Document ID: chunk:federal_register_of_legislation:F2023C00142:reg:21:p8
Version: federal_register_of_legislation:F2023C00142
Segment Type: reg
Provision Reference: reg 21 (pt 8/15)
Character Range: 53536–56588

or passing beam) is to be approved, the corresponding light source is lit for the prescribed time 1/
              (b) In the case of a reciprocally incorporated passing beam lamp and driving beam lamp or in the case of a reciprocally incorporated front fog lamp and driving beam headlamp:
              If the applicant declares that the headlamp is to be used with a single light source lit [2/] at a time, the test shall be carried out in accordance with this condition, activating [1/] each specified function successively for half the time specified in paragraph 1.1.,
              In all other cases, 1/2/ the headlamp shall be subjected to the following cycle until the time specified is reached:
              15 minutes, passing beam lit
              5 minutes, all functions lit;
              (c) In the case of grouped lighting functions, all the individual functions shall be lit simultaneously for the time specified for individual lighting functions (a), also taking into account the use of reciprocally incorporated lighting functions (b), according to the manufacturer's specifications.
         1.1.1.2. Test voltage
         The test voltage for the ballast is 13.5 +/- 0.1 volts for 12V network system, or otherwise specified in the application for approval.  If there are reciprocally incorporated filament lamps, the voltage producing the reference flux shall be used.
         1.1.2. Test results
         1.1.2.1. Visual inspection:
         Once the headlamp has been stabilised to the ambient temperature, the headlamp lens and the external lens, if any, shall be cleaned with a clean, damp cotton cloth.  It shall then be inspected visually; no distortion, deformation, cracking or change in colour of either the headlamp lens or the external lens, if any, shall be noticeable.
         1.1.2.2. Photometric test:
         To comply with the requirements of this Regulation, the photometric values shall be verified in the following points:
         Passing beam:
              50 R - B 50 L - HV for headlamps designed for right-hand traffic
              50 L - B 50 R - HV for headlamps designed for left-hand traffic.
         Driving beam:
              Point of Emax.
         Another aiming may be carried out to allow for any 'deformation of the headlamp base due to heat (the change of the position of the cut-off line is covered in paragraph 2. of this annex).
         A 10 % discrepancy between the photometric characteristics and the values measured prior to the test is permissible including the tolerances of the photometric procedure.
         1.2. Dirty headlamp
         After being tested as specified in subparagraph 1.1. above, the headlamp shall be operated for one hour as described in subparagraph 1.1.1., after being prepared as prescribed in subparagraph 1.2.1., and checked as prescribed in subparagraph 1.1.2.
         1.2.1. Preparation of the headlamp
         1.2.1.1. Test mixture
         1.2.1.1.1. For headlamp with the outside lens in glass:
         The mixture of water and a polluting