Proposal to replace ECE/TRANS/WP.29/GRBP/2025/25

TF-AVRS reports progress on adapting GRBP regulations to bring automated vehicles within their scope. Working documents for UN R28, R51, R138, R141, and R165 are planned for GRBP 82 in September 2025, with R64 and R142 following at GRBP 83. The task force, chaired by the Netherlands with OICA secretariat, coordinates with TF-FADS and TF-AVC on definitions, vehicle categories, and ADS requirements. Approval of amended regulations is targeted for WP.29 in June 2026.

Proposal to replace ECE/TRANS/WP.29/GRBP/2024/8, applies also to UN R117

Proposal to make a correction to the procedure of free rolling tyre noise testing described in Annex 8.

Supplement 7 introduced an inconsistency in R51.03 Annex 8. As currently
written, it requires free-rolling tyre noise testing to be conducted in
accordance with both ISO 362-3:2016 and Annex 3, Appendix 3

Addresses a real-life situation that is not considered by current ice grip test conditions: the wet ice (or black ice) conditions.

Proposal for new provisions for the track characterization with additional new text and re-introduces deleted text

Proposed amendments to the initial proposal

Basel Convention on the Control of Transboundary Movements of hazardous wastes and their Disposal

The IWG RD-ASEP Subgroup on UN R138 and UN R51 held 13 meetings between October 2024 and September 2025 to amend both regulations regarding sound emissions of electric vehicles. On UN R51, the group agreed to introduce electric vehicles into Annex 7 (ASEP) scope and to add optional sounds and SPL limit lines for M₁ and N₁ vehicles based on vehicle speed, using OICA proposal GRBP/2025/29 as basis. On UN R138, the group aimed to clarify existing text, remove grey zones, and ensure adequate safety levels while limiting environmental impact through maximum SPLs. Working documents are planned for submission to GRBP in February 2026.

Proposal to amend ECE/TRANS/WP.29/GRBP/2025/27

Proposal to clarify the gear selection procedure pursuant to the amendment to allow deviation from the reference acceleration a_wot,ref requirement for Conformity of Production tests.

Proposal to replace references to UN GTR 21 by its type-approval equivalent UN R177, provide transitional provisions pursuant to amendments introduced in Supplements 10 and 11, and clarify calibration provisions and procedure for system check (cf: ISO 362).

Proposal from the GRBP task force on Automated Vehicles Regulation Screening for amendments to enable the application of UN R141 to ADS vehicles.

Proposal from the GRBP task force on Automated Vehicles Regulation Screening to amend UN R165 to enable application to ADS vehicles.

Proposal from the GRBP task force on Automated Vehicles Regulation Screening to enable application of UN R28 to ADS vehicles.

Proposal from the GRBP task force on Automated Vehicles Regulation Screening to enable application of UN R138 to ADS vehicles.

Proposal from the GRBP task force on Automated Vehicles Regulation Screening to enable application of UN R51 to ADS vehicles.

Proposal to clarify tyre abrasion provisions, including to add an ice temperature range of -5°C to -2°C to the test conditions for ice grip tyres.

Proposal for a new UN Regulation for the approval of new pneumatic tyres of class C1 that conform to UN R117 with regard to their abrasion performance.

Proposal from the GRBP task force on Tyre Abrasion to delete provisions from UN R117 that are covered by the proposal for a new UN Regulation on tyre abrasion.

Proposal to cover all types of electric vehicles (xEVs) in the provisions of ASEP (Annex 7) in UN Regulation No. 51.

Proposal to enable the application of the Regulation to vehicles equipped with automated driving systems (ADS).

Proposal to enable application of the Regulation to vehicles equipped with Automated Driving Systems (ADS).

Proposal to introduce a “default mode”, to specify requirements to be applied to the emission of Enhanced Exterior Sound (EES), with the corresponding transitional provisions, and to draw a limit curve to introduce electric vehicles and hybrid electric vehicles that can be propelled without an internal combustion engine operating in the scope of ASEP (Annex 7).

Proposal to update references to the latest version of standard ISO 362-3 (Indoor testing).

Proposal to update references the latest international standard specifications ASTM
F2872-25, F2871-25 and F3678-25.

The proposal to avoid certifying bicycle tyres as moped tyres.

Proposal to clarify how to mark the tyre in the case of implement tyres of speed category symbol D and E for mixed applications where the load index shall be the same for free rolling and drive wheel application.

Proposal to

1. delete para. 2.48. concerning material supplier,
2. amend para. 2.51. by referring to the material supplier only and cancel the reference to the material manufacturer,
3. simplify the list of tyres classified as tyre for use in severe snow conditions to be submitted at the application for approval, and
4. clarity and correct certain paragraphs

Proposal to:

1. Clarify that the “supplier of the tread used for the retreading process” is responsible for conformity of production of the
   supplied tread,
2. Align the classification “traction tyre” with UN R117
3. Provide transitional provisions to manage the switch from the requirements given in paragraph 6.2.1. to the ones given in the paragraph 6.2.2.,
4. Correct the omission of provisions for “professional off-road tyre” and their alignment with UN R30,/li>
5. Correct a reference to “Appendix 1” of the 1958 Agreement to “Schedule 1”, and
6. Manage the transition to the new standard reference test tyres (SRTTs)
   19.5 and 22.5 siped

Proposal to reinsert requirements for the classification of tyres of class C1 that were erroneously omitted in the amendments to para. 6.4. introduced via Supplement 1 and to align the wording with UN R30, to correct a reference to “Appendix 1” that should read “Schedule 1”, and to delete the field for “Extension No.” in the Communication form since the extension is already integral to the Approval Number.

Proposal to delete the term “Supplier of the tread used for retreading process”, to delete “material manufacturer” in favor of “material supplier”, to simplify the list of tyres classified as a tyre for use in severe snow conditions and/or as traction tyre, to introduce a paragraph clarifying that the supplier of tread material dedicated to the retreading of tyres categorized as special use tyres shall provide to the retreader the “void to fill ratio” pertinent to such tread material, to correct a reference to “Appendix 2” to refer to “Schedule 1” of the 1958 Agreement, to delete the field for “Extension No.” in the Communication form since the extension is already in the Approval number, and to align wording with UN R54.