Document ID: chunk:federal_register_of_legislation:F2023L01006:reg:780:p6
Version: federal_register_of_legislation:F2023L01006
Segment Type: reg
Provision Reference: reg 780 (pt 6/8)
Character Range: 91416–94339

equal to the vehicle width, measured along the rear axle. The dimensions shall be rounded up to the nearest 0,1 m. The figure below gives examples of different w_r. (Figure 1 and 2).
Figure 1
In the case of odd-numbered poles in the vehicle lateral direction (e.g. w_r=1.67m)

Figure 2
In the case of even-numbered poles in the vehicle lateral direction (e.g. w_r=1,74m)

         1.3.2. Minimum detection rate
         The minimum detection rate required for the rear horizontal area shall be as follows:
              (a) 90 percent for A1 as defined in paragraph 5.4.3. of ISO 17386:2010;

              (b) 87 percent for the rear-2 range in A2 as defined in paragraph 5.4.3. of ISO 17386:2010.

         There shall be no undetected hole larger than a square consisting of two-by-two grids.
         Here, the rear horizontal area test procedures shall be as per paragraph 7.3. of ISO 17386:2010.
         When the warning is provided for more than 5 seconds continuously, it is judged that the test object is detected. The detection test shall be performed 1 time for each test object. However, if necessary, according to the agreement of the Technical Service and manufacturer, it can be judged that the test object is detected in case warnings are provided in 4 out of 5 tests.
         1.4 Alternative (simplified) test method
         1.4.1. Field of detection
         The monitoring areas are the ten points shown in Figure 3 below within the monitoring area of paragraph 1.3.1.

Figure 3
         1.4.2. Minimum detection rate
         The minimum detection rate required for the area of ten points shall be 100%.
         When the warning is provided for more than five seconds continuously, it is judged that the test object is detected. The detection test shall be performed one time for each test object. However, if necessary, according to the agreement of the Technical Service and manufacturer, it can be judged that the test object is detected in case warnings are provided in four out of five tests.
         1.4.3. Self-test capabilities and failure indication
         As per paragraph 5.5. of ISO 17386:2010, the system shall provide self-test functions. It shall provide system failure information which complies with paragraph 17.2.5. of this Regulation, whenever a fault condition is detected.
         2. Response time
         2.1. Test conditions
              (a) The vehicle shall be left in a parked parking status until it is ensured that all electronic systems are de-activated; or for a minimum of 30 minutes.

              (b) It is permissible for the test person or equipment to be already situated within the vehicle.

              (c) Ensure the vehicle gear selector is in neutral or forward gear.

              (d) The test may start with opening the driver door. Once the door is opened, it shall be closed again.

         2.2. Test procedure
              (a) Place a test