Document ID: chunk:federal_register_of_legislation:F2023C00144:reg:6:p1
Version: federal_register_of_legislation:F2023C00144
Segment Type: reg
Provision Reference: reg 6 (pt 1/17)
Character Range: 19683–22507

6                                50                                                 200                                                           140     280

2/ The installation of front direction indicators of the various categories in power-driven vehicles and their trailers is provided for in the Regulations concerning the installation of lighting and light-signalling devices (Regulations Nos. 48 and 53).

3/ In the case of a single lamp containing more than one light source: the lamp shall comply with the minimum intensity required when any one light source has failed, however for front or rear direction indicator lamps 50% of the minimum intensity in the axis of reference of the lamp shall be considered sufficient provided that a note in the communication form states that the lamp is only for use on a vehicle fitted with an operating tell-tale which indicates when any one or more light source(s) has (have) failed, and when all light sources are illuminated the maximum intensity specified for a single lamp may be exceeded provided that the single lamp is not marked ''D'' and the maximum intensity specified   for an assembly of two lamps (last column of the table) is not exceeded.

       6.2. Outside the reference axis, within the angular fields specified in the arrangement 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 relevant table of luminous-intensity distribution reproduced in Annex 4 to this Regulation, be not less than the minimum specified in paragraph 6.1. above multiplied by the percentage specified in the said table for the direction in question;

       6.2.1.1. In divergence from paragraphs 6.2. and 6.2.1., for categories 4 and 5 direction indicators, to the rear, a minimum value of 0.6 cd is required throughout the fields specified in Annex 1;

       6.2.2. In no direction within the area from which the indicator lamp is visible, exceed the maximum specified in paragraph 6.1. above;

       6.2.3. Moreover,

       6.2.3.1. Throughout the fields defined in the diagrams in Annex 1, the intensity of the light emitted must be not less than 0.7 cd for devices of category 1 b, not less than 0.3 cd for devices of categories 1, 1a, 2a, 3, 4 towards the front and for those of category 2b by day; it shall not be less than 0.07 cd for devices of category 2b by night;

       6.2.3.2. For devices of categories 1 and 2b by night and, to the front, for devices of categories 3 and 4, the intensity of the light emitted outside the zone defined by the measuring points +/- 10 degrees H and +/- 10 degrees V (10 degrees -field) must not exceed the following values:

Direction indicator of category  Maximum values in cd outside the 1.0