Document ID: chunk:federal_register_of_legislation:F2023C00228:reg:1:p8
Version: federal_register_of_legislation:F2023C00228
Segment Type: reg
Provision Reference: reg 1 (pt 8/40)
Character Range: 360287–362881

the subject of special headlamps for agricultural or forest tractors and other slow-moving vehicles.
[*/] Illumination values in any point of zones A and B, which also lies within zone III, shall not exceed 0.7 lux.
[11/] This requirement will be the subject of a recommendation for the benefit of administrations.
  [1] Distinguishing number of the country which has granted/refused/withdrawn approval (see approval provisions in the Regulation).
  [2] Strike out what does not apply.
[3] Indicate the appropriate marking selected from the list below:

CR,  CR,  CR,  C/R,  C/R,  C/R,  C,  C,  C,  C/,  C/,  C/,  R CR PL,  CR PL,  CR PL,  C/R PL,  C/R PL,  C/R PL
                                                          
C PL,  C PL,  C PL,  C/PL,  C/PL,  C/PL,   RPL
              

[1/] Letters in brackets refer to headlamps intended for left-hand traffic.
[9/] See the corresponding footnote in the text of the Regulation.
[1/] When the driving beam is reciprocally incorporated with the passing beam, HV in the case of the driving beam shall be the same measuring point as in the case of the passing beam.
[2/] HL and HR: points on "hh" located at 1.125 m to the left and to the right of point HV respectively.
[2/] Should two or more lamp filaments be simultaneously lit when headlamp flashing is used, this shall not be considered as being normal use of the filaments simultaneously.
[1/] When the tested headlamp is grouped and/or reciprocally incorporated with signalling lamps, the latter shall be lit for the duration of the test.  In the case of a direction indicator lamp, it shall be lit in flashing operation mode with an on/off time ratio of approximately one to one.
[3/] NaCMC represents the sodium salt of carboxymethyl cellulose, customarily referred to as CMC.  The NaCMC used in the dirt mixture shall have a degree of substitution (DS) of 0.6-0.7 and a viscosity of 200-300 cP for a 2 % solution at 20 degrees C.
[4/] The tolerance on quantity is due to the necessity of obtaining a dirt that correctly spreads out on all the plastic lens.
[5/] 50 V is situated 375 mm below HV on the vertical line v-v on the screen at 25 m distance.
[1/] For L2 it is recommended to use a focal distance of about 80 mm.
[/9] See the corresponding footnote in the text of the Regulation.
[1/] The provisions applicable to the approval of incandescent filament lamps for headlamps emitting an asymmetrical passing beam or a driving beam or both are incorporated in Regulation No. 37.
[1/] Nothing in this regulation shall prevent a Party to the Agreement applying this