Document ID: chunk:federal_register_of_legislation:F2023C00228:reg:1:p23
Version: federal_register_of_legislation:F2023C00228
Segment Type: reg
Provision Reference: reg 1 (pt 23/35)
Character Range: 505817–508731

approved in France (E2) under approval number 81151, consisting of:

 A headlamp, Class B, emitting a passing beam and a driving beam with a maximum luminous intensity between x and y candelas, meeting the requirements of this Regulation, and

 A headlamp, Class B, emitting a driving beam designed for both traffic systems with a maximum luminous intensity between w and z candelas, meeting the requirements of this Regulation, the maximum luminous intensities of the driving beams as a whole being comprised between 86 250 and 101 250 candelas.
Annex 3
MEASURING SCREEN

A.  Headlamp for right-hand traffic
(dimension in mm with screen at 25 m distance)

                                h-h: horizontal plane ) passing through
  v-v: vertical plane ) focus of headlamp

B.  Headlamp for left-hand traffic
(dimension in mm with screen at 25 m distance)

STANDARD EUROPEAN BEAM

                                     h-h : horizontal plane ) passing through
   v-v : vertical plane ) focus of headlamp

 Figure C

      Note: Figure C shows the measuring points for right-hand traffic.  Points 7 and 8 move to their corresponding location at the right-hand side of the picture for left-hand traffic.

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 the point for Emax for driving beam and in points HV, 50 R, B 50 L for passing beam (or HV, 50 L, B 50 R for headlamps designed for left-hand traffic) a complete headlamp sample shall be tested for stability of photometric performance in operation.  "Complete headlamp" shall be understood to mean the complete lamp itself including those surrounding body parts and lamps which could influence its thermal dissipation.

       1.  TEST FOR STABILITY OF PHOTOMETRIC PERFORMANCE

       The tests shall be carried out in a dry and still atmosphere at an ambient temperature of 23°C + 5°C, the complete headlamp being mounted on a base representing the correct installation on the vehicle.

      1.1.  Clean headlamp

       The headlamp shall be operated for 12 hours as described in paragraph 1.1.1. and checked as prescribed in paragraph 1.1.2.

1.1.1. Test procedure [15]/

        The headlamp shall be operated for a period according to the specified time, so that:

            1.1.1.1. (a) In the case where only one lighting function (driving or passing beam or front fog lamp) is to be approved, the corresponding filament is lit for the prescribed time, [16]/

            (b)               In the case of a headlamp with a passing beam and one or more driving beams or in case of a headlamp with a passing beam and a front fog lamp:

                (i) the headlamp shall be subjected to the following cycle until the time specified is reached:
                 15 minutes, passing-beam