Document ID: chunk:federal_register_of_legislation:F2023C00158:reg:4:p1
Version: federal_register_of_legislation:F2023C00158
Segment Type: reg
Provision Reference: reg 4 (pt 1/2)
Character Range: 54996–57786

4                      2.                   Deposit of samples with administration                                  x  x
*  of the Regulation.

       Annex 13

       RESISTANCE TO IMPACT - CLASS IV A

       1. The retro-reflecting device shall be mounted in a manner similar to the way in which it is mounted on the vehicle, but with the lens faced horizontal and directed upwards.

       2. Drop a 13mm diameter polished solid steel ball, once, vertically onto the central part of the lens from a height of 0.76m. The ball may be guided but not restricted in free fall.

       3. When a retro-reflecting device is tested at room temperature with this method, the lens shall not crack.

       Annex 14

       TEST PROCEDURE - CLASS IV A

       1. The applicant shall submit for approval ten samples which shall be tested in the chronological order indicated in annex 15.

       2. After verification of the specifications in paragraphs 6.1. to 6.5. and the specifications of shape and dimensions (annex 5), the ten samples shall be subjected to the heat resistance test (annex 10) and one hour minimum after this test examined as to their colorimetric characteristics (annex 6) and CIL (annex 7) for an angle of divergence of 20' and an illumination angle V = H = 0 degrees or, if necessary, in the positions defined in annex 7.  The two retro-reflecting devices giving the minimum and maximum values shall then be fully tested as shown in annex 7.  These two samples shall be kept by the laboratories for any further checks which may be found necessary.

       3. Four samples out of the remaining eight samples shall be selected at random and divided into two groups of two in each group.

        First group:

        The two samples shall be subjected successively to the water-penetration resistance test (annex 8, paragraph 1) and then, if this test is satisfactory, to the tests for resistance to fuels and lubricating oils (annex 8, paragraphs 3 and 4).

        Second group:

        The two samples shall, if relevant, be subjected to the corrosion test (annex 8, paragraph 2), and then to the abrasive-strength test of the rear face of the retro-reflecting device (annex 8, paragraph 5).  These two samples shall also be subjected to the impact test (annex 13).

       4. After undergoing the tests referred to in the above paragraph, the retro-reflecting devices in each group must have:

       4.1. A colour which satisfies the conditions laid down in annex 6.  This shall be verified by a qualitative method and, in case of doubt, confirmed by a quantitative method;

       4.2. A CIL which satisfies the conditions laid down in annex 7.  Verification shall be performed only for an angle of divergence of 20' and an illumination angle of V = H = 0 degrees or,