Document ID: chunk:federal_register_of_legislation:F2023C00154:front:0:p17
Version: federal_register_of_legislation:F2023C00154
Segment Type: other
Provision Reference: 
Character Range: 42217–46697

so adjusted, the front fog lamp shall meet the photometric requirements in the table below (refer also to paragraph 2.2. of Annex 4 to this Regulation):

                                                                                              Vertical position*   Horizontal position*
                                                                                              above h +            left of v: -           Luminous intensity
Designated lines or zones                                                                     below h -            right of v: +          (in cd)                   To comply
Point 1, 2**                                                                                 +60°                 ±45°                   60 max                     All points
Point 3, 4**                                                                                 +40°                 ±30°
Point 5, 6**                                                                                 +30°                 ±60°
Point 7, 10**                                                                                +20°                 ±40°
Point 8, 9**                                                                                 +20°                 ±15°
Line 1**                                                                                     +8°                  -26° to +26°           90 max                     All line
Line 2**                                                                                     +4°                  -26° to +26°           105 max                    All line
Line 3                                                                                       +2°                  -26° to +26°           170 max                    All line
Line 4                                                                                       +1°                  -26° to +26°           250 max                    All line
Line 5                                                                                       0°                   -10° to +10°           340 max                    All line
 Line 6***                                                                                    -2.5°                -10° to +10°           2,000 min                  All line
 Line 7***                                                                                    -6.0°                -10° to +10°           < 50 % of max. on line 6   All line
 Line 8L and R***                                                                             -1.5° to -3.5°       -22° and +22°          800 min                    One or more points
 Line 9L and R***                                                                             -1.5° to -4.5°       -35° and +35°          320 min                    One or more points
 Zone D***                                                                                    -1.5° to -3.5°       -10° to +10°           8,400 max                  Whole zone
 * The co-ordinates are specified in degrees for an angular web with a vertical polar axis.
 ** See paragraph 6.4.3.4. below.
 *** See paragraph 6.4.3.2. below.

6.4.3.1. The luminous intensity shall be measured either with white light or coloured light as prescribed by the applicant for use of the fog lamp in normal service. Variations in homogeneity detrimental to satisfactory visibility in the zone above the line 5 from 10 degrees left to 10 degrees right are not permitted.
6.4.3.2.  At the request of the applicant, two front fog lamps constituting a matched pair corresponding to paragraph 4.2.2.5. of this Regulation may be tested separately. In this case the specified requirements for lines 6, 7, 8, 9 and the Zone D in the table in paragraph 6.4.3. above apply to half the sum of readings of the right-hand and left-hand side front fog lamp. However each of the two front fog lamps shall meet at least 50 per cent of the minimum value required for line 6. Additionally, each of the two front fog lamps that constitute the matched pair corresponding to paragraph 4.2.2.5. of this Regulation are only required to meet the requirements of line 6 and line 7 from 5° inwards to 10° outwards.
6.4.3.3. Inside the field between lines 1 to 5 in Figure 3 of Annex 4, the beam pattern should be substantially uniform. Discontinuities in intensities detrimental to satisfactory visibility between the lines 6, 7, 8 and 9 are not permitted.
6.4.3.4.