The Task Force on Swappable Battery shall review WP.29 regulations and identify technical requirements necessary for swappable-battery vehicles intended for mass production, compile them into a list, define vehicle types for swappable-battery-compatible vehicles, identify applicable regulations, clarify the process for handling such vehicles and batteries as a special type of Vehicle Type Approval under WP.29, discuss treating batteries as independent type approval units for both swappable and in-vehicle batteries, coordinate activities with EVS Phase 3 scheduled to start in November 2026, cooperate with EVE IWG activities, and develop a guidance document to be proposed to WP.29 to initiate regulatory work. Terms of Reference will be finalized and proposed to GRPE in April 2027, and status of other items will be reported in October 2027.

Guidance document on interpreting “type of REESS” (Rechargeable Electrical Energy Storage System) as defined in paragraph 2.48. of UN Regulation No. 100. The document establishes that when judging whether differences are significant, the evaluation should be from the perspective of whether the difference has a substantial impact on the safety performance of the REESS as required by UN Regulation No. 100. It provides consideration on essential aspects including manufacturer’s trade name or mark, chemistry, capacity and physical dimensions of cells, number of cells and mode of connection, construction and materials of casing, and ancillary devices for physical support, thermal management and electronic control.

Proposal to:

• Delete entries for annexes 9A, 9B, 9E (including its appendix 1) and 9F from the table of contents and treat as reserved,
• Insert new para. 0.2. describing the supplement’s purpose to streamline contents by eliminating redundant requirements and test procedures,
• Delete and replace paras. 6.2. to 6.3.2.2., 6.5. to 6.5.3.1., 6.10. to 6.10.2.3., and 6.14. to 6.14.2. with reserved status,
• Add new sentences to paras. 6.6.2.2., 6.7.2.2., 6.8.2.2. and 6.9.2.2. making isolation resistance measurement not required if REESS is equipped with isolation resistance monitoring system,
• Amend para. 6.12.3. to clarify requirements for REESS other than open-type traction battery,
• Replace “function of characteristic” by “function or characteristic” in para. 6.15.3.1.,
• Add new sentence to Annex 9 appendix 2 para. 1. allowing SOC adjustment at different ambient temperature,
• Delete annexes 9A, 9B, 9E and treat as reserved,
• Amend Annex 9F para. 3.3. heading and delete first paragraph,
• Amend Annex 9G para. 3.1. (b) and delete sub-paragraphs,
• Amend Annex 9H paras. 3.2.1. through 3.2.4. (c),
• Delete Annex 9J and treat as reserved.

Minutes of the twelfth meeting of the IWG on EV/HFCV Retrofit Systems held 28 September 2026. The group adopted the provisional agenda and reviewed the work program, aiming to provide GRPE with a first draft of a future UN Regulation by 14–16 October 2026. The group focused on revising definitions in the draft UN Regulation, particularly EPRS definition, EPRS type, vehicle family, and installer provisions. Key unresolved issues include which components must remain identical within an approved type, alternative ways of grouping vehicles within a family, whether installer requirements should be included in the UN Regulation, and the scope regarding vehicles subject to UN Regulations Nos. 155 and 156.

Document presents technical challenges to defining retrofit kit types for electric conversion and approval processes. Identifies that retrofit kit type perimeter depends on the regulation considered, with different requirements across UN R10, R13, R100, R85, R138, WLTP, R79, R39, R51, R89, R121, and R122. Presents testing challenges at vehicle, component, and EPRS levels, noting that testing a kit type not installed on a vehicle is impossible to account for all impacts on the vehicle.

List of documents for the eightieth session of the Working Party on Passive Safety scheduled for Geneva, 7–11 December 2026. Documents include proposals for:

• Amendment 3 to UN GTR 1,
• A new UN Regulation for M₂ and M₃ vehicles to prevent children being left inside,
• A 05 series of amendments to UN R11,
• A 02 series of amendments to UN R21,
• Supplement 4 to the 06 series of amendments to UN R22,
• A 06 series of amendments to UN R129,
• Supplement 2 to the 03 series of amendments to UN R134,
• Supplement 03 to the 01 series of amendments to UN R145,
• Supplement 1 to the 01 series of amendments to UN R170,
• A 02 series of amendments to UN R173,
• A new UN Regulation for category N₁ vehicles regarding fuel system integrity and crash compatibility,
• Supplement 3 to the original series of amendments to UN R42,
• Supplement 5 to the 04 series of amendments to UN R127,
• Amendments to UN Regulations Nos. 11, 12, 14, 16, 17, 21, 94, 95, 100, 127, 134, 135, 137, 153, 173, 174 and 184.

Proposal to amend UN Regulations Nos. 11, 12, 14, 16, 17, 21, 94, 95, 100, 127, 134, 135, 137, 153, 173, 174 and 184 to incorporate provisions related to RXSWIN in accordance with revision 8 of the Consolidated Resolution on the Construction of Vehicles (R.E.3). The amendments insert provisions regarding Software Identification Number definitions, manufacturer information requirements for approval tests, vehicle approval applications for software version differentiation, production discontinuation rules for software updates, and additional information on software identification and updates. Amendments are to enter into force in early 2028.

