Document ID: chunk:federal_register_of_legislation:F2023C00228:front:0:p30
Version: federal_register_of_legislation:F2023C00228
Segment Type: other
Provision Reference: 
Character Range: 80409–83376

in Appendix 4 to this Annex.  This adhesive tape, which shall be at least 25 mm wide, shall be pressed for at least five minutes to the surface prepared as prescribed in Paragraph 2.5.1.

       Then the end of the adhesive tape shall be loaded in such a way that the force of adhesion to the surface considered is balanced by a force perpendicular to that surface.  At this stage, the tape shall be torn off at a constant speed of 1.5 m/s +/- 0.2 m/s.

       2.5.3. Results

       There shall be no appreciable impairment of the gridded area.  Impairments at the intersections between squares or at the edges of the cuts shall be permitted, provided that the impaired area does not exceed 15% of the gridded surface.

       2.6. Tests of the complete lamp incorporating a lens of plastic material

       2.6.1. Resistance to mechanical deterioration of the lens surface

       2.6.1.1. Tests

       The lens of lamp sample No. 1 shall be subjected to the test described in Paragraph 2.4.1 above.

       2.6.1.2. Results

       After the test, the results of photometric measurements carried out on the lamp in accordance with this Regulation shall not exceed by more than 30% the maximum values prescribed at points B 50 L and HV and not be more than 10% below the minimum values prescribed at point 75 R (in the case of headlamps intended for left- hand traffic, the points to be considered are B 50 R, HV and 75 L).

       2.6.2. Test of adherence of coatings, if any

       The lens of lamp sample No. 2 shall be subjected to the test described in Paragraph 2.5 above.

       3. VERIFICATION OF THE CONFORMITY OF PRODUCTION

       3.1. With regard to the materials used for the manufacture of lenses, the lamps of a series shall be recognized as complying with this Regulation if:

       3.1.1. After the test for resistance to chemical agents and the test for resistance to detergents and  hydrocarbons,  the  outer  face  of  the  samples  exhibits  no  cracks,  chipping  or deformation visible to the naked eye (see Paragraphs 2.2.2, 2.3.1 and 2.3.2);

       3.1.2. After the test described in Paragraph 2.6.1.1, the photometric values at the points of measurement  considered in  Paragraph  2.6.1.2 are  within  the limits prescribed  for conformity of production by this Regulation.

       3.2. If the test results fail to satisfy the requirements, the tests shall be repeated on another sample of headlamps selected at random.

       Annex 7 Appendix 1

       CHORONOLOGICAL ORDER OF APPROVAL TESTS

       A. Tests on plastic materials (lenses or samples of material supplied pursuant to paragraph 2.2.4. of this Regulation).

       Samples                      Lenses or samples  Lenses
                                    of material
Tests                               1                  2       3   4   5   6   7   8   9   10   11   12   13
1.1    Limited photometry                                                                  X