat‑treated Windscreens
8.3.3.1.                        For windscreens, heat‑treated safety glass shall have a zone of modified heat‑treatment which fractures into larger pieces than the remainder of the glass, thus affording a better view through the zone.  The area of the zone shall be not less than an ellipse, with a horizontal major axis, and a minor axis in a vertical plane parallel to the longitudinal axis of the vehicle and passing through a point midway between the rearmost eye positions of the '95th Percentile Eye Ellipses'.
8.3.3.2.                        The length of the major axis shall be at least 400 mm.  The minor axis shall extend at least between planes tangential to, the top and bottom of the '95th Percentile Eye Ellipses' and inclined at 3 degrees downwards from the horizontal.
8.3.3.3.                        Where the location of the zone as determined by clauses 8.3.3.1 and 8.3.3.2 would cause