Document ID: chunk:federal_register_of_legislation:F2023C00155:body:0:p7
Version: federal_register_of_legislation:F2023C00155
Segment Type: other
Provision Reference: 
Character Range: 17702–20578

position lamp

       min. (cd) 4

       max. (cd) 60

       7.3. Stop lamp

       min. (cd) 40

       max. (cd) 100

       7.4. Direction indicators

       7.4.1. of the category 11 (see Annex 1)

       min. (cd) 90

       max. (cd) 700 3/

       7.4.2. of the category 12 (see Annex 1)

       min. (cd) 50

       max. (cd) 200

       7.4.3. of the category 31 (see Annex 1) to the front

       min. (cd) 90

       max. (cd) 700 [3/] to the rear

       min. (cd) 50

       max. (cd) 200

       7.5. Outside of the reference axis and within the angle fields defined in the diagrams in Annex 1 to this Regulation, the intensity of the light emitted shall, in each direction corresponding to the points in the light distribution table reproduced in Annex 4 to this Regulation, be not less than the product of the minima specified in paragraph 7.1. to 7.4. above and of the percentage specified in the said table for the direction in question.

       7.6. As an exception to paragraph 7.1. above, a luminous intensity of 60 cd maximum shall be permitted for rear position lamps reciprocally incorporated with stop lamps, below a plane forming an angle of 5 degrees with and downward from a horizontal plane.

       7.7. Moreover,

       7.7.1. throughout the fields defined in Annex 1, the intensity of the light emitted shall be not less than 0.05 cd for position lamps and not less than 0.3 cd for stop lamps and direction indicators;

       7.7.2. if a position lamp is grouped or reciprocally incorporated with a stop lamp, the ratio between the luminous intensities actually measured of the two lamps when turned on simultaneously and the intensity of the rear position lamp when turned on alone shall be at least 5:1 to the eleven measuring points defined in Annex 4 and situated in the field delimited by straight vertical lines passing through 0 degrees  V/+/- 10 degrees H and  the straight horizontal lines passing through +/- 5 degrees  V/0 degrees  H of the light distribution table;

       7.7.3. the provisions of paragraph 2.2. of Annex 4 to this Regulation on local variations of intensity shall be observed.

       7.8. The luminous intensities shall be measured with the filament lamp continuously alight. In the case of lamps working intermittently, precaution shall be taken to avoid overheating of the device.

       7.9. Annex 4, to which reference is made in paragraph 7.5. above, gives particulars of the methods of measurement to be used.

       7.10. The rear-registration-plate illuminating device shall comply with the specifications indicated in Annex 6 to this Regulation.

       7.11. The photometric performance lamps equipped with several light sources shall be checked in accordance with the provisions of Annex 4.

       8. TEST PROCEDURE

       8.1. All measurements shall be carried out with an uncoloured standard