Revision of TFSR-26-03 addresses H9 LEDr flux considerations and dual-voltage specification. The document proposes applying a single specification for H9 LEDr: 1875 lm ±10% @13.2V, representing a compromise between high-beam and low-beam applications. This luminous flux level is not critical, as high-beam measurements with H9 filament bulbs exceed legal minimums by more than 10%, and low-beam safety margins remain acceptable with limited flux increases. Additionally, a black-top limit of 50 cd/klm at control point zero is proposed for bulbs without black-top specification, and LEA sub-zone specifications (B1, B2, B3) for high-beam categories should be optimized to support beam performance.

This document defines essential dimensions, electrical characteristics, and photometrical requirements for LED light source category H9. The LED light source shall not exceed the specified envelope and shall function in either voltage polarity. Rated values include 26 watts at 12 volts and 26 watts minimum at 13.2 volts, with minimum luminous flux of 2000 lm and cap temperature not exceeding 100°C. The luminous flux measured at elevated ambient air temperature shall be at least 75% of objective luminous flux. The document specifies screen projection requirements, contrast requirements, and normalized luminous intensity distribution requirements across defined C-planes and test points.

This document specifies requirements for category H₁₀ LED light sources with PY20d caps. The light source shall not exceed the outlined envelope and shall function in either voltage polarity. Essential characteristics include rated values of 12 volts and 21 watts, with luminous flux of 1500 lm minimum at test voltage. The luminous flux measured at elevated ambient air temperature shall be at least 75% of objective luminous flux. Screen projection requirements define light-emitting area positioning using box systems. Normalized luminous intensity distribution requirements are specified in C-planes with defined test points and minimum/maximum intensity values in cd/klm.

This document defines category HIR2 LED light source specifications. The LED light source shall not exceed the envelope indicated in Figure 2, be concentric to the reference axis, and function in either voltage polarity. Essential characteristics include rated values at 12 volts DC of 26 watts power and 2000 lm minimum luminous flux. Cap temperature shall not exceed 63°C at test voltage or 100°C at elevated ambient air temperature. Luminous flux measured at elevated ambient air temperature shall be at least 75% of objective luminous flux. Light emitted shall be white. The contrast proportion of luminous flux shall be 100 minimum. Normalized luminous intensity distribution shall comply with specified limits in C-planes.

Based on LS-1691, this document defines specifications for HB3 LED light sources. LED light sources shall not exceed the specified envelope, function in either voltage polarity, and be rotated in the measuring holder until the reference lug contacts the holder plane. Essential electrical and photometric characteristics include rated values at 12V and 13.2V, with minimum luminous flux of 2000 lm and cap temperature limits. Luminous flux measured at elevated ambient air temperature shall be at least 75% of objective luminous flux. Screen projection requirements specify box system proportions for light emitting areas and contrast limits. Normalized luminous intensity distribution shall comply with specified limits in defined C-planes when measured at test voltage.

LED replacement light sources without type approval are being sold online and offline and are unsafe for public roads; vehicles equipped with such products would fail PTI. LED replacement light sources with type approval are available either at national level or according to UN R37, and are safe and legal for public roads; vehicles equipped with approved LED replacement light sources shall NOT fail PTI. Approval marking on installed light sources is not accessible during PTI; verification may involve a sticker on headlamp housing, type approval documents, or packaging, with removal of the light source as a last resort to verify the approval marking.

The Task Force on LED Substitutes/Retrofits reports on progress toward GRE-94. Completed actions include LED Substitutes (Step 1) and LED Replacements/Retrofits (Step 2) with administrative and technical items. Front Fog cluster H8, H16, HB4 was approved by WP29 in March 2026 and entered into force. High Beam cluster HB3, HIR2, H9 and H10 discussions began in WGLS in November 2025, with presentations to TF S/R in March 2026. H10 LEDr draft category sheet is submitted as informal document. Market Surveillance identified as necessary support activity, addressing control points from manufacturer to road including approval, import, point of sales, PTI, and enforcement.

The Task Force on Substitutes/Retrofits held its 27th meeting on 20 April 2026. The agenda TFSR-27-01 was adopted with focus on agenda item 10. The report of the 26th meeting TFSR-26-05 was confirmed. GTB WGLS will continue work on category sheet proposals for high beam cluster, anticipated for submission by end of May. H11 LEDr entered into force in November 2024; H8 LEDr, H16 LEDr, HB4 LEDr entered into force March 2026. Document TFSR-27-02 was reviewed page-by-page and agreed changes implemented; the secretary was asked to submit this document and the draft H10 LEDr proposal to GRE94 as informal documents. The next meeting is planned for 15 June 2026.

The meeting reviewed proposals for LED retrofit (LEDr) categories including H10 front fog lights and H9 high beam types for Regulation 37/RE.5. Key discussions addressed H10 failure requirements, H9 dual-voltage flux levels, and homogeneity requirements for B-type boxes. The task force also focused on market surveillance and enforcement mechanisms to ensure only approved LEDr products are used on public roads. The next meeting is scheduled for 20 April 2026.

Proposal to introduce new LED light source categories L2 and L3 in R.E.5. Further details can be found in informal document GRE-94-12.

Proposal to introduce introduce new light emitting diode (LED) light source categories LRR8A and LRR8B, to amend provisions in paragraph 3.1, group 1, group 2, and group 3 concerning phase out of certain light source categories and to introduce new LED replacement light source categories H8, H16 and HB4.

Proposal to introduce new light emitting diode (LED) replacement light source categories H8, H16 and HB4.

