Document ID: chunk:federal_register_of_legislation:F2021C00466:body:0:p6
Version: federal_register_of_legislation:F2021C00466
Segment Type: other
Provision Reference: 
Character Range: 15360–18630

designed and constructed that in normal use, despite the vibrations to which they may be subjected, their satisfactory operation continues to be ensured and they retain the characteristics prescribed by this Regulation.
6.3.                                    In the case of light source modules, it shall be checked that:
6.3.1.                              The design of the light source module(s) shall be such as:
             (a) That each light source module can only be fitted in no other position than the designated and correct one and can only be removed with the use of tool(s);
             (b) If there are more than one light source module used in the housing for a device, light source modules having different characteristics cannot be interchanged within the same lamp housing.
6.3.2.                              The light source module(s) shall be tamperproof.
6.3.3.                              A light source module shall be so designed that regardless of the use of tool(s), it shall not be mechanically interchangeable with any replaceable approved light source.
6.4.                                    In the case of replaceable light source(s):
6.4.1.                              Any category or categories of light source(s) approved according to Regulation No. 37 and/or Regulation No. 128 may be used, provided that no restriction on the use is made in Regulation No. 37 and its series of amendments in force at the time of application for type approval or in Regulation No. 128 and its series of amendments in force at the time of application for type approval.
6.4.2.                              The design of the device shall be such that the light source can be fixed in no other position but the correct one.
6.4.3.                              The light source holder shall conform to the characteristics given in IEC Publication 60061. The holder data sheet relevant to the category of light source used, applies.
7.                                          Photometric characteristics
7.1.                                    In the reference axis, the light emitted by each of the two samples shall be of not less than the minimum intensity and of not more than the maximum intensity specified below:
                                     Minimum Maximum
                                   (cd)     (cd)
7.1.1.                              Intensity of forward facing parking lamps  2      60
7.1.2.                              Intensity of rearward facing parking lamps       2       30
7.1.3.                              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 and when all light sources are illuminated the maximum intensities shall not be exceeded.
All light sources which are connected in series are considered to be one light source.
7.2.                                    Outside the reference axis and within the angular fields defined in the diagrams in Annex 3 to this Regulation, the intensity of the light emitted by each of the two samples shall:
7.2.1.                              In each direction corresponding to the points in the luminous intensity distribution table reproduced in Annex