Proposal to amend para. 2.1. to define “appropriate adaptor” as specified by the CHSS manufacturer and clarify container valve and end plug components, amend paras. 5.1.1., 5.1.2., 5.2., 9.2.1., 9.2.3.2. and Annex 3 para. 2.1. to specify that connections between supply lines for additional TPRDs and appropriate adaptors meet test requirements and are within scope, delete “hydraulic” in para. 9.2.1. to permit gas as test option, and amend Annex 3 para. 5.1. to remove reference to appropriate adaptors for fire testing.

Report on the status of deliverables to 79th GRSP session. Expected deliverables include working documents for transposition of optional part of GTR13 on liquified hydrogen (December 2025), updating ISO 17268-1:2025 reference for receptacle geometry (December 2025), and incorporating periodic inspection requirements into UN Regulation No. 134 (May 2026, WP.29-2026-56e). Additional deliverables include recommendations for IWG GTR 13 Phase 3 and way forward for material compatibility requirements (July 2026). TF-H2 also recommended clarifications to UN-R 134/03 regarding ‘appropriate adaptor’ definition and changes to related paragraphs, with informal document due December 2026.

Proposal to amend Annex 3 para. 5.1. to specify that the CHSS test article shall include the container and primary closure devices such as shut-off valve(s), check valve(s), and TPRD required to isolate the system, container attachments including gas housings or barriers that could impede TPRD response, as well as supply lines for additional TPRDs through appropriate adaptors, and vent lines shall be connected to TPRDs to direct TPRD exhausts in a manner representative of the configuration in the vehicle.

The agenda includes continuation of supply line discussions, corrections to UN R134/03, clarifications needed in UN R134/03 with responses from test labs, next steps, and scheduling of next meetings.

Proposal to amend Annex 3 paragraph 5.1 regarding the CHSS test article. The modification adds supply lines for additional TPRDs through appropriate adaptors to the required test article components, and clarifies that vent lines shall be connected to TPRDs to direct TPRD exhausts in a manner representative of the configuration in the vehicle. The task force identified contradicting language in the regulation regarding supply lines for additional TPRDs and aims to correct this inconsistency.

Test agencies expressed concern about knowing the material and fitting configuration of adapters in advance of testing. One agency suggested adapter material should match the original valve material strength. Agencies agreed small diameter supply lines present no pressure and temperature issues but suggested mandating a one to two second hold at maximum pressure during cycles. Test agencies questioned whether adapters and TPRD plugs are considered part of the test and whether leakage constitutes failure. Components not covered by UN R134 should be tested per ISO 19887-1.

Proposal to amend Annex 3, table 3, column “Number of cycles,” first row, is amended to read “60 per cent of initial cycle life (11 000 cycles).” and Annex 3, table 4, column “Number of cycles,” first and second rows, is amended to read “20 per cent of initial cycle life (11 000 cycles).”

Proposal to extend UN R134 to vehicles of category X (excluding vehicles of category Y), add provisions for Periodic Technical Inspections, modify hydrogen concentration warning requirements for ADS features of type 2 to transmit logic signals to the ADS, and adjust test cycle specifications in Annex 3.

Proposal to introduce provisions for periodic technical inspections.

Proposal to clarify that the number of cycles for initial pressure cycle life in the testing procedure in Annex 3 is 11,000 cycles.

Proposal to amend UN R134 to account for vehicles of category X and Y without driver and manual driving controls. The Regulation is extended to vehicles equipped with an Automated Driving System. New definitions for ADS feature of type 1 and type 2 are inserted. Modifications address hydrogen concentration warnings, tell-tale signals to driver or ADS, and test procedures in Annex 5. References to the Consolidated Resolution on the Construction of Vehicles are updated.

Draft proposal to introduce provisions for periodical technical inspections (patterned on such provisions in UN R110.

Proposal to introduce provisions for periodical technical inspections (patterned after similar provisions in UN R110).

Proposal to amend UN R134 to account for vehicles of category X and Y equipped with an Automated Driving System. The Regulation, originally drafted for vehicles with driver and manual driving controls, is extended to vehicles without driver and without manual driving controls inside the vehicle. Provisions related to driver and manual driving controls shall not apply if not already covered by the amendment. New definitions for ADS feature of type 1 and type 2 are inserted. Modifications are made to hydrogen concentration warning requirements, tell-tale signal provisions, and test procedures in Annex 5.

Proposal to transpose Phase 2 amendments to GTR 13 into UN R134.

Proposal to update add a reference to ISO 17268-1:2025.

Correction to an error in paragraph 5.2. of the original proposal.

Proposed modifications to ECE/TRANS/WP.29/GRSP/2025/7

Proposal to update of ISO standard referred in this Regulation as alternatives

The task force works on the improvement of UN Regulation no. 134 and a potential new UN Regulation on liquefied hydrogen

Procedural request for authorisation to introduce provisions for supply lines between compressed hydrogen storage systems (CHSS) and their thermally activated pressure relief devices (TPRD) based on the outcomes from the transposition of GTR-Phase 2 (Amendment 1) transposition into UN R134.

This proposal is to correct the clerical error found during transposing amendment 1 to GTR 13, Phase 2 (GTR13-PH2) into the Regulation

Draft proposal to update the references and application of ISO 17268 (Gaseous hydrogen land vehicle refuelling connection devices).

Proposal to align UN R134 with Amendment 1 to GTR 13.

Proposal to transpose Phase 2 amendments to GTR 13 into UN R134.

Proposal to transpose the Phase 2 amendments to GTR 13 into UN R134.

Proposal from the task force on the Transposition of GTR 13-Phase 2 into UN R134 to align the UN Regulation with Amendment 1 to GTR 13, amending document GRSP/2024/27.

GTR 13-Phase 2 transposition into UN R134.

Proposal from the task force on the Transposition of GTR 13-Phase 2 into UN R134 to align the UN Regulation with GTR 13 Amendment 1.

Proposal from the task force on the Transposition of GTR 13-Phase 2 into UN R134 to align the UN Regulation with Amendment 1 to GTR 13.

Transposition of GTR 13 Phase 2 provisions and other updates from the UN R134 Transposition task force.

Proposal to align UN R134 with the Phase 2 amendments to GTR 13, including provisions on remote TPRD and their supply lines and on containers with multiple interconnected chambers, and to make corrections.

Proposal to introduce a definition for “common space”, amend the communication form, and to introduce provisions for protection of intellectual property.

Proposal to amend document GRSP/2024/13 introducing provisions to align UN R134 with the Phase 2 amendments to GTR 13, including provisions on remote TPRD and their supply lines and on containers with multiple interconnected chambers, and to make corrections.

Original proposal updated to include comments from Japan.

Corrections identified during the work of the GRSP task force on the Transposition of GTR 13 Phase 2 amendments into UN R134.

Proposal to transpose the amendment 1 to UN GTR13, Phase 2 (GTR13-PH2).

Comments on the proposal to transpose Amendment 1 to UN GTR 13 into UN R134.

Proposal to transpose the Amendment 1 to UN GTR 13 (Phase 2 (GTR13-PH2)) into the UN R134 under the 1958 Agreement.

Proposal from the task force on the Transposition of GTR 13 Phase 2 amendments into UN R134.

Proposal to transpose Amendment 1 to UN GTR13, Phase 2 (GTR13-PH2) into UN R134.

Working draft amendments for transposition of GTR 13 Phase 2 amendments into the corresponding UN Regulation 134.