Failure provisions Sample Clauses
Failure provisions. For direction-indicator lamps of categories 1, 1a, 1b, 2a and 2b a signal for activation of the tell-tale prescribed in paragraph 6.5.8. of UN Regulation No. 48 or paragraph 6.3.8. of UN Regulation No. 53 shall be produced if (notwithstanding the provisions stated in paragraph 4.6.):
(a) Any one light source has failed; or
(b) In the case of a lamp designed for only two light sources, the intensity in the axis of reference is less than 50 per cent of the minimum intensity; or
(c) As a consequence of a failure of one or more light sources, the intensity in one of the following directions as indicated in paragraph 2.1. of Annex 3, is less than the minimum intensity required:
(i) H=0°, V=0°
(ii) H=20° to the outside of the vehicle, V= +5°
(iii) H=10° to the inside of the vehicle, V= 0°.
Failure provisions. 4.6.1. Failure of a single lamp containing more than one light source
4.6.1.1. In a single lamp containing more than one light source, a group of light sources, wired so that the failure of any one of them causes all of them to stop emitting light, shall be considered to be one light source.
4.6.1.2. In case of failure of any one light source in a single lamp containing more than one light source, at least one of the following provisions shall apply:
(a) The light intensity complies with the minimum intensity required in the pertinent table of standard light distribution in space as shown in Annex 3 and when all light sources are illuminated the maximum intensities shall not be exceeded; or
(b) A signal for activation of a tell-tale indicating failure, as indicated in paragraphs 6.4.8., 6.7.8., 6.9.8, 6.10.8., 6.11.8., 6.12.8., 6.13.8. and
Failure provisions. 4.6.1. Failure of a single lamp containing more than one light source
4.6.1.1. In a single lamp containing more than one light source, a group of light sources, wired so that the failure of any one of them causes all of them to stop emitting light, shall be considered to be one light source.
4.6.1.2. In case of failure of any one light source in a single lamp containing more than one light source, at least one of the following provisions shall apply:
(a) The light intensity complies with the minimum intensity required in the table of standard light distribution in space as shown in Annex 3, or
(b) A signal for activation of a tell-tale indicating failure, as indicated in paragraphs 6.7.8., 6.9.8, 6.10.8. and 6.13.8. of Regulation No. 48, is produced, provided that the luminous intensity in the axis of reference is at least 50 per cent of the minimum intensity required. In this case a note in the communication form states that the lamp is only for use on a vehicle fitted with a tell-tale indicating failure These requirements do not apply to Daytime Running Lamps that shall comply with the requirements of paragraph 5.4.5.
4.6.2. In case of failure of the variable intensity control of:
(a) A rear position lamp category R2 emitting more than the maximum value of category R or R1;
(b) A rear end-outline marker lamp category RM2 emitting more than the maximum value of category RM1;
(c) A stop lamp category S2 emitting more than the maximum value of category S1;
(d) A stop lamp category S4 emitting more than the maximum value of category S3;
(e) A direction indicator of category 2b emitting more than the maximum value of category 2a, Requirements of steady luminous intensity of the respective category shall be fulfilled automatically.