Document ID: chunk:federal_register_of_legislation:F2023C00228:front:0:p97
Version: federal_register_of_legislation:F2023C00228
Segment Type: other
Provision Reference: 
Character Range: 261941–264950

R (or L), 50V, 25R, 25L, and in the entire area of zone IV which is not more than 22.5cm above line 25R and 25L;

       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. The reference mark is disregarded.

       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 1 degrees to the right or left. [14/]

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

       1.2.5. Headlamps with apparent defects are disregarded.

       1.2.6. The reference mark is disregarded.

       1.3. The chromaticity coordinates shall be complied with when the headlamp is equipped  with a filament lamp set to Standard A colour temperature.

       The photometric performance of a headlamp emitting selective yellow light when equipped with a colourless filament lamp shall be the values contained in this Regulation multiplied by 0.84.

       2. FIRST SAMPLING

       In the first sampling four headlamps are selected at random. The first sample of two is marked A, the second sample of two is marked B.

       2.1. The conformity is not contested

       2.1.1. Following the sampling procedure shown in Figure 1 of this Annex the conformity of mass-produced headlamps shall not be contested if the deviation of the measured values of the headlamps in the unfavourable directions are:

       2.1.1.1.  sample A

       A1: one headlamp        0%

         one headlamp not more than      20%

       A2: both headlamps more than      0%

         but not more than       20%

       go to sample B

       2.1.1.2. sample B

       B1: both headlamps       0%

       2.1.2. or if the conditions of paragraph 1.2.2. for sample A are fulfilled.

       2.2. The conformity is contested

       2.2.1. 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:

       2.2.1.1.  sample A

       A3: one headlamp not more than      20%

         one headlamp more than      20%

         but not more than       30%

       2.2.1.2.  sample B

       B2: in the case of A2

         one headlamp more than      0%

         but not more than       20%

         one headlamp not more than      20%

       B3: in the case of A2

         one headlamp        0%

         one headlamp more than      20%

         but not more than       30%

       2.2.2. or if the conditions of paragraph 1.2.2. for sample A