Document ID: chunk:federal_register_of_legislation:F2023C00228:front:0:p24
Version: federal_register_of_legislation:F2023C00228
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giving acceptable accuracy and reproducible results.

       2.2. Test results

       2.2.1. The result expressed in milliradians (mrad) shall be considered as acceptable when the absolute value delta rI = (r3 - r60) recorded on the headlamp is not more than 1.0 mrad (delta rI < 1.0 mrad).

       2.2.2. However, if this value is more than 1.0 mrad but not more than 1.5 mrad (1.0 mrad < delta rI < 1.5 mrad) a second headlamp shall be tested as described in Paragraph 2.1 of this Annex after being subjected three consecutive times to the cycle as described below, in order to stabilize the position of mechanical parts of the headlamp on a  base representative of the correct installation on the vehicle:

       Operation of the passing lamp for one hour (the voltage shall be adjusted as specified in Paragraph 1.1.1.2 above).

       Period of rest for one hour.

       The headlamp type shall be considered as acceptable if the mean value of the absolute values delta rI measured on the first sample and delta rII measured on the second sample is not more than 1.0 mrad.

Annex 5

EXAMPLES OF ARRANGEMENTS OF APPROVAL MARKS

(See Paragraph 4 of this Regulation)

Figure 1

The headlamp bearing the approval marking shown above is a headlamp meeting the requirements of this Regulation in respect of both the driving beam and the  passing beam, and which is designed for right-hand traffic only.

Note:

The approval number and the additional symbols shall be placed close to the circle and either above or below the letter "E", or to the right or left of that letter.  The digits of the approval number shall be on the same side of the letter "E" and face the same direction.

The use of Roman numerals as approval numbers should be avoided so as to prevent any confusion with other symbols.

Figure 2

The headlamp bearing the approval mark shown above is a headlamp meeting the requirements of this Regulation with respect to both the passing beam and the driving beam, and designed:

       Figure 2 = For left hand traffic only

Figure 3a, 3b = For both traffic systems, by means of an adjustment as desired of the optical unit or the lamp.

The headlamp bearing the approval mark shown above is a headlamp incorporating the lens of plastic material meeting the requirements of this Regulation with respect to the passing beam only, and designed:

Figure 4 = For both traffic systems.

Figure 5 = For right-hand traffic only.

The headlamp bearing the approval mark shown above is a headlamp meeting the requirements of this Regulation:

Figure 6 = With respect to the passing beam only, and designed for left-hand traffic only.

Figure 7= With