The values inside figure A3-V are in cd. The directions H = O° and V = O° correspond to the axis of reference. On the vehicle they are horizontal, parallel to the median longitudinal plane of the vehicle and oriented in the required direction of visibility. They pass through the centre of reference. The values shown in figure A3-V give, for the various directions of measurement, the minimum intensities in cd. 2.6. Standard light distribution for rear fog lamps Figure A3-VI: distribution for rear fog lamps If visual examination of a light appears to reveal substantial local variations of intensity, a check shall be made to ensure that, outside the axes, no intensity measured within the rhombus defined by the extreme directions of measurement is below 75 cd (see figure above). 2.7. Standard light distribution for side marker lamps 2.7.1. SM1 category of side marker lamps Figure A3-VII: distribution for side marker lamps SM1 Minimum values: 0.6 cd at any point other than the reference axis, at which it shall be 4.0 cd Maximum values: 25.0 cd at any point 2.7.2. SM2 category of side marker lamps Figure A3-VIII: Light distribution for side marker lamps SM2 Minimum values: 0.6 cd at any point Maximum values: 25.0 cd at any point 2.7.3. SM1 and SM2 category of side marker For SM1 and SM2 category of side marker lamps it may be sufficient to check only five points selected by the Type Approval Authority. 3. Measurement points for rear-registration plate illuminating lamps 3.1. Category 1a - tall plate (340 x 240 mm) Figure A3-IX: Measuring points for plate size 340 x 240 mm 3.2. Category 1b - wide plate (520 x 120 mm) Figure A3-X: Measuring points for plate size 520 x 120 mm
The values inside figure A3-V are in cd. The directions H = O° and V = O° correspond to the axis of reference. On the vehicle they are horizontal, parallel to the median longitudinal plane of the vehicle and oriented in the required direction of visibility. They pass through the centre of reference. The values shown in figure A3-V give, for the various directions of measurement, the minimum intensities in cd. 2.6. Standard light distribution for rear fog lamps Figure A3-VI: distribution for rear fog lamps If visual examination of a light appears to reveal substantial local variations of intensity, a check shall be made to ensure that, outside the axes, no intensity measured within the rhombus defined by the extreme directions of measurement is below 75 cd (see figure above). 2.7. Standard light distribution for side marker lamps 2.7.1. SM1 category of side marker lamps Figure A3-VII: distribution for side marker lamps SM1 Minimum values: 0.6 cd at any point other than the reference axis, at which it shall be 4.0 cd Maximum values: 25.0 cd at any point 2.7.2. SM2 category of side marker lamps Figure A3-VIII: Light distribution for side marker lamps SM2 Minimum values: 0.6 cd at any point Maximum values: 25.0 cd at any point 2.7.3. SM1 and SM2 category of side marker For SM1 and SM2 category of side marker lamps it may be sufficient to check only five points selected by the Type Approval Authority. 3. Measurement points for rear-registration plate illuminating lamps 3.1. Category 1a - tall plate (340 x 240 mm) Figure A3-IX: Measuring points for plate size 340 x 240 mm 3.2. Category 1b - wide plate (520 x 120 mm) Figure A3-X: Measuring points for plate size 520 x 120 mm
ECE-TRANS-WP29-GRE-2018-02e.docx