Document ID: chunk:federal_register_of_legislation:F2023C00153:front:0:p11
Version: federal_register_of_legislation:F2023C00153
Segment Type: other
Provision Reference: 
Character Range: 31240–33987

series of amendments.

It is so designed, that the filament of the passing beam can be lit together simultaneously with the driving beam and/or another reciprocally incorporated lighting function.

       Annex 3

       PHOTOMETRIC TESTS

       1. For aiming, the aiming screen shall be located at a distance of at least 10 m in front of the headlamp, the h-h line shall be horizontal. For measurement, the photoelement shall be located at a distance of 25 m in front of the headlamp and perpendicular to the line joining the filament of the filament lamp and the point HV.

       2. Laterally, the headlamp shall be so aimed that the beam centre of the driving beam is on the vertical line v-v.

       3. Vertically, the headlamp shall be so aimed that the "cut-off" of the passing beam is situated 250 mm below the line h-h.

       4. The headlamp when aimed according to paragraphs 2 and 3 above, similar to the conditions of the driving beam, shall meet the following conditions:

       4.1 the luminous centre of the driving beam shall be situated not more than 0.6 degrees above or below the line h-h;

       4.2 the illumination of the driving-beam shall attain its maximum value Emax. in the centre of the entire beam pattern and decrease laterally;

       4.3 the maximum illumination (Emax) of the driving beam shall be at least 32 lux.

       4.3.1 32 lux for class MB headlamps;

       4.4 the illumination produced by the driving beam shall meet the following values:

       4.4.1 the point of intersection (HV) of lines h-h and v-v shall be situated within the isolux 90 % of maximum illumination;

       4.4.2 starting from point HV, horizontally to the right and left, the illumination of the driving beam shall be not less than 12 lux for class MB-headlamps up to a distance of 1.125 m and not less than 3 lux to a distance of 2.25 m.

       4.5 the illumination produced by the passing beam shall meet the following values: [*/]

Measuring point                               Class MB headlamp
Any point on and above the line h-h           < 0.7 lux
Any point on the line 50L-50R except 50 V */  > 1.5 lux
Point 50 V                                    >3 lux
Any point on the line 25L-25R                 > 3 lux
Any point in zone IV                          < 1.5 lux

       5. MEASURING AND AIMING SCREEN

       (dimensions in mm for 25 m distance)

For the filament lamps, categories S1 or S2 according to Regulation No. 37 shall be used.

Annex 4

TESTS FOR STABILITY OF PHOTOMETRIC PERFORMANCE OF HEADLAMPS IN OPERATION

TESTS ON COMPLETE HEADLAMPS

Once the photometric values have been measured according to the prescriptions of this Regulation, in points for Emax for driving beam and HV, 50 R, 50 L, B