Document ID: chunk:federal_register_of_legislation:F2023C00919:body:0:p77
Version: federal_register_of_legislation:F2023C00919
Segment Type: other
Provision Reference: 
Character Range: 227531–230533

at least 60 mm in width.
6.22.                                Adaptive front lighting system (AFS) (Regulation No. 123)
Where not otherwise specified below, the requirements for main-beam headlamps (paragraph 6.1.) and for dipped-beam headlamps (paragraph 6.2.) of this Regulation apply to the relevant part of the AFS.
6.22.1.                          Presence
Optional on motor vehicles. Prohibited on trailers.
6.22.2.                          Number
One.
6.22.3.                          Arrangement
No special requirements.
6.22.4.                          Position
 The AFS shall, prior to the subsequent test procedures, be set to the neutral state;
6.22.4.1.                    In width and height:
For a given lighting function or mode the requirements indicated in the paragraphs 6.22.4.1.1. through 6.22.4.1.4. below shall be fulfilled by those lighting units which are energized simultaneously for that lighting function or mode of a function, according to the applicant's description.
All dimensions refer to the nearest edge of the apparent surface(s) observed in the direction of the reference axis, of the lighting unit(s).
6.22.4.1.1.              Two symmetrically placed lighting units shall be positioned at a height in compliance with the requirements of the relevant paragraphs 6.1.4. and 6.2.4., where "Two symmetrically placed lighting units" shall be understood to be two lighting units, one on each side of the vehicle, positioned such that the (geometric) centres of gravity of their apparent surfaces are at the same height and at the same distance from the vehicle's longitudinal median plane within a tolerance of 50 mm, each; their light emitting surfaces, illuminating surfaces, and light outputs, however, may differ.
6.22.4.1.2.              Additional lighting units, if any, on either side of the vehicle shall be positioned at a distance not exceeding 140 mm[17] in horizontal direction (E in the figure) and 400 mm in vertical direction above or below (D in the figure) from the nearest lighting unit;
6.22.4.1.3.              None of the additional lighting units described in paragraph 6.22.4.1.2. above shall be positioned lower than 250 mm (F in the figure) nor higher than indicated in paragraph 6.2.4.2. of this Regulation (G in the figure) above the ground;
6.22.4.1.4.              Additionally, in width:
For each mode of the passing-beam lighting:
The outer edge of the apparent surface of at least one lighting unit on each side of the vehicle shall not be more than 400 mm from the extreme outer edge of the vehicle (A in the figure); and,
         The inner edges of the apparent surfaces in the direction of the reference axes shall be not less than 600 mm apart. This does not apply, however, for M1 and N1 category vehicles; for all other categories of motor vehicles this distance may be reduced to 400 mm where the overall width of the vehicle is less than 1,300 mm.

Apparent surfaces of lighting units 1 through 11 of an AFS example

6.22.4.2.