Document ID: chunk:federal_register_of_legislation:F2023C00154:front:0:p29
Version: federal_register_of_legislation:F2023C00154
Segment Type: other
Provision Reference: 
Character Range: 76245–78894

as prescribed in paragraph 1.1.2. below.
1.1.1. Test procedure
 The front fog lamp shall be operated as follows:
1.1.1.1. In the case where only one lighting function (front fog lamp) is to be approved, the corresponding light source is lit for the prescribed time;[13]
1.1.1.2. In the case of more than one lighting function (e.g. a headlamp with one or more driving-beams and/or a front fog lamp): the headlamp shall be subjected to the following cycle until the prescribed time is reached:
(a) 15 minutes, front fog lamp lit;
(b) 5 minutes, all filaments lit.
If the applicant declares that only one lighting function is to be used at a time (e.g. only the passing-beam lit or only the driving-beam(s) lit or only the front fog lamp lit1), the test shall be carried out in accordance with this condition, successively activating the front fog lamp half of the time and one of the other lighting functions for half the time specified in paragraph 1.1. above.
1.1.1.3. In the case of front fog lamp with a passing-beam and one or more lighting functions (one of them is a front fog lamp):
(a) The front fog lamp shall be subjected to the following cycle until the time specified is reached:
         (i) 15 minutes, passing-beam light source(s) lit;

         (ii) 5 minutes, all light source(s) lit.

              (b) If the applicant declares that the front fog lamp is to be used with only the passing-beam lit or only the front fog lamp[14] lit at a time, the test shall be carried out in accordance with this condition, successively activating[15] the passing-beam half of the time and the front fog lamp for half of the time specified in paragraph 1.1. above. The driving-beam(s) is (are) subjected to a cycle of 15 minutes off and 5 minutes lit for half of the time and during the operation of the passing-beam;

              (c) If the applicant declares that the front fog lamp can be used with only the passing-beam or only the driving-beam(s)2 lit or only the front fog lamp2 lit at a time, the test shall be carried out in accordance with this condition, successively activating2 the passing-beam one third of the time, the driving-beam(s) one third of the time and the front fog lamp for one third of the time specified in paragraph 1.1.

1.1.2.   Test voltage

         The voltage shall be applied to the terminals of the test sample as follows:

              (a) In case of replaceable filament light source(s) operated directly under vehicle voltage system conditions: The test shall be performed at 6.3 V, 13.2 V or 28.0 V as applicable except if the applicant specifies that the test sample may be used at a different voltage.