Document ID: chunk:federal_register_of_legislation:F2023C00228:front:0:p51
Version: federal_register_of_legislation:F2023C00228
Segment Type: other
Provision Reference: 
Character Range: 137556–140528

shall cover the photometric characteristics and the verification of the change in vertical position of the cut-off line under the influence of heat.

       2.2.  Method 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 tests of conformity carried out by the manufacturer, equivalent methods may be used with the consent of the competent authority responsible for aproval test.  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 the paragraphs 2.2.1. and 2.2.2. requires regular calibration of test apparatus and its correlation with measurements made by a competent authority.

       2.2.4. In all cases the reference methods shall be those of this Regulation, particularly for the purpose of administrative verification and sampling.

       2.3. Nature of sampling

       Samples of the headlamps shall be selected at random from the production of a uniform batch. A uniform batch means a set of headlamps of the same type, defined according to the production methods of the manufacture.

       The assessment shall be general cover series production from individual factories. However, a manufacture may group together records concerning the same type from several factories, provided theses operate under the same quality system and quality management.

       2.4. Measured and recorded photometric characteristics

       The sampled headlamp shall be subjected to photometric measurements at the points provided for in the Regulation, the reading being limited to points Emax, HV[1/], HL, HR[2/]

       in the case of the driving beam, and to points B 50 L (or R), HV, 75 R (or L) and 25 L (or R) on the case of the passing beam (see figure in annex 4).

       2.5. Criteria governing acceptability

       The manufacturer is responsible for caring 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 12.1 of this Regulation.

       The criteria governing the acceptability shall be such that, with a confidence level of 95 %, the minimum probability of passing a spot check in accordance with annex 7 (first sampling) would be 0.95.

       Annex 4

       EXAMPLES OF ARRANGEMENTS OF APPROVAL MARKS

       1.

       a = 12 mm min.
       Figure 1

        The SB headlamp bearing the approval marking shown above is a headlamp approved    in the Netherlands (E4), meeting the requirements of this Regulation as amended by the 02 series of amendments in respect of both the driving beam and the passing beam (SCR), and which is designed for right-hand traffic only.

        NOTE: The approval number and the additional symbol(s) shall be