IWG RD-ASEP is developing a mandatory test to assess compliance with paragraph 6.2.3 of Regulation 51.04 main body, assuring vehicle noise emission at speed, load, or acceleration conditions other than Annex 3 condition is linked to vehicle physics with no noise emission test detection or defeat device schemes. After the 13th session in June 2026, the Editing Task Force created a consolidated R51.04 draft incorporating R51.03 Supplements up to Supplement 11, with mandatory random RD-ASEP testing for approval and revised control range. Submission targets include informal document first draft September 2026, second draft February 2027, and expected working document for adoption February 2028.
The Informal Working Group on Cyber Security and Software Updates will continue to consider how cyber security and software updates have a bearing on automotive safety and security, and whether any changes are necessary to the Regulations and guidance it has produced under WP.29. In particular, the IWG shall maintain official documents regarding UN R155, UN R156, and Recommendations on uniform provisions concerning cyber security and software updates; develop amendments to relevant documents; develop a proposal to amend UN Regulations under the responsibility of GRVA to record details of an RXSWIN where applicable which have been mandated by the 01 series of UN Regulation No. 156; develop proposals to amend UN Regulation No. 155 and its interpretation document to support application in national/regional frameworks for aspects such as multi-stage manufacturing; consider and develop deliverables regarding software updates after registration potentially creating a proposal for modification to the type approval numbering or a classification of update categories; support and review the application of cyber security and software update provisions across GRs notably for the Global Technical Regulation on Automated Driving Systems; and provide opportunities to participants to share knowledge, experience and ideas from implementation of national regulation/standards regarding CS/OTA as well as UN R155 and R156. The IWG will continue its activities until November 2029.
Three options are presented for the document package. Option 1 proposes a Working Document to be submitted by 22 July 2026, with non-agreed items excluded from both memorandum and Informal Document, and a new section created to record non-agreement items. Option 2 proposes a Working Document submitted by 22 July 2026 and an Informal Document drafted by interest parties including Japan for submission during the 95th GRPE in October, titled Interim Guidance for A-LCA to assist practitioners with CFP calculation. Option 3 proposes a Working Document submitted by 22 July 2026 and an Informal Document produced by A-LCA IWG for submission during the 95th GRPE in October, with the same title and aim.
Text as adopted by the Working Party on Brakes and Running Gear (GRRF) at 74th session to correct the Russian-version text.