Document ID: chunk:federal_register_of_legislation:F2023C00142:front:0:p3
Version: federal_register_of_legislation:F2023C00142
Segment Type: other
Provision Reference: 
Character Range: 7587–10900

face of a lens;

       1.3.                           "Ballast" means the electrical supply of the gas-discharge light source. This ballast may be partly or completely inside or outside the headlamp;

       1.4.                           "Matched pair" means the set of lamps of the same function on the left- and right-hand side of the vehicle;

       1.5.                           Additional definitions are given in Regulation No. 48.

       1.6.                           Headlamps of different "types" are headlamps which differ in such essential respects as:

         1.6.1.                    the trade name or mark;

         1.6.2.                    the characteristics of the optical system;

       1.6.3.                    the inclusion or elimination of components capable of altering the optical effects by reflection, refraction, absorption and/or deformation during operation.  However, the fitting or elimination of filters intended solely to change the colour of the beam and not its light distribution does not entail a change of type;

       1.6.4.                    suitability for right-hand or left-hand or for both traffic systems;

       1.6.5.                    the kind of beam produced (passing beam or driving beam or both);

       1.6.6.                    the materials constituting the lenses and coating, if any;

       1.7.                           "Light-transmitting components" means any part of the headlamp which transmits light for illumination, such as outer and inner lenses, lens or reflector coatings.

       2.                                 APPLICATION FOR APPROVAL OF A HEADLAMP [2/]

       2.1. The application for approval shall be submitted by the owner of the trade name or mark of the headlamp or by his duly accredited representative.  It shall specify:

       2.1.1. whether the headlamp is intended to provide a passing beam, a driving beam or both;

       2.1.2. whether, if the headlamp is intended to provide a passing beam, it is designed for both left-hand and right-hand traffic or for either left-hand or right-hand traffic only;

       2.1.3. if the headlamp is equipped with an adjustable reflector, the mounting positions of the headlamp in relation to the ground and the longitudinal median plane of the vehicle;

       2.1.4. the maximum vertical angles above and below the nominal positions which the aiming device can achieve;

       2.1.5. which light sources are energised when the various beam combinations are used;

       2.1.6. the category of gas-discharge light source as listed in Regulation No. 99.

       2.2. Every application shall be accompanied by:

       2.2.1. drawings in triplicate in sufficient detail to permit identification of the type (see paragraphs 3.2 and 4.2 below).  The drawings must show the position intended for the approval number and the additional symbols in relation to the circle of the approval mark, and must show the headlamp in vertical (axial) section and in front elevation, with main details of the optical design including the flutings, if applicable.

       2.2.2. A brief technical specification including the make and types of the ballast(s), where it applies.

       2.2.3. Samples, as follows:

       2.2.3.1. for approval of a headlamp, two samples with standard