Document ID: chunk:federal_register_of_legislation:F2023C00143:reg:25:p1
Version: federal_register_of_legislation:F2023C00143
Segment Type: reg
Provision Reference: reg 25 (pt 1/14)
Character Range: 22717–25569

25                      80 2/                                        55 2/                                                    110 2/

       6.2. Outside the reference axis and within the angular fields defined in the diagrams in annex 1 to this Regulation, the intensity of the light emitted by each of the two devices supplied must:

       6.2.1. 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 minimum specified in paragraph 6.1 above by the percentage specified in the said table for the direction in question;

       6.2.2. In no direction within the space from which the light-signalling device is visible, exceed the maximum specified in paragraph 6.1 above;

       6.2.3. However, a luminous intensity of 60 cd shall be permitted for rear position (side) lamps reciprocally incorporated with stop-lamps (see paragraph 6.1.3 above) below a plane forming an angle of 5 degrees with and downward from the horizontal plane;

       6.2.4. Moreover,

       6.2.4.1. Throughout the fields defined in the diagrams in annex 1, the intensity of the light emitted must be not less than 0.05 cd for front and rear position (side) lamps and end- outline marker lamps, not less than 0.3 cd for stop-lamps with one level of intensity, and for stop-lamps with two levels of intensity 0.3 cd by day and 0.07 cd by night;

       6.2.4.2. If a rear position (side) lamp is reciprocally incorporated with a stop-lamp, the ratio between the luminous intensities actually measured of the two lamps when turned on simultaneously at the intensity of the rear position (side) lamp when turned on alone should be at least 5 : 1 in the field delimited by the straight horizontal lines passing through +/- 5 degrees V and the straight vertical lines passing through +/- 10 degrees H of  the  light  distribution  table. If the stop-lamp has two levels of intensity, this requirement must be satisfied when the night condition is switched on;

       6.2.4.3. The provisions of paragraph 2.2 of annex 4 to this Regulation on local variations of intensity must be observed.

       6.3. The intensities shall be measured with the filament lamp(s) continuously alight and, in the case of devices emitting selective-yellow or red light, in coloured light.

       6.4. In the case of a stop-lamp providing two levels of intensity the time that elapses between electrical supply being switched on and the light output measured on the reference axis to reach 90% of the value measured in accordance with paragraph 6.3 above shall be measured 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