Proposal to introduce introduce new light emitting diode (LED) light source categories LRR8A and LRR8B and to amend provisions in paragraph 3.1, group 1, group 2, and group 3 concerning phase out of certain light source categories.

Proposal to introduce new light emitting diode (LED) light source categories LW7A and LW7B.

Proposal to introduce an alternative configuration for the light emitting diode replacement (LEDr) light source category H11.

Proposal to introduce new light emitting diode (LED) light source categories LW7A and LW7B.

Informal document submitted by the Task Force on Substitutes / Retrofits (TFSR) to support and proposal changes to formal proposal GRE/2024/2.

Proposal to introduce an alternative configuration for the light emitting diode replacement (LEDr) light source category H11.

Proposal to introduce an alternative approach i.e. a new configuration for the light emitting diode (LED) replacement light source category H11.

Proposal from the task force on Substitute and Replacement lamps (TFSR) to address two alternative configurations involving differences in the “screen projection requirements” and “normalized luminous intensity distribution” based on full photometric light source equivalence and on bi-directional light source design.

Proposal to amend categories and clarify text in RE5 (ECE/TRANS/WP.29/1127) and its subsequent amendments 1 through 8.

Discussion of UN approval process versus national approval processes with request for guidance.

Proposal to amend categories and clarify text in RE5 (ECE/TRANS/WP.29/1127) and its subsequent amendments 1 through 8.

Proposal to update the specification of light source categories.

Proposal from GRE to introduce new light emitting diode (LED) replacement light source categories H11 and C5W and for the definition of an AE device.

Proposes to update the specification of light source categories.

Proposal by TF Substitutes/Retrofits provides supporting material for LEDr light sources equivalence report for C5W

A general reference to the definitions in R.E.5 is inserted in 2.1 and a specific reference to the definition of the “AE device” in R.E.5 is inserted in 2.2.2.2.2.b., in order to explain the term “AE device” where it first appears in the body text.

Proposal from the Task Force on Substitutes and Retrofits (TF SR) to introduce a new light emitting diode (LED) replacement light source category H11.

Proposal from the Task Force on Substitutes and Retrofits (TF SR) to introduce a new light emitting diode replacement light source (LEDr) category C5W.

Proposal to clarify and update RE5, including

1. to introduce a new light emitting diode (LED) substitute light source category H11/LED/6 for road illumination applications
2. to measure luminous flux and references to the internal shield for applicable filament light source categories
3. to add specifications for H7, H8/H8B, H11/H11B, H16/H16B and H18 light source categories with respect to the “g” parameter
4. to add a definition for light centre and associated amendment to the specification of the LR4 light source category
5. the use restriction for light emitting diode (LED) light source categories LW2, LW3, and LW5
6. specifications for Lx3, LR4 and Lx5 light source categories with respect to the cap/holder interface
7. specifications for specifications for LR1, LW2, L3, LR4, L5, and L1/6 light source categories with respect to test voltage
8. correcting some details of light source category specifications in the Consolidated Resolution on the common specification of light source categories, and
9. administrative updates of IEC cap sheet references in light source category specifications.

Revision of document GRE/2020/16.

Proposal to introduce a new light emitting diode (LED) replacement light source category H11.

Proposal to clarify and update RE5, including

1. measuring luminous flux and references to the internal shield for applicable filament light source categories
2. specifications for H7, H8/H8B, H11/H11B, H16/H16B and H18 light source categories with respect to the “g” parameter
3. definition for light centre and associated amendment to the specification of the LR4 light source category
4. the use restriction for light emitting diode (LED) light source categories LW2, LW3, and LW5
5. specifications for Lx3, LR4 and Lx5 light source categories with respect to the cap/holder interface
6. specifications for specifications for LR1, LW2, L3, LR4, L5, and L1/6 light source categories with respect to test voltage
7. correcting some details of light source category specifications in the Consolidated Resolution on the common specification of light source categories, and
8. administrative updates of IEC cap sheet references in light source category specifications.

Proposal to introduce a new light emitting diode (LED) substitute light source category H11/LED/6 for road illumination applications.

GRE Task Force on Substitutes/Retrofits revision of its proposal to introduce a new light emitting diode (LED) substitute light source category H11/LED for road illumination applications.

Proposal to amend light source categories L1A/6 and L1B/6 in the Consolidated Resolution on the common specification of light source categories (R.E.5). This proposal is intended to enter into force simultaneously with draft Supplement 10 to the original version of UN Regulation No. 128.

IEC support for the for choosing elevated ambient air temperature of 60°C and luminous flux limit of at least 70% at the points where luminous flux is measured. GRE/2019/21 Proposal for amendment to the Consolidated Resolution on the common specification of light source categories: the aim to introduce a new light emitting diode (LED) substitute light source category H11/LED for road illumination applications

Proposal to introduce new light emitting diode (LED) substitute light source categories C5W/LEDK, R5W/LED, W5W/LEDK and WY5W/LED.

Guide prepared by the GRE Substitutes/Retrofits Task Force to criteria for specifying LED substitute light source categories as equivalents for corresponding fliament light source categories.

Approach for addressing LED light sources as replacements for filament light sources via amendment of UN R37 rather than via “LED retrofits” provisions under UN R128.

Proposal to amend light source categories L1A/6 and L1B/6 in the Consolidated Resolution on the common specification of light source categories (R.E.5).

Proposal from the GRE Task Force on Substitutes/Retrofits to introduce a new light emitting diode (LED) substitute light source category H11/LED for road illumination applications.

Ideas on how to integrate LED retrofit light sources into UN R37 on filament light sources.