Amendment 1 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2019/81. This document incorporates the following change:

Proposal to

• clarify paragraph 2.1 with regard to definitions: “All the definitions given in the latest series of amendments to UN Regulation No. 48 in force at the time of application for type approval shall apply, unless otherwise specified in this UN Regulation or in the pertinent installation UN Regulations Nos. 53, 74 and 86.”
• amend the inboard visibility angle for rear position lamps in pairs in the new UN Regulation on Light-Signalling Devices (LSD)
• Use of LED substitute light source(s) is allowed and does not constitute a change of the lamp type. However, lamp performances shall be tested during type approval also with the LED substitute light source. Approval of the lamp using filament light source(s) is a prerequisite for approval of the lamp using LED substitute light source(s).
• Testing with LED substitute light sources is exempted from conformity of production control.
• The technical description shall include notice that the lamp also has to be approved with the LED substitute light source(s) according to UN R128 if the applicant has so determined.
• The approval marking or the Unique Identifier as well as the category or categories of LED substitute light source(s) prescribed, if any, shall be visible.
• The indication of both the holder of the filament light source and of its LED counterpart light source, if any, shall be explicitly provided.
• Introduce requirements for automatic switching from DRL to headlamp(s) if the maximum luminous intensity of DRL is above 700 cd.

Amendment 2 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2020/32. This document incorporates the following change:

Proposal to differentiate light source modules in cases where a signalling device contains more than one different module, to restore the sequential activation of direction indicators of categories 11, 11a, 11b, 11c and 12, which were included in UN Regulation No. 50 but omitted when UN R148 was developed during SLR Stage 1, to delete a footnote indicator, and to delete characters from a figure on the standard light distribution of devices.

UN R148 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2018/157. This document incorporates the following change:

Proposal for a new UN Regulation on light-signalling devices, consolidating and superseding provisions of UN Regulations Nos. 4, 6, 7, 23, 38, 50, 77, 87 and 91.