Document ID: chunk:federal_register_of_legislation:F2023C00228:reg:1:p10
Version: federal_register_of_legislation:F2023C00228
Segment Type: reg
Provision Reference: reg 1 (pt 10/15)
Character Range: 650344–653046

a passing beam).
[11/] Notwithstanding the provisions of article 3 of the 1958 Agreement concerning the Adoption of Uniform Conditions of Approval and Reciprocal Recognition of Approval for Motor Vehicle Equipment and Parts, the approval of an HSB unit under this Regulation shall not prevent the Contracting Parties to the Agreement applying this Regulation from prohibiting, on vehicles registered in their territory, the use of HSB units emitting a beam of either white or selective yellow light.
[12/] This requirement will be the subject to a recommendation to administrations.
[2/]1/  Distinguishing number of the country which has granted/extended/ refused/withdrawn approval (see approval provisions in the Regulation).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:
HSCR,  HSCR,  HSCR,  HSC,  HSC,  HSC,  HSR,  HSC/R,  HSC/R,  HSC/R,  HSC/,  HSC/,  HSC/,
                                
HSCR PL,  HSCR PL,  HSCR PL,  HSC PL,  HSC PL,  HSC PL,  HSC PL,  HSR PL,
                       
HSC/R PL,  HSC/R PL,  HSC/PL,  HSC/PL,  HSC/PL
                        

[1/] Letters in brackets refer to headlamps intended for left-hand traffic.
[10/] 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.
[1/] Should two filaments be simultaneously lit when headlamp flashing is used, this shall not be considered as being normal use of both filaments simultaneously.
[2/] 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 carboxymethylcellulose, 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/]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 ont he screen at 25 m distance.
[1/] For L2 it is recommended to use a focal distance of about 80 mm.
[1/] Letters in brackets refer to headlamps intended for left-hand traffic.
[10/] See the corresponding footnote in the text of