Document ID: chunk:federal_register_of_legislation:F2023C00228:reg:1:p14
Version: federal_register_of_legislation:F2023C00228
Segment Type: reg
Provision Reference: reg 1 (pt 14/40)
Character Range: 374974–377576

an on/off time ratio of approximately one to one.
[2/] Should two or more lap filaments be simultaneously lit when headlamp flashing is used, this shall not be considered as being normal use of the filaments simultaneously.
[2/] NaCMC represents the sodium of carboxymethylcellulose, customarily referred to as CMC. The NaCMC used   in the dirt mixture shall have a degree of subsitution (DS) of  0.6-0.7 and 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 375mm below HV on the vertical line v-v on the screen at 25m distance.
[1/] For L2 it is recommended to use a focal distance of about 80mm.
[1/] Letters in brackets refer to headlamps intended for left-hand traffic.
[14/] See the corresponding footnote in the text of the Regulation.
[1/] Nothing in this Regulation shall prevent a Party to the Agreement applying this Regulation from prohibiting the combination of a headlamp incorporating a lens of plastic material approved under this Regulation with a mechanical headlamp-cleaning device (with wipers).
[2/] Application for approval of a filament lamp: see Regulation No. 37.
[3/] In the case of headlamps designed to meet the requirements of traffic moving on one side of the road only (either right or left), it is further recommended that the area which can be occulted to prevent discomfort to users in a country where traffic moves on the side of the road opposite to that of the country for which the headlamp was designed should be outlined indelibly on the front lens.  This marking is not necessary, however, where the area is clearly apparent from the design.
[4/] If the lens cannot be detached from the main body of the headlamp, a space on the lens shall be sufficient.
[5/] 1 for Germany, 2 for France, 3 for Italy, 4 for the Netherlands, 5 for Sweden, 6 for Belgium, 7 for Hungary, 8   for the Czech Republic, 9 for Spain, 10 for Yugoslavia, 11 for the United Kingdom, 12 for Austria, 13 for Luxembourg, 14 for Switzerland, 15 (vacant), 16 for Norway, 17 for Finland, 18 for Denmark, 19 for Romania, 20 for Poland, 21 for Portugal and 22 for the Russian Federation, 23 for Greece, 24 and 25 (vacant), 26 for Slovenia, and 27 for Slovakia, 28 for Belarus and 29 for Estonia, 30 (vacant), 31 for Bosnia and Herzegovina, 32-36(vacant) and 37 for Turkey.  Subsequent numbers will be assigned to other countries in the chronological order in which they ratify or accede to the Agreement concerning the Adoption of Uniform