Document ID: chunk:federal_register_of_legislation:F2024C00148:reg:1:p13
Version: federal_register_of_legislation:F2024C00148
Segment Type: reg
Provision Reference: reg 1 (pt 13/34)
Character Range: 167222–170633

during this temporarily modified view.

              The operation of this function shall be intuitive to the driver and not cause additional safety risks such as additional blind spots. In the case of articulated vehicles, this includes an adaptation of the modified view to cover the full length of the vehicle combination. The operation of the function shall cease, when the maneuver has been completed and the CMS shall return to the default view.

              It shall be indicated to the driver, that a temporarily modified view is displayed. At any time, the driver shall be able to deactivate the function. The operator's manual shall inform the driver accordingly."

              The vehicle manufacturer shall demonstrate the improvement of the view by an analysis to the satisfaction of the Technical Service and the Type Approval Authority.
              16.1.1.2. Luminance and contrast adjustment

              If manual adjustment is provided, the operator's manual shall provide information on how to change the luminance/contrast.

16.1.1.3. Overlay requirements within the minimum required field of vision
Overlays shall display only safety-related rearward vision information.
              All overlays shall be considered as an obstruction regardless of their transparency.

              Each overlay shall not exceed 2.5 per cent of the required field of view displayed surface of the corresponding class.

              The total surface of all obstructions shall not exceed the provision of paragraph 15.2.4.9.1. or 15.2.4.9.2. at the same time.

              Overlay and any other obstruction surface shall be determined (for example on screenshots) taking into account the worst case(s).

              16.1.2. Operating readiness (System availability)

               Non-operation of the system shall be recognizable to the driver is (e.g. CMS failure by, i.e. warning indication, display information, absence of status indicator). The information for the driver shall be explained in the operator's manual.

              16.1.3. Magnification and resolution

              16.1.3.1. Magnification factor

              The minimum and the average magnification factors of the CMS, in both horizontal and vertical directions shall not be lower than magnification factors indicated below.

              The minimum magnification factor shall not be less than:

              (a) for Class I: 0.31;

              (b) for Class II (driver's side): 0.26;

              (c) for Class III (driver's side): 0.29;

              (d) for Class IV (driver's side): 0.054;

              (e) for Class II (passenger's side): 0.13;

              (f) for Class III (passenger's side): 0.19;

              (g) for Class IV (passenger's side): 0.016.

              The average magnification factor shall not be less than:

              (h) for Class I: 0.33;

              (i) for Class II (driver's side): 0.31;

              (j) for Class III (driver's side): 0.31;

              (k) for Class IV (driver's side): 0.091;

              (l) for Class II (passenger's side): 0.16;

              (m) for Class III (passenger's side): 0.20;

              (n) for Class IV (passenger's side): 0.046.

       16.1.3.2. Resolution (MTF)

              The resolution (MTF) defines the minimum distinguishable details observable in an image as is represented by the MTF10. For reasons