Software identification and updates for vehicles no longer in production. UN R156 series 01 introduces mandatory RXSWIN for software updates after registration. RE3 Annex 7, UN R157, UN R171, and UN R185 define type approval rules post-production. Manufacturers may apply for new approvals to differentiate software for registered vehicles from new vehicles, covering type approval regulation updates or hardware changes. Duplication of tests shall be avoided where possible. National Type dates need not be respected for new approvals under the 1958 Agreement.

GRVA’s twenty-sixth session reviewed the Informal Working Group on Automated Driving Systems’ progress and adopted revised Terms of Reference for Phase II, establishing the Workshops on ADS implementation with Terms of Reference and Rules of Procedure. GRVA adopted amendments to UN R157 addressing Safety Management System provisions and clarifying requirements for ALKS activation across multiple territories, with supplements to the original version and 01 series of amendments. GRVA adopted amendments to UN R155 and UN R156 concerning software identification and software updates provisions, approved Supplement 4 to UN R155 clarifying its scope, and adopted amendments addressing Approval Authority arrangements for Certificates of Conformity. GRVA adopted amendments to UN R171 aligning continued compliance provisions with UN R157, adopted amendments to UN R79 regarding steering equipment and remote-control parking, adopted amendments to UN R13 and UN R13-H concerning trailer braking systems, and adopted amendments to UN R90 addressing replacement braking parts. GRVA established the Task Force on Exchange of Scenario-Relevant Information with Terms of Reference and Rules of Procedure, discussed automated vehicle categorization and automated parking systems, and reviewed ongoing work on Artificial Intelligence in vehicles, cyber security, data protection, advanced driver assistance systems, and motorcycle braking.

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.

GRVA will continue to establish and maintain the United Nations regulatory framework for Automated Driving Systems, including UN R185 and GTR 26. GRVA will continue its work on cyber security, over-the-air software updates, and the Data Storage System for Automated Driving. GRVA will focus on implementation of ADS and development of provisions for the Exchange of Scenario-Relevant Information. GRVA will further elaborate requirements for Advanced Driver Assistance Systems, building on UN R79 and UN R171, and for Automated Emergency Braking Systems, building on UN R131 and UN R152.

Proposal to amend GRVA/2026/34 proposing to amend para. 5.6.1.2.7. to modify the specified maximum RCP operating range from 6 m to 10 m, with provision to extend to a maximum of 15 m if direct line of sight between the remote-control device and the vehicle is ensured. The justification notes that RCP systems with extended ranges are already offered in large markets without regulatory limits, that radio wave-based ranging requires safety margins reducing effective usable range, and that increased range would reduce blind areas behind vehicles and allow drivers to better monitor surroundings while manoeuvring, reducing risks and increasing overall safety.

Document outlining GRVA’s priority activities for 2027 based on ECE/TRANS/WP.29/2026/1. GRVA will continue establishing and maintaining the United Nations regulatory framework for Automated Driving Systems, including UN R185 and GTR 26, with work on cyber security, over-the-air software updates, and the Data Storage System for Automated Driving. GRVA will focus on ADS implementation, provisions for Exchange of Scenario-Relevant Information, and elaboration of requirements for Advanced Driver Assistance Systems and Automated Emergency Braking Systems building on UN R79, 171, 131, and 152.

Proposal to clarify the provisions
applicable to the type-approval of Risk Mitigation Functions (RMF): Amend para. 5.1.6.3.4. to clarify that the signal to activate hazard warning lights is generated with the start of the intervention and is deemed to start the intervention, amend Annex 8 para. 3.6.1. to specify that hazard warning lights are activated at the earliest five seconds after the warning signal, and amend Annex 8 para. 3.6.2. (Scenarios A and B) to specify the same timing requirement for hazard warning lights activation in tests for RMF bringing the vehicle to a safe stop outside its own lane of travel. The proposal clarifies that the starting time of RMF operation comes with the driver warning and that five seconds should be measured until the hazard warning lights come.

Proposal to amend para. 5.6.1.2.7. to extend the maximum remote control parking (RCP) operating range to a maximum of 15 m if, prior to the operation, a visual message informing the operator of their responsibility is presented to and acknowledged by the operator. The justification notes that RCP systems with ranges exceeding 6 m are already offered in large markets such as Canada and the United States of America, and that such extended-range systems have been used in the field for several years without negative feedback or identified safety threats.

Proposal to insert a new sub-paragraph 5.6.1.1.4.1 to exempt ACSF Category A functions from the requirements of paragraph 5.6.1.1.4, provided that the functions are intended solely to assist the driver in regaining vehicle motion in limited traction conditions in off-road environments up to 5 km/h (+1 km/h tolerance), are activated following a deliberate action by the driver with the driver in the driver’s seat and safety belt fastened, and allow the driver to override or deactivate the function at any time, with the manufacturer to describe system behaviour when operating conditions are no longer met.

Proposal to insert a new para. 5.1.12. requiring that whenever an assessment of compliance to a requirement of this regulation is unachievable without reading internal signal(s) of an electronic system, the vehicle manufacturer shall provide instructions and tools to read signals on in-vehicle networks for the technical service to extract and interpret the signal(s), with this information appended to the test report.

Proposal to clarify para. 5.6.4.6.8.1.(e) of UN R79 to address how different direction indicator