Document ID: chunk:federal_register_of_legislation:F2023C00919:body:0:p79
Version: federal_register_of_legislation:F2023C00919
Segment Type: other
Provision Reference: 
Character Range: 233017–236121

provisions according to paragraph 6.22.6.1.2. above apply to each said beam's "cut-off" (if any), which is designed to project into the angular zone, as indicated under item 9.4. of the communication form conforming to the model in Annex 1 to Regulation No. 123.
6.22.6.2.                    Headlamp levelling device
6.22.6.2.1.              In the case where a headlamp levelling device is necessary to satisfy the requirements of paragraph 6.22.6.1.2., the device shall be automatic.
6.22.6.2.2.              In the event of a failure of this device, the passing-beam shall not assume a position in which the dip is less than it was at the time when the failure of the device occurred.
6.22.6.3.                    Horizontal orientation:
For each lighting unit the kink of the elbow of the cut-off line, if any, when projected on the screen, shall coincide with the vertical line through the reference axis of said lighting unit. A tolerance of 0.5 degree to that side which is the side of the traffic direction shall be allowed. Other lighting units shall be adjusted according to the applicant's specification, as defined according to Annex 10 of Regulation No. 123.
6.22.6.4.                    Measuring procedure:
After adjustment of the initial setting of beam orientation, the vertical inclination of the passing-beam or, when applicable, the vertical inclinations of all the different lighting units that provide or contribute to the cut-off(s) according to paragraph 6.22.6.1.2.1. above of the basic passing-beam, shall be verified for all loading conditions of the vehicle in accordance with the specifications in paragraphs 6.2.6.3.1. and 6.2.6.3.2. of this Regulation.
6.22.7.                          Electrical connections
6.22.7.1.                    Main-beam lighting (if provided by the AFS)
6.22.7.1.1.              The lighting units for the main-beam may be activated either simultaneously or in pairs. For changing over from the dipped-beam to the main-beam, at least one pair of lighting units for the main-beam shall be activated. For changing over from the main-beam to the dipped-beam, all lighting units for the main-beam shall be de-activated simultaneously.
6.22.7.1.2.              The main-beam may be designed to be adaptive, subject to the provisions in paragraph 6.22.9.3., the control signals being produced by a sensor system, which is capable of detecting and reacting to each of the following inputs:
(a) Ambient lighting conditions;
              (b) The light emitted by the front lighting devices and front light-signalling devices of oncoming vehicles;
(c) The light emitted by the rear light-signalling of preceding vehicles;
Additional sensor functions to improve performance are allowed.
For the purpose of this paragraph, "vehicles" means vehicles of categories L, M, N, O, T, as well as bicycles, such vehicles being equipped with retro-reflectors, with lighting and light-signalling devices, which are switched ON.
6.22.7.1.3.              It shall always be possible to switch the main-beam headlamps, adaptive or non-adaptive, ON and OFF manually and