Provisional agenda for GRSP’s eightieth session to be held 7–11 December 2026 in Geneva. The session will address UN Global Technical Regulations No. 1, 13, and 20; UN Regulations Nos. 11, 17, 21, 22, 95, 100, 127, 129, 134, 145, 170, 173, and 174; a new UN Regulation and authorization request for a GTR on children left in vehicles; collective amendments to UN Regulations affecting automated vehicles; Mutual Resolution No. 1; equitable occupant protection; and other business items including vehicle automation, software updates, airbags, child restraint systems, and bus protection.

Task Force EDO held an intermediate online Teams meeting on 18 June 2026. The agenda was adopted without amendments. Two informal documents had been submitted to the seventy-ninth session of GRSP. Authorization to amend GTR Nos. 1 and 14 would be submitted to November session of WP.29. Amendments to UN Regulation No. 11, UN Regulation No. 21 and GTR No. 1 would remain part of Phase 1, for consideration at December session of GRSP. The Task Force reviewed proposals concerning UN Regulation No. 100 and intuitiveness, concluding further discussion was necessary. Authorization request to amend GTRs would be submitted to November session of WP.29 by Germany and Republic of Korea. Next meeting: 1-3 September in Paris.

Supporting presentation for proposals to remove para. 6.2. and Annex 9A, remove para. 6.3. and Annex 9B, remove para. 6.5. and Annex 9E including Appendix 1, remove para. 6.10. and Annex 9J, exempt from isolation resistance measurements after each test, allow sequential execution of over-discharge and overcharge tests, remove standard cycle after each test, unify thermal event warning requirement by removing para. 6.14., and allow alternative conditions for ambient temperature for SOC adjustment. The document also proposes guidance on REESS type definition.

Proposal to provide guidance for interpretation of “Type of REESS” (Rechargeable Electrical Energy Storage System) as defined in UN R100 para. 2.48. The document establishes that differences in REESS should be evaluated from the perspective of substantial impact on safety performance. It describes key elements for assessing impact on safety within each essential aspect: manufacturer responsibility, cell chemistry/capacity/physical dimensions, cell number/connection/support, casing construction/materials/dimensions, and ancillary devices. The guidance provides examples of changes not causing or potentially causing significant differences, including production location changes, multi-sourcing of cells, and process improvements.

Proposal to streamline the Regulation by eliminating redundant requirements and their test procedures as well as to clarify the possible alternative methods to improve the efficiency of the tests: Delete paragraphs 6.2. and 6.3., delete paragraph 6.5., delete paragraph 6.10., reserve paragraphs 9A, 9B, and 9E, delete paragraph 6.14., amend paragraph 6.15. to add comprehensive thermal propagation verification procedures including risk management analysis alternatives, add paragraph 6.16. for REESS and vehicle communication compatibility, add new Part III (para. 7.) for approved REESS installation requirements, renumber existing paragraphs 8.–13. as paragraphs 8.–13. and add corresponding section numbering, amend scope provisions to clarify application to vehicles of categories M, N, and O with specified e-axle battery provisions, add vehicle category O definitions including “e-axle” and “trailer load compartment,” amend various paragraphs to reference vehicles of categories O₃ and O₄, amend protection requirements to include trailer load compartments, amend over-discharge and overcharge test procedures to permit sequential execution, amend isolation resistance measurement requirements to exempt measurement when isolation resistance monitoring systems are installed and confirmed functional, clarify SOC adjustment procedures to permit alternative ambient temperatures when highest SOC is achievable independently, add labelling requirements for vehicles of categories M₂/N₂ and M₃/N₃ in accordance with ISO 17840-4:2018, add provisions for Automated Driving System (ADS) features and warnings, add provisions for vehicles of category Y regarding mechanical integrity validation at component level, amend Annex 1 Part 2 to revise installation restriction references, add Annex 9K describing four thermal propagation trigger methods with four appendices, and add Annex 10 specifying label provisions for electric power train vehicles.

The Informal Working Group on EV/HFCV Retrofit Systems held its seventh meeting on 5th March 2026. The group adopted the provisional agenda, approved minutes of the previous meeting, and acknowledged ongoing activities under GRPE, GRSP and GRVA. Electrical safety review will continue once clarification regarding UN R100 is available. Cybersecurity discussions covered very old vehicles, older vehicles without cybersecurity provisions, and modern vehicles compliant with UN R155. Braking aspects and the structure of the draft UN Regulation were discussed, including vehicle versus system approval approaches and minimum and maximum vehicle age within the regulation’s scope.

Proposal to account for vehicles of categories X and Y, extend application to vehicles without driver and without manual driving controls, and address inconsistencies related to REESS provisions. The amendment introduces ADS feature types 1 and 2, modifies warning transmission requirements for ADSF-2, adjusts isolation resistance specifications, and exempts certain REESS requirements for category O and Y vehicles. Changes include updates to Annex 8 stopping conditions and Annex 9E terminology.

Proposal to correct inconsistencies in isolation resistance monitoring system requirements for vehicles of category O₃ and O₄ trailers to provide optical and/or audible warnings via CAN-Bus signal transmission. High voltage REESS isolation resistance requirement set at minimum 100 Ω/Volt or protection degree IPXXB fulfillment. Requirements do not apply to REESS solely installed on vehicles of category O or batteries used for recuperation.