Document ID: chunk:federal_register_of_legislation:F2023C00143:reg:25:p7
Version: federal_register_of_legislation:F2023C00143
Segment Type: reg
Provision Reference: reg 25 (pt 7/14)
Character Range: 38721–41648

20,

       A front fog lamp approved in accordance with the 02 series of amendments to Regulation No. 19;

       A front direction indicator lamp of category 1a approved in accordance with the 01 series of amendments to Regulation No. 6.

       6. Lamp reciprocally incorporated with a headlamp

       The above example corresponds to the marking of a lens intended to be used in different types of headlamps, namely:

       Either

       A headlamp with a passing beam designed for right- and left-hand traffic and a driving beam with a maximum intensity comprised between 86,250 and 111,250 candelas (indicated by the number 30) approved in the Federal Republic of Germany (E1) in accordance with the requirements of Regulation No. 8 as amended by the 04 series of amendments,

       which is reciprocally incorporated with

       A front position lamp approved in accordance with the 02 series of amendments to Regulation No. 7;

       Or

       A headlamp with a passing beam designed for right- and left-hand traffic and a driving beam, approved in the Federal Republic of Germany (E1) in accordance with the requirements of Regulation No. 1 as amended by the 01 series of amendments,

       which is reciprocally incorporated with

       The same front position lamp as above;

       Or

       even either of the above-mentioned headlamps approved as a single lamp.

       The main body of the headlamp shall bear the only valid approval number, for instance:

       Annex 4

       PHOTOMETRIC MEASUREMENTS

       1. Measurement methods

       1.1. During photometric measurements, stray reflections shall be avoided by appropriate masking.

       1.2. In case the results of measurements should be challenged, measurements shall be carried out in such a way as to meet the following requirements:

       1.2.1. The distance of measurement shall be such that the law of the inverse of the square of the distance is applicable;

       1.2.2. The measuring equipment shall be such that the angular aperture of the receiver viewed from the reference centre of the light is comprised between 10 degrees and 1 degrees;

       1.2.3. The intensity requirement for a particular direction of observation shall be deemed to be satisfied if that requirement is met in a direction deviating by not more than one-quarter of a degree from the direction of observation.

       2. Table of standard light distribution

        Table of light distribution for category S3 stop-lamp

10°  32   -|-  64   -|-  32
5°   64   100  100  100  64
0°   64   100  100  100  64
5°   64   100  100  100  64
     10°  5°   0°   5°   10°

       2.1. The direction H = 0 degrees and V = 0 degrees corresponds to the reference axis.  (On the vehicle it is horizontal, parallel to the median longitudinal plane of the vehicle and oriented in the required direction of visibility.)  It passes through the centre of reference.