Document ID: chunk:federal_register_of_legislation:F2023C00919:body:0:p44
Version: federal_register_of_legislation:F2023C00919
Segment Type: other
Provision Reference: 
Character Range: 135774–138871

shall be between: -1.5 per cent and -3.5 per cent.
The initial aim shall be set between: -2 per cent and -2.5 per cent.

6.2.6.2.                        Headlamp levelling device
6.2.6.2.1.              In the case where a headlamp levelling device is necessary to satisfy the requirements of paragraphs 6.2.6.1.1. and 6.2.6.1.2., the device shall be automatic.
6.2.6.2.2.              However, devices which are adjusted manually, either continuously or non-continuously, shall be permitted, provided they have a stop position at which the lamps can be returned to the initial inclination defined in paragraph 6.2.6.1.1. by means of the usual adjusting screws or similar means.
These manually adjustable devices shall be operable from the driver's seat.
Continually adjustable devices shall have reference marks indicating the loading conditions that require adjustment of the dipped-beam.
The number of positions on devices, which are not continuously adjustable, shall be such as to ensure compliance with the range of values prescribed in paragraph 6.2.6.1.2. in all the loading conditions defined in Annex 5.
For these devices also, the loading conditions of Annex 5 that require adjustment of the dipped-beam shall be clearly marked near the control of the device (Annex 8).
6.2.6.2.3.              In the event of a failure of devices described in paragraphs 6.2.6.2.1. and 6.2.6.2.2., the dipped-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.
6.2.6.3.                        Measuring procedure
6.2.6.3.1.              After adjustment of the initial inclination, the vertical inclination of the dipped-beam, expressed in per cent, shall be measured in static conditions under all the loading conditions defined in Annex 5.
6.2.6.3.2.              The measurement of the variation of dipped beam inclination as a function of load shall be carried out in accordance with the test procedure set out in Annex 6.
6.2.6.4.                        Horizontal orientation
The horizontal orientation of one or both dipped-beam headlamps may be varied to produce bend lighting, provided that if the whole beam or the kink of the elbow of the cut-off is moved, the kink of the elbow of the cut-off shall not intersect the line of the trajectory of the centre of gravity of the vehicle at distances from the front of the vehicle which are larger than 100 times the mounting height of the respective dipped-beam headlamps.
6.2.7.                              Electrical connections
6.2.7.1.                        The control for changing over to the dipped-beam shall switch off all main-beam headlamps simultaneously.
6.2.7.2.                        The dipped-beam may remain switched on at the same time as the main beams.
6.2.7.3.                        In the case of dipped-beam headlamps according to Regulation No. 98, the gas-discharge light sources shall remain switched on during the main-beam operation.
6.2.7.4.                        One additional light source or one or more LED module(s), located inside the