Document ID: chunk:federal_register_of_legislation:F2023C00228:reg:1:p13
Version: federal_register_of_legislation:F2023C00228
Segment Type: reg
Provision Reference: reg 1 (pt 13/35)
Character Range: 479300–482072

assembly the requirements of paragraph 6.3. of this Regulation apply.

        5.3. The headlamp shall be equipped with filament lamp(s) approved according to Regulation No. 37.  Any Regulation No. 37 filament lamp may be used, provided that no restriction on the application is made in the table of contents of Regulation No. 37. [7]/

        5.4. The components by which a filament lamp is fixed to the reflector shall be so made that, even in darkness, the filament lamp can be fixed in no position but the correct one. [8]/

        5.5. The filament lamp holder shall conform to the characteristics given in IEC Publication 61-2, third edition, 1969.  The holder data sheet relevant to the category of filament lamp used, applies.

        5.6. Headlamps designed to satisfy the requirements both of right-hand and of left-hand traffic may be adapted for traffic on a given side of the road either by an appropriate initial setting when fitted on the vehicle or by selective setting by the user. Such initial or selective setting may consist, for example, of fixing either the optical unit at a given angle on the vehicle or the filament lamp at a given angle in relation to the optical unit. In all cases, only two different and clearly distinct settings, one for right-hand and one for left-hand traffic, shall be possible, and the design shall preclude inadvertent shifting from one setting to the other or setting in an intermediate position. Where two different setting positions are provided for the filament lamp, the components for attaching the filament lamp to the reflector must be so designed and made that, in each of its two settings, the filament lamp will be held in position with the precision required for headlamps designed for traffic on only one side of the road. Conformity with the requirements of this paragraph shall be verified by visual inspection and, where necessary, by a test fitting.

        5.7. Complementary tests shall be done according to the requirements of Annex 4 to ensure that in use there is no excessive change in photometric performance.

        5.8. If the lens of the headlamp is of plastic material, tests shall be done according to the requirements of Annex 6.

        5.9. On headlamps designed to provide alternately a driving beam and a passing beam, or a passing beam and/or a driving beam designed to become bend lighting, any mechanical, electromechanical or other device incorporated in the headlamp for these purposes shall be so constructed that:

        5.9.1. the device is strong enough to withstand 50,000 operations without suffering damage despite the vibrations to which it may be subjected in normal use;

        5.9.2. in the case of failure the illumination above the line H-H shall not exceed