Document ID: chunk:federal_register_of_legislation:F2023C00154:reg:1:p10
Version: federal_register_of_legislation:F2023C00154
Segment Type: reg
Provision Reference: reg 1 (pt 10/15)
Character Range: 121645–124417

driving-beam lamp (D1 + D2 means two driving-beams)
F: front fog lamp
All following grouped headlamps and front fog lamps together with the added marking symbols are given as examples and are not exhaustive.

:  means a cycle of 15 minutes off and 5 minutes lit.

Annex 11

Centre of reference
Diameter = a = 2 mm min.

This optional mark of the centre of reference shall be positioned on the lens at its intersection with the reference axis of the front fog lamp.
The above drawing represents the mark of the centre of reference as projected on a plane substantially tangential to the lens about the centre of the circle. The lines constituting this mark may either be solid or dotted.
Annex 12

Requirements in case of use of led module(s) or of light generators
1. General specifications
1.1. Each LED module or light-generator sample submitted shall conform to the relevant specifications of this Regulation when tested with the electronic light source control-gear(s) supplied, if any.
1.2. LED modules or light-generators shall be so designed as to be, and to remain in good working order when in normal use. They shall moreover exhibit no fault in design or manufacture.
1.3. LED modules or light-generators shall be tamperproof.
1.4. The design of removable LED modules shall be such that:
1.4.1. After removal and replacement of the module the photometric requirements of the headlamp shall still be met;
1.4.2. Non-identical LED modules within the same lamp housing cannot be interchanged.
1.5. In the case of LED modules:
1.5.1. The geometric position and dimensions of the elements for optical radiation and shielding, if any, shall be as indicated on the submitted data sheet.
1.5.2. The measurement shall be made using optical methods through the transparent envelope, after ageing with the light source supplied by the electronic light source control-gear at test voltage.
1.5.3. The position and dimension and transmission of the stripes or shields, if any, shall be as indicated on the submitted data sheet.
2. Manufacture
2.1. The transparent envelope (e.g. bulb) of the light source shall exhibit no marks or spots, which might impair their efficiency and their optical performance.
2.2. In case of LED modules or light-generator(s):
2.2.1. The LED(s) on the LED module shall be equipped with suitable fixation elements.
2.2.2. The fixation elements shall be strong and firmly secured to the light source(s) and the LED module.
2.2.3. The light source in the light generator shall be equipped with suitable fixation elements.
2.2.4. The fixation elements shall be strong and firmly secured to the light source(s) and the light generator.
3. Test conditions
3.1. Application and relaxation
3.1.1. All samples shall be tested as specified in paragraph