Document ID: chunk:federal_register_of_legislation:F2023C00228:front:0:p120
Version: federal_register_of_legislation:F2023C00228
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Character Range: 323788–326507

of the absolute values Delta rI measured on the first sample and Delta rII measured on the second sample is not more than 1.0 mrad.

Annex 5

MINIMUM REQUIREMENTS FOR CONFORMITY OF PRODUCTION CONTROL PROCEDURES

       1. GENERAL

       1.1. The conformity requirements shall be considered satisfied from a mechanical and geometric  standpoint,  if  the  differences  do  not  exceed  inevitable  manufacturing deviations within the requirements of this Regulation.

       1.2. With respect to photometric performances, the conformity of mass-produced headlamps shall not be contested if, when testing photometric performances of any headlamp chosen at random and equipped with a standard filament lamp:

       1.2.1. no measured value deviates unfavourably by more than 20 % from the values prescribed in this Regulation. For values B 50 L (or R) and zone III, the maximum unfavourable deviation may be respectively:

       B 50 L (or R): 0.2 lambda x equivalent 20 %

          0.3 lambda x equivalent 30 %

       Zone III:  0.3 lambda x equivalent 20 %

          0.45 lambda x equivalent 30 %

       1.2.2. or if

       1.2.2.1. for the passing beam, the values prescribed in this Regulation are met at HV (with a tolerance of + 0.2 lambda x) and related to that aiming at least one point of each area delimited on the measuring screen (at 25 m) by a circle 15 cm in radius around points B 50 L (or R)[1/] (with a tolerance of + 0.1 l x), 75 R (or L), 50 V, 25 R, 25 L, and in the entire area of zone IV which is not more than 22.5 cm above line 25 R and 25 L;

       1.2.2.2. and if, for the driving beam, HV being situated within the isolux 0.75 Emax, a tolerance of + 20 % for maximum values and -20 % for minimum values is observed for the photometric  values  at  any  measuring  point  specified  in  paragraph  6.3.2.  of  this Regulation.

       1.2.3. If the results of the tests described above do not meet the requirements, the alignment of the headlamp may be changed, provided that the axis of the beam is not displaced laterally by more than 1degrees to the right or left. [13/]

       1.2.4. If the results of the tests described above do not meet the requirements, tests on the headlamp shall be repeated using another standard filament lamp.

       1.3. With respect to the verification of the change in vertical position of the cut-off line under the influence of heat, the following procedure shall be applied:

       One of the sampled headlamps shall be tested according to the procedure described in paragraph 2.1. of Annex 4 after being subjected three consecutive times to the cycle described in paragraph 2.2.2. of Annex 4.

       The headlamp shall be considered as acceptable