Document ID: chunk:federal_register_of_legislation:F2023C00228:reg:7:p5
Version: federal_register_of_legislation:F2023C00228
Segment Type: reg
Provision Reference: reg 7 (pt 5/12)
Character Range: 605341–608193

shall be verified 3 minutes (r3) and 60 minutes (r60) respectively after operation.

       The measurement of the variation in the cut-off line position as described above shall be carried out by any method giving acceptable accuracy and reproducible results.

       2.2. Test results

       2.2.1. The result in milliradians (mrad) shall be considered as acceptable for a passing lamp, only when the absolute value rI =  r3 - r60  recorded on the headlamp is not more than 1.0 mrad (rI  1.0 mrad).

       2.2.2. However, if this value is more than 1.0 mrad but not more than 1.5 mrad (1.0 mrad < rI  1.5 mrad) a second headlamp shall be tested as described in paragraph 2.1. after being subjected three consecutive times to the cycle as described below, in order to stabilize the position of mechanical parts of the headlamp on a base representative of the correct installation on the vehicle:

       Operation of the passing beam for one hour, (the voltage shall be adjusted as specified in paragraph 1.1.1.2.),

       Period of rest for one hour.

       The headlamp type shall be considered as acceptable if the mean value of the absolute values rI measured on the first sample and 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 a geometrical standpoint, if the differences do not exceed inevitable manufacturing deviations within the requirements of this Regulation. This condition also applies to colour.

       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. Class A headlamp: no measured value deviates unfavourably by more than 20 per cent from the value prescribed in this Regulation.

       1.2.2. Class B, C and D headlamp:

       1.2.2.1. no measured value deviates unfavourably by more than 20 per cent from the value prescribed in this Regulation.  For values in zone III, for Class B headlamp, Zone 1 for Class C and D headlamp, the maximum unfavourable deviation may be respectively:

       0.3 lux equivalent 20 per cent
       0.45 lux equivalent 30 per cent

       1.2.2.2. and if, for the driving beam, HV being situated within the isolux 0.75 Emax, a tolerance of + 20 per cent for maximum values and - 20 per cent for minimum values is observed for the photometric values at any measuring point specified in paragraphs 6.2.3.2. and 6.3.2.2. of this Regulation.

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