Document ID: chunk:federal_register_of_legislation:F2024C00147:body:0:p67
Version: federal_register_of_legislation:F2024C00147
Segment Type: other
Provision Reference: 
Character Range: 218102–221237

and parallel to the longitudinal axis of the vehicle, extending 2.4 metres out from the tangential plane 11 metres behind the driver's eyes, with the 'Seat' in the rearmost position.  The line of sight may be partially obscured by rear body or wheel guard contours.  A convex mirror complying with the technical requirements of Appendix A may be used instead of a flat mirror.
2.3.1.2.                        Mounting - The mirror mounting shall provide a stable support for the mirror and neither the mirror nor the mounting shall protrude further than the widest part of the vehicle body, except to the extent necessary to produce a field of view meeting the requirements of Clause 2.3.1.1. The mirror shall not be obscured by the unwiped portion of the windscreen, and shall be adjustable from the driver's seating position.  The mirror and mounting shall be free of sharp points or edges that could contribute to pedestrian injury.
2.3.2.                              Passenger's Side
2.3.2.1.                        Where a left-hand external mirror is provided in compliance with Clause 2.1 its mounting shall provide a stable support for the mirror. The mirror and mounting shall be free of sharp points or edges that could contribute to pedestrian injury.  The mirror need not be adjustable from the driver's seating position, but shall be capable of adjustment by tilting in both horizontal and vertical directions.
2.3.2.2.                        The mirror shall be flat or convex.
2.3.2.3.                        For 'Convex Mirrors' the reflective surface area is to be equal to or greater than that of a flat mirror required to meet the field of view requirements set out in Clause 2.3.1.1.
2.4.                                    Mirror Construction
2.4.1.                              Reflectance
          The reflectance value of the reflective film employed shall be at least 35 per cent.  If a mirror is of the selective position prismatic type, the reflectance value in the night driving position shall be at least 4 per cent.
2.4.2.                              'Convex Mirrors'
          Each motor vehicle using a 'Convex Mirror' to meet the requirements of Clause 2.3.2 shall comply with the following requirements:
2.4.2.1.                        the radii of curvature shall not deviate by more than plus or minus 15 per cent from the average radius of curvature when measured in accordance with the procedures specified in Annex 1.
2.4.2.2.                        the average radius of curvature is not to be less than 1,200 mm.
2.5.                                    Test  Procedure
2.5.1.                              Reflectance shall be determined in accordance with SAE document J964a "Test Procedure for Determining Reflectivity of Rearview Mirror", August, 1974.
2.5.2.                              The horizontal angle is measured from the projected eye point rather than the plane of the mirror.
3.                                          REQUIREMENTS FOR VEHICLES OF CATEGORY LEG; NA AND MD2 ONLY
          Vehicles of category NA, LEG and MD2 shall have mirrors which comply with Clause 2 or 4.