Document ID: chunk:federal_register_of_legislation:F2023C00154:reg:1:p5
Version: federal_register_of_legislation:F2023C00154
Segment Type: reg
Provision Reference: reg 1 (pt 5/15)
Character Range: 109561–112454

front fog lamps.
     2.5. Criteria governing acceptability
     The manufacturer is responsible for carrying out a statistical study of the test results and for defining, in agreement with the competent authority, criteria governing the acceptability of his products in order to meet the specifications laid down for verification of conformity of products in paragraph 11.1. of this Regulation.
     The criteria governing the acceptability shall be such that, with a confidence level of 95 per cent, the minimum probability of passing a spot check in accordance with Annex 8 (first sampling) would be 0.95.
Annex 8

Minimum requirements for sampling by an inspector
     1. General
     The conformity requirements shall be considered to be 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 front fog lamps shall not be contested if the photometric performances according to the requirements in Annex 2 to this Regulation depending on the prevailing class of front fog lamps are satisfied.
     If the results of the tests described above do not meet the requirements, tests on the front fog lamp shall be repeated using light sources as specified in paragraphs 6.3. or 6.4. of this Regulation, as appropriate.
     If the results of the tests described above do not meet the requirements, the alignment of the front fog lamp may be changed, provided that the axis of the beam is not displaced laterally by more than 0.5° to the right or left and not by more than 0.2° up or down. In the re-aimed position all photometric requirements shall be met.
     If the specified luminous intensity requirements are not met, a re-aim of the cut-off position within ±0.5° vertical and/or ±2° horizontal is allowed. In the re-aimed position all photometric requirements shall be met.
     If vertical adjustment cannot be performed repeatedly to the required position within the allowed tolerances, the instrumental method as specified in Annex 9 to this Regulation shall be applied and the quality of cut-off be tested on one sample.
     1.2.1. Front fog lamps with obvious defects are disregarded.
     1.3. The chromaticity coordinates shall comply with paragraph 7. of this Regulation. The photometric performance of a front fog lamp emitting an enlarged selective yellow light when equipped with a colourless light source shall be the values contained in this Regulation multiplied by 0.84.
     2. First sampling
     In the first sampling four front fog lamps shall be selected at random. The first sample of two is marked A, the second sample of two is marked B.
     2.1. Conformity is not contested
     2.1.1. Following the sampling procedure shown in Figure 1 of this annex the conformity