Document ID: chunk:federal_register_of_legislation:F2023C00919:body:0:p41
Version: federal_register_of_legislation:F2023C00919
Segment Type: other
Provision Reference: 
Character Range: 127371–130633

main-beam function is activated. This information shall remain displayed as long as the automatic operation is activated.
6.1.9.                              Other requirements
6.1.9.1.                        The aggregate maximum intensity of the main beam headlamps which can be switched on simultaneously shall not exceed 430,000 cd, which corresponds to a reference value of 100.
6.1.9.2.                        This maximum intensity shall be obtained by adding together the individual reference marks, which are indicated on the several headlamps. The reference mark "10" shall be given to each of the headlamps marked "R" or "CR".
6.1.9.3.                        Automatic activation and deactivation of the main-beam headlamps:
6.1.9.3.1.              The sensor system used to control the automatic activation and deactivation of the main-beam headlamps, as described in paragraph 6.1.7.1., shall comply with the following requirements:
6.1.9.3.1.1.              The boundaries of the minimum fields in which the sensor is able to detect light emitted from other vehicles defined in paragraph 6.1.7.1. above are defined by the angles indicated below.
6.1.9.3.1.1.1.              Horizontal angles: 15° to the left and 15° to the right.
              Vertical angles:

Upward angle                                                                5°
Mounting height of the sensor (centre of sensor aperture above the ground)  Less than 2 m  Between 1.5 m and 2.5 m  Greater than 2.0 m
Downward angle                                                              2°             2° to 5°                 5°

These angles are measured from the centre of the sensor aperture relative to a horizontal straight line through its centre and parallel to the longitudinal median plane of the vehicle.
6.1.9.3.1.2.              The sensor system shall be able to detect on a straight level road:
              (a) An oncoming power driven vehicle at a distance extending to at least 400 m;
              (b) A preceding power driven vehicle or a vehicle-trailers combination at a distance extending to at least 100 m;
              (c) An oncoming bicycle at a distance extending to at least 75 m, its illumination represented by a white lamp with a luminous intensity of 150 cd with a light emitting area of 10 cm² ± 3 cm² and a height above a ground of 0.8 m.
To verify compliance with (a) and (b) above, the oncoming and preceding power driven vehicle (or vehicle-trailer combination) shall have position lamps (if applicable) and dipped-beam headlamps switched ON.
6.1.9.3.2.              The transition from main-beam to dipped-beam and vice versa according to the conditions indicated in paragraph 6.1.7.1. above may be performed automatically and shall not cause discomfort, distraction or glare.
6.1.9.3.3.              The overall performance of the automatic control shall be verified by:
6.1.9.3.3.1.              Means of simulation or other means of verification accepted by the Type Approval Authority, as provided by the applicant.
6.1.9.3.3.2.              A test-drive according to paragraph 1 in Annex 12. The performance of the automatic control shall be documented and checked against the applicant's description. Any obvious malfunctioning shall