Document ID: chunk:federal_register_of_legislation:F2023C00228:reg:7:p6
Version: federal_register_of_legislation:F2023C00228
Segment Type: reg
Provision Reference: reg 7 (pt 6/12)
Character Range: 607924–610842

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 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 (Class B, C and D headlamps only):

       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 if r does not exceed 1.5 mrad.

       If this value exceeds 1.5 mrad but is not more than 2.0 mrad, a second sample shall be subjected to the test after which the mean of the absolute values recorded on both samples shall not exceed 1.5 mrad.

       1.4. Headlamps with apparent defects are disregarded.

       1.5. If, however, for a series of samples vertical adjustment cannot be performed repeatedly to the required position within the allowed tolerances, the quality of cut-off shall be tested on one of the headlamps from the series of samples, according to the procedure described in Annex 9, paragraphs 2. and 4.

       2. MINIMUM REQUIREMENTS FOR VERIFICATION OF CONFORMITY BY THE MANUFACTURER

       For each type of headlamp the holder of the approval mark shall carry out at least the following tests, at appropriate intervals.  The tests shall be carried out in accordance with the provision of this Regulation.

       If any sampling shows non-conformity with regard to the type of test concerned, further samples shall be taken and tested.  The manufacturer shall take steps to ensure the conformity of the production concerned.

       2.1. Nature of tests

       Tests of conformity in this Regulation shall cover the photometric characteristics and for Class B, C and D headlamps the verification of the change in vertical position of the cut-off line under influence of heat.

       2.2. Methods used in tests

       2.2.1. Tests shall generally be carried out in accordance with the methods set out in this Regulation.

       2.2.2. In any test of conformity carried out by the manufacturer, equivalent methods may be used with the consent of the Competent Authority responsible for approval tests.  The manufacturer is responsible for proving that the applied methods are equivalent to those laid down in this Regulation.

       2.2.3. The application of paragraphs 2.2.1. and 2.2.2. requires regular calibration of test apparatus and its correlation with measurement made by a Competent Authority.

       2.2.4. In all cases the reference methods shall be those of this Regulation, particular for the purpose of administrative