Document ID: chunk:federal_register_of_legislation:F2024C00148:reg:9:p1
Version: federal_register_of_legislation:F2024C00148
Segment Type: reg
Provision Reference: reg 9 (pt 1/13)
Character Range: 68248–71313

9        80                    80

6.2.2.3.3.2. Luminance and contrast rendering
              For luminance and contrast rendering the following requirements shall apply:

(a) The minimum luminance contrast at the monitor (including any screen protector) reproducing a high contrast pattern shall be:
                  (i) For direct sunlight condition: 2:1;
                  (ii) For day condition with diffuse ambient light: 3:1;
                  (iii) For sunset condition: 2:1;
                  (iv) For night condition: 10:1 except in the case of Mirror and CMS dual function system of class I: 5:1.
(b) The night condition for the camera's field of view is replicated in a dark environment such that the maximum illuminance on the objects to be measured shall not exceed 2.0 lx;
(c) The background luminance of the monitor shall be limited under the night condition. The maximum background luminance under the night condition shall be less than 2.0 cd/m²;
(d) The instructions for use shall contain a note that sunlight or light from other intense light source upon the monitor reduces the luminance contrast which may require the driver to be particularly alert and attentive.
              6.2.2.3.3.2.1.  Day condition with diffuse sky-light exposure test

              For the day condition with diffuse sky-light exposure, the test method given in ISO 16505:2015, subclause 7.8.2., Test 2 shall be applied, but a value of 4,000 to 4,200 cd/m2 for luminance diffuse illuminator shall be used.

              At the request of the manufacturer, the value for luminance diffuse illuminator may be determined by using the diagram of figure below.

              Ratio of projected area vs. luminance of the diffuse illuminator

              Procedure for determining the ration of the projected area leaving the vehicle:

(a) Determine the projected area in the vehicle that represents the mirror reflected direction from the monitor extended isotropy range.
(b) Evaluation shall be made in the centre of the monitor defined size, under consideration of the monitor design viewing direction (see figure below).

              This projected area represents the 100 per cent of the surface to be considered.

              Based on virtual testing, evaluate the ratio of the projected area that leaves the vehicle openings (e.g. through a side door window, rear window or sunroof; however, for example a sunroof having an opaque shutter shall not be considered an opening).

              Case when the orientation of the mirror and CMS dual function system of Class I is adjustable:

              Based on virtual testing, if the applicant demonstrates that the Mirror and CMS dual function system of Class I adjustment range permits a driver to avoid any incident specular light from the vehicle opening while a driver's eye is within any fixed position of the standard isotropy range, then the value for luminance diffuse illuminator shall be the one of ISO 16505:2015 subclause 7.8.2., Test 2: 1,300 to 1,500 cd/m².

              6.2.2.3.3.3. Grey