Document ID: chunk:federal_register_of_legislation:F2023C00228:front:0:p76
Version: federal_register_of_legislation:F2023C00228
Segment Type: other
Provision Reference: 
Character Range: 204717–207875

provide both a passing beam and a driving beam it shall comply with the requirements referred to in paragraphs 6.2.5. to 6.2.7. and 6.3.

       6.2.4. Where a headlamp so aimed does not meet the requirements referred to in paragraphs 6.2.5. to 6.2.7. and 6.3., its alignment may be changed, provided that the axis of the beam is not laterally displaced by more than 1 degrees (=44cm) to the right or left.[14/] To facilitate alignment by means of the "cut-off", the headlamp may be partially occulted in order to sharpen the "cut-off".

       6.2.5. The illumination produced on the screen by the passing beam shall meet the following requirements:

       Point on Measuring Screen

Headlamp for right-hand traffic  Headlamp for left-hand traffic  Required illumination in lux
Point B                          50 L                            Point B                       50 R  < 0.4
" 75                             R                               " 75                          L     > 12
" 75                             L                               " 75                          R     < 12
" 50                             L                               " 50                          R     < 15
" 50                             R                               " 50                          L     > 12
" 50                             V                               " 50                          V     > 6
" 25                             L                               " 25                          R     > 2
" 25                             R                               " 25                          L     > 2
Any point in zone III            < 0.7
Any point in zone IV             > 3
Any point in zone I              < 2 x (E50R or E50L)[*]

       6.2.6. There shall be no lateral variations detrimental to good visibility in any of the zones I, II, III, and IV.

       6.2.7. The illumination values in zones "A" and "B" as shown in Figure C in Annex 4 shall be checked by the measurement of the photometric values of points 1 to 8 on this Figure; these values shall lie within the following limits:

       1+2+3 > 0.3 lux, and

       4+5+6 > 0.6 lux, and

       0.7 lux > 7 > 0.1 lux and

       0.7 lux > 8 > 0.2 lux [*/]

       These new values shall not be required for headlamps which have been approved before the application date of Supplement 4 to the 04 series of amendments to this Regulation (13 January 1993) nor to the extensions of such approvals.

       6.2.8. Headlamps designed to meet the requirements of both right-hand and left-hand traffic must, in each of the two setting positions of the optical unit or of the filament lamp, meet the requirements set forth above for the corresponding direction of traffic.

       6.3. Provisions regarding driving beams

       6.3.1. In case of  a headlamp designed  to provide a driving beam and a passing  beam, measurements of the illumination produced on the screen by the driving beam shall be taken with the same headlamp alignment as for measurements under paragraphs 6.2.5.  to 6.2.7. above; in the case of a headlamp proving a driving beam only, it shall be so