List of decisions taken during the GRVA session in Troy, Michigan (USA) for ratification during the formal GRVA session on 25 June 2024 in Geneva.

Proposal to facilitate a consistent approach across all Contracting Parties for Emergency Lane Keeping Systems (ELKS) covering vehicles of category M1 and N1. Currently the European Union mandates ELKS through EU Regulation 2021/646. This document proposes to align UN R130 with the EU regulation.

Proposal for amendments to the proposal to permit the use of a positive lock type system as an alternative to a friction type parking brake system.

Proposal to amend the proposal to permit the use of a positive lock type system as an alternative to a friction type parking braking system.

Proposal to clarify provisions concerning the type-IIA test and the test mass of vehicles authorized to tow trailer(s).

Proposal to clarify the need to apply, when relevant, the Type II test as required by Annex 4 under paragraph 1.8.2.5 (b) in Annex 15 for alternative brake lining purposes.

Proposal to keep a reliable test of heavy-duty vehicle brakes in PTI regardless of technology without creating new obligations to vehicle owners or managers, to ensure braking efficiency is subject to PTI test, and to read only proposal with no cybersecurity threats. Reference braking forces shall be declared at type approval per axle and made available for roadworthiness activities. Wheel brake demand values shall be available live on the vehicle. Either a digital procedure reading wheel brake demand or actuator values through OBD using universal diagnostic tools, or an analogic procedure measuring voltage or power supplied to brake actuators at manufacturer-designated points, shall be used to assess braking forces against reference values using current roller brake testers.

Consolidated amendment of the ADS guidelines and recommendations, integrating the proposals in GRVA-19-12 and GRVA-19-13.

Proposal to allow periodical technical inspection testing and verification of heavy-duty braking systems without burdening the vehicle
owners/managers.

Proposal to restore a footnote omitted during the preparation of the document.

Proposal to introduce a mapping of requirements and references to ISO 24089:2023 (“Road vehicles–Software update engineering”) where such referencing could aid the understanding and/or implementation of UN R156 requirements.

Proposal to introduce provisions for using virtual testing as an alternative to physical tests.

Proposal to introduce provisions for using virtual testing as an alternative to physical tests in UN R152.

Proposal to introduce provisions for using virtual testing as an alternative to physical tests in UN R152.

Proposal to enable use of virtual testing methodology as alternative methodology to the physical tests.