Amendment 1 has been prepared purely as documentation tool. The authentic and legally binding texts are . This document incorporates the following change:

Amendment 2 has been prepared purely as documentation tool. The authentic and legally binding texts are . This document incorporates the following change:

Amendment 3 has been prepared purely as documentation tool. The authentic and legally binding texts are . This document incorporates the following change:

Amendment 4 has been prepared purely as documentation tool. The authentic and legally binding texts are . This document incorporates the following change:

Amendment 5 has been prepared purely as documentation tool. The authentic and legally binding texts are . This document incorporates the following change:

Amendment 6 has been prepared purely as documentation tool. The authentic and legally binding texts are . This document incorporates the following change:

Amendment 7 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2018/30. This document incorporates the following change:

Proposal to introduce requirements and test specifications for light emitting diode (LED) light sources for forward lighting.

Amendment 8 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2018/90. This document incorporates the following change:

Proposal to align the approval code for light sources approved according to Regulation No. 129 with the approval number as prescribed by Revision 3 of the 1958 Agreement, schedule 4. Parallel proposals have been submitted with regard to UN R37 and R99.

Amendment 9 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2019/19. This document incorporates the following change:

Proposal to introduce requirements and test specifications for light emitting diodes (LED) substitute light sources, including to

1. introduce provisions for LED substitute light sources into Regulation No. 128;
2. introduce a new category sheet PY21W/LED based on LED technology into the Consolidated Resolution (R.E.5);
3. establish equivalence criteria as guidance for specifying sheets for LED substitute light source categories. (These guidelines are intended for publication, with the agreement of GRE, on the GRE website under “reference documents”, similar to criteria for new filament light sources for head lighting (GRE-77-04). In addition, these criteria are being prepared for insertion in publication IEC 60810.);
4. a draft proposal to IEC concerning the cap/holder system of the LED light source category PY21W/LED, for information to GRE (GRE-80-03) only, to show the interlock feature and the differences with the cap/holder system of its counterpart filament light source category PY21W; and
5. to allow under Annex 4, paragraph 1.2. a limited increase of luminous flux from 1 minute to 30 minutes within the given minimum and maximum requirements (to remove an unnecessary design restriction).

Amendment 10 has been prepared purely as documentation tool. The authentic and legally binding text is WP.29/2020/31. This document incorporates the following change:

Proposal to insert a minimum luminance gradient as an alternative criteria. The current text requires a certain “asymmetry” of the Light Emitting Area (LEA) in order to ensure a “minimum worst-case gradient”; however, this requirement has been deemed too design-restrictive.

UN R128 has been prepared purely as documentation tool. The authentic and legally binding texts are . This document incorporates the following change: