Document ID: chunk:federal_register_of_legislation:F2023C00919:body:0:p102
Version: federal_register_of_legislation:F2023C00919
Segment Type: other
Provision Reference: 
Character Range: 299249–302432

which is, installed edge on, or with only the edge visible, should follow the operating principles of control of types (a) or (c).
1.1.1.                              This control shall carry symbols indicating clearly the movements corresponding to the downward and upward inclination of the dipped-beam.
1.2.                                    The "0" position corresponds to the initial inclination according to paragraph 6.2.6.1.1. of this Regulation.
1.3.                                    The "0" position which, according to paragraph 6.2.6.2.2. of this Regulation has to be a "stop position", need not necessarily be at the end of the scale.
1.4.                                    The marks used on control shall be explained in the owner's handbook.
1.5.                                    Only the following symbols may be used to identify the controls:

Symbols employing five lines instead of four may also be used
Example 1

    Example 2

    Example 3

Annex 9

Control of conformity of production

          1. Tests
              1.                                     Position of lamps
The position of lamps, as defined in paragraph 2.7. of this Regulation, in width, in height and in length shall be checked in accordance with the general requirements set out in paragraphs 2.8. to 2.10., 2.14. and 5.4. of this Regulation.
The values measured for the distances shall be such that the individual specifications applicable to each lamp are fulfilled.
1.2.                                    Visibility of lamps
1.2.1.                              The angles of geometric visibility shall be checked in accordance with paragraph 2.13. of this Regulation.
The values measured for the angles shall be such that the individual specifications applicable to each lamp are fulfilled except that the limits of the angles may have an allowance corresponding to the ±3º variation permitted in paragraph 5.3. for the mounting of the light signalling devices.
1.2.2.                              The visibility of red light towards the front and of white light towards the rear shall be checked in accordance with paragraph 5.10. of this Regulation.
1.3.                                    Alignment of dipped-beam headlamps and class "F3" front fog lamps towards the front
1.3.1.                              Initial downward inclination
The initial downward inclination of the cut off of the dipped-beam and the class "F3" front fog lamps shall be set to the plated figure as required and shown in Annex 7.
Alternatively the manufacturer shall set the initial aim to a figure that is different from the plated figure where it can be shown to be representative of the type approved when tested in accordance with the procedures contained in Annex 6 and in particular paragraph 4.1.
1.3.2.                              Variation of inclination with load
The variation of the dipped-beam downward inclination as a function of the loading conditions specified within this section shall remain within the range:
0.2 per cent to 2.8 per cent  for headlamp mounting height h < 0.8;
0.2 per cent to 2.8 per cent  for headlamp mounting height
                              0.8 ≤ h