Document ID: chunk:federal_register_of_legislation:F2023C00143:reg:25:p2
Version: federal_register_of_legislation:F2023C00143
Segment Type: reg
Provision Reference: reg 25 (pt 2/14)
Character Range: 25348–28228

for both the day and the night conditions of use. The time measured for the night condition of use shall not exceed that measured for the day condition of use.

       6.5. Annex 4, to which reference is made in paragraph 6.2.1 above, gives particulars of the methods of measurement to be used.

       7. TEST PROCEDURE

       7.1. All measurements shall be made with a white standard filament lamp of the category prescribed for the device, the supply voltage being so regulated as to produce the normal luminous flux prescribed for that category of lamp.

       7.1.1. All measurements on lamps equipped with non-replaceable light sources (filament lamps and other) shall be made at 6.75 V, 13.5 V or 28.0 V respectively.

       In the case of light sources supplied by a special power supply, the above test voltages shall be applied to the input terminals of that power supply.  The test laboratory may require from the manufacturer the special power supply needed to supply the light sources.

       7.2. However, in the case of a stop-lamp for which an additional system is used to obtain the night-time intensity, the voltage applied to the system for measuring the night-time intensity shall be that which was applied to the filament lamp for measuring the day-time intensity. [2/]

       7.3. Where a rear position (side) lamp is reciprocally incorporated with a dual-intensity stop- lamp and is designed to operate permanently with an additional system to regulate the intensity of the light emitted, measurement of the light emitted shall be performed with the same voltage applied to the system as would, if applied to the filament lamp, enable the lamp to produce the prescribed normal luminous flux.

       7.4. The vertical and horizontal outlines of the illuminating surface of a light-signalling device (paragraph 1.6.2) shall be determined and measured in relation to the centre of reference (paragraph 1.6.5).

       8. COLOUR OF LIGHT EMITTED

       The colour of the light emitted shall be within the limits of the co-ordinates prescribed for the colour in question in annex 5 to this Regulation.

       9. CONFORMITY OF PRODUCTION

       The Conformity of Production procedures shall comply with those set out in the Agreement, Appendix 2 (E/ECE/324-E/ECE/TRANS/505/Rev. 2), with the following requirements:

       9.1. Lamps approved under this Regulation shall be so manufactured as to conform to the type approved by meeting the requirements set forth in paragraphs 6 and 8 above.

       9.2. The minimum requirements for Conformity of Production control procedures set forth in annex 6 to this Regulation shall be complied with.

       9.3. The minimum requirements for sampling by an inspector set forth in annex 7 to this Regulation shall be complied with.

       9.4. The authority which has granted type approval may at any time verify