The Working Party on Passive Safety held its seventy-seventh session from 5 to 9 May 2025 in Geneva. GRSP discussed amendments to multiple UN Regulations and Global Technical Regulations covering safety-belts, child restraint systems, pedestrian safety, hydrogen and fuel cell vehicles, and protective helmets. GRSP adopted proposals for amendments to UN R 16, UN R 100, UN R 127, UN R 129, UN R 134, UN R 173, UN R 174, and Mutual Resolution No. 1, which were submitted to WP.29 for November 2025 consideration. The working party also addressed electrically activated door opening, automated vehicles, and child protection topics, scheduling its next session for December 2025.

Proposal to remove the prohibition on use the Unique Identifier per the WP.29 decision to change the default application of the UI from a requirement (requiring prohibition in cases where UI does not apply) to a permission (requiring an affirmative statement that UI may be used under a Regulation).

Proposal to remove the prohibition on use the Unique Identifier per the WP.29 decision to change the default application of the UI from a requirement (requiring prohibition in cases where UI does not apply) to a permission (requiring an affirmative statement that UI may be used under a Regulation).

Proposal to remove the prohibition on use the Unique Identifier per the WP.29 decision to change the default application of the UI from a requirement (requiring prohibition in cases where UI does not apply) to a permission (requiring an affirmative statement that UI may be used under a Regulation).

Proposal to remove the prohibition on use the Unique Identifier per the WP.29 decision to change the default application of the UI from a requirement (requiring prohibition in cases where UI does not apply) to a permission (requiring an affirmative statement that UI may be used under a Regulation).

Proposal to remove the prohibition on use the Unique Identifier per the WP.29 decision to change the default application of the UI from a requirement (requiring prohibition in cases where UI does not apply) to a permission (requiring an affirmative statement that UI may be used under a Regulation).

Proposal to remove the prohibition on use the Unique Identifier per the WP.29 decision to change the default application of the UI from a requirement (requiring prohibition in cases where UI does not apply) to a permission (requiring an affirmative statement that UI may be used under a Regulation).

Proposal to remove the prohibition on use the Unique Identifier per the WP.29 decision to change the default application of the UI from a requirement (requiring prohibition in cases where UI does not apply) to a permission (requiring an affirmative statement that UI may be used under a Regulation).

Proposal to remove the prohibition on use the Unique Identifier per the WP.29 decision to change the default application of the UI from a requirement (requiring prohibition in cases where UI does not apply) to a permission (requiring an affirmative statement that UI may be used under a Regulation).

Proposal to remove the prohibition on use the Unique Identifier per the WP.29 decision to change the default application of the UI from a requirement (requiring prohibition in cases where UI does not apply) to a permission (requiring an affirmative statement that UI may be used under a Regulation).

Proposal to remove the prohibition on use the Unique Identifier per the WP.29 decision to change the default application of the UI from a requirement (requiring prohibition in cases where UI does not apply) to a permission (requiring an affirmative statement that UI may be used under a Regulation).

Proposal to correct para. 6.2.5.1. (seat inertia forces) to specify application of UN R14 (not “this Regulation” as erroneously copied) for the anchorage load tests.

Proposal to correct para. 6.2.5.1. (seat inertia forces) to specify application of UN R14 (not “this Regulation” as erroneously copied) for the anchorage load tests.

Proposal to correct an editorial error in paras. 2.4., 5.2.3.1., 5.5.1., 5.6.2.4., and 5.6.2.5. The term “master control switch” should read “vehicle master control switch”.

The objective is retaining children during rollovers or frontal impacts in the seat. This proposal offers a solution for Child Restraint Systems for bus fleet equipped with 2-point belts.

Introduces an explanation to the background of the procedures to test
vehicle types including DPPS

Information to serve as guidance for Technical Services and Type Approval Authorities

Proposal also applies to Supplement 2 to the 11 series of amendments and Supplement 1 to 12 series of amendments. The proposal makes corrections to the cross-references in part 6.

This proposal removes rebound head contact from the head acceleration requirement for all CRS.

Proposal to specify a target-oriented quasi-static certification of the upper legform impactor for the upper legform to bumper test, as described in Chapter 7 of the GTR.

Proposal to facilitate a target-orientated quasistatic certification of the upper legform impactor for the upper legform to bumper test, as described in Annex 5

Guidelines for the seats of express buses that can be reclined to a fully flat position (“full-flat seats”)

How could greater diversity in terms of representation of crashes and occupants be implemented in concerned crash safety regulations?

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

Proposal to allow the use of talcum for the dust resistance test as an alternative to dry quartz

Proposal ro clarify that the removal of an insert may also trigger additional tests with alternative dummy statures.

Proposal to improve the shoulder height requirements to properly take the dimensions of premature newborns into account

Presentation on creation of ISOFIX. There is interest from several specialists on Child Restraint Safety, CRS manufacturers and Consumer Organisations to add a 3rd fixed point.

Question remains, what if the ECRS is permanently or temporarily connected, on what basis can compliance with (the technical provisions of) UN R10 be required ?

Proposal applies to Supplements 3 to the 04 series of amendments. Proposal to clarify the scope of data from tests to the windscreen that must be provided for the purpose of type approval.

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

Presentation on the REGAM project
objectives :
• Determine the most injured body segments (frequency and severity) and identify representative accident scenarios associated with these injuries.
• Design robust (repeatable) virtual and physical tools, capable of assessing the level of protection provided by airbags

Proposal to correct inconsistencies following the amendment for vehicles of category O

Proposal to correct inconsistencies following the amendment for vehicles of category O

Proposal also for a corrigendum 1 to the 04 series of amendments and a
corrigendum 1 to the 5 series of amendments

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

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.

Proposal to amend UN R134 regarding hydrogen and fuel cell vehicles. The amendment clarifies requirements for supply lines serving additional thermally activated pressure relief devices (TPRDs) on compressed hydrogen storage systems. It specifies that supply lines must be constructed from metallic materials, demonstrate mechanical integrity through qualification tests excluding drop tests, and establishes handling procedures to prevent damage. The proposal also defines container attachments and refines test procedures for burst pressure, drop impact, permeation, and localized leak testing.

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