Document ID: chunk:federal_register_of_legislation:F2023C00228:front:0:p15
Version: federal_register_of_legislation:F2023C00228
Segment Type: other
Provision Reference: 
Character Range: 41415–44220

taken with the same headlamp adjustment as for measurements under 6.3 above, or, in the case of a headlamp providing a driving beam only, in accordance with the final Paragraph of 6.2.  In the case where more than one light source is used to provide the main beam, the combined functions shall be used to determine the maximum value of the illumination (Emax).

       The illumination produced on the screen by the driving beam shall meet the following requirements:

       The point of intersection HV of the lines hh and vv shall be situated within the isolux 90% of maximum illumination.  This maximum value shall not less than 32 lux. Starting from point of intersection HV, horizontally to the right and left, illumination shall be not less than 16 lux up to a distance of 1.125 m and not less than 4 lux up to a distance  of  2.25  m. (Where the flux of the standard filament lamp used for measurements is other than 700 lumens, the measurements as taken must be corrected proportionally to the ratio of the fluxes.)

       6.7. The screen illumination values mentioned under 6.3 and 6.5 above shall be measured by means of a photo-electric cell, the useful area of which shall be contained within a square of 65 mm side.

       7. GAUGING OF DISCOMFORT

       The discomfort caused by the passing beam of headlamps shall be gauged.[11/]

       8.  STANDARD HEADLAMP

       A headlamp shall be deemed to be a standard headlamp if it

       8.1. Satisfies the above-mentioned requirements for approval;

       8.2. Has an effective diameter of not less than 160 mm;

       8.3. Provides with a standard filament lamp, at the various points and in the various areas referred to in Paragraph 6.3 above, illumination equal to:

       8.3.1. not more than 90% of the maximum limits, and

       8.3.2. not less than 120% of the minimum limits prescribed in the Table in Paragraph 6.3.

       9. CONFORMITY OF PRODUCTION

       9.1 Headlamps approved under this Regulation shall be so manufactured as to conform to the type approved by meeting the requirements set forth in paragraphs 6.

       9.2. In order to verify that the requirements of paragraph 9.1. are met, suitable controls of the production shall be carried out.

       9.3. The holder of the approval shall in particular:

       9.3.1. ensure the existence of procedures for the effective control of the quality of products;

       9.3.2. have access to the control equipment necessary for checking the conformity to each approved type;

       9.3.3. ensure that data of test results are recorded and that related documents shall remain available for a period to be determined in accordance with the administrative service;

       9.3.4. analyze the results of each type of test in order to verify and ensure the stability