Document ID: chunk:federal_register_of_legislation:F2023C00159:body:0:p5
Version: federal_register_of_legislation:F2023C00159
Segment Type: other
Provision Reference: 
Character Range: 12242–15020

may be clearly identified (see three possible examples in annex 2).

       4.5.3. The size of the components of a single approval mark shall not be less than the minimum size required for the smallest of the individual marks by a Regulation under which approval has been granted.

       4.5.4. An approval number shall be assigned to each type approved.  The same Contracting Party may not assign the same number to another type of grouped, combined or reciprocally incorporated lamps covered by this Regulation.

       4.6. Annex 2 gives examples of arrangements of approval marks for a single lamp (figure 1) and for grouped, combined or reciprocally incorporated lamps (figure 2) with all the additional symbols referred to above.

       5. GENERAL SPECIFICATIONS

       5.1. Each sample shall conform to the specifications set forth in the paragraphs below.

       5.2. Rear fog lamps shall be so designed and constructed that in normal use, despite the vibration to which they may then be subjected, they continue to function satisfactorily and retain the characteristics prescribed by this Regulation.

       6. INTENSITY OF LIGHT EMITTED

       6.1. The intensity of the light emitted by each of the two samples shall be not less than the minima and not greater than the maxima specified below and shall be measured in relation to the axis of reference in the directions shown below (expressed in degrees of angle with the axis of reference).

       6.2. The intensity along the H and V axes, between 10 degrees to the left and 10 degrees to the right and between 5 degrees up and 5 degrees down, shall not be less than 150 cd.

       6.3. The intensity of the light emitted in all directions in which the light(s) can be observed shall not exceed 300 cd per light.

       6.4. In the case of a single light containing more than one light source, the lamp shall comply with the minimum intensity required when any one light source has failed and when all light sources are illuminated the maximum intensities shall not be exceeded.

       6.5. The apparent surface in the direction of the reference axis shall not exceed 140 cm2.

       6.6. Annex 3 gives particulars of the measurement method to be used in case of doubt.

       7. TEST PROCEDURE

       All measurements shall be carried out with uncoloured standard lamps of the types prescribed for the device, adjusted to produce the normal luminous flux prescribed for those types of lamps.

       7.1. 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