Document ID: chunk:federal_register_of_legislation:F2023C00228:reg:1:p5
Version: federal_register_of_legislation:F2023C00228
Segment Type: reg
Provision Reference: reg 1 (pt 5/15)
Character Range: 636787–639729

headlamps shall not be contested if the deviations of the measured values of the headlamps are:

       3.1.1.1. sample C

       C1: one headlamp  0 per cent
        one headlamp not more than 20 per cent

       C2: both headlamps more than 0 per cent
        but not more than 20 per cent
        go to sample D

       3.1.1.2. sample D

       D1: in the case of C2
        both headlamps  0 per cent

       3.2. The conformity is contested

       3.2.1. Following the sampling procedure shown in Figure 1 of this annex the conformity of mass-produced headlamps shall be contested and the manufacturer requested to make his production meet the requirements (alignment) if the deviations of the measured values of the headlamps are:

       3.2.1.1. sample D

       D2: in the case of C2
        one headlamp more than0 per cent
        but not more than 20 per cent
        one headlamp not more than 20 per cent

       3.3. Approval withdrawn

       Conformity shall be contested and paragraph 11. applied if, following the sampling procedure shown in Figure 1 of this annex, the deviations of the measured values of the headlamps are:

       3.3.1. sample C

       C3: one headlamp not more than 20 per cent
        one headlamp more than 20 per cent
       C4: both headlamps more than 20 per cent

       3.3.2. sample D

       D3: in the case of C2
        one headlamp 0 or more than 0 per cent
        one headlamp more than 20 per cent

Figure 1

Annex 8

OVERVIEW OF OPERATIONAL PERIODS CONCERNING TEST FOR STABILITY OF PHOTOMETRIC PERFORMANCE

Abbreviations: P: passing beam lamp

D: driving beam lamp (D1 + D2 means two driving beams)

F: front fog lamp

: means a cycle of 15 minutes off and 5 minutes lit.

All following grouped headlamps and front fog lamps together with the added class B marking symbols are given as examples and are not exhaustive.

Annex 9

DEFINITION AND SHARPNESS OF THE "CUT-OFF" LINE FOR SYMMETRICAL PASSING-BEAM HEADLAMPS AND AIMING PROCEDURE BY MEANS OF THIS CUT‑OFF LINE
       1. General:

       1.1. The luminous intensity distribution of the symmetrical passing-beam headlamps shall incorporate a "cut-off" line which enables the symmetrical passing-beam headlamp to be adjusted correctly for the photometric measurements and for the aiming on the vehicle.  The characteristics of the "cut-off" line shall comply with the requirements set out in paragraphs 2. to 4. below:

       2. Shape of the cut-off line:

       2.1. For visual adjustment of the symmetrical passing-beam headlamp the cut-off line shall provide: a horizontal line for vertical adjustment of the symmetrical passing-beam headlamp extending to either side of the V-V-line (see Figure 1) as specified in paragraph 6.2.1. of this Regulation.

       3. Adjustment of the symmetrical passing-beam headlamp:

       3.1. Horizontal adjustment:  The beam with the "cut-off" line shall be so positioned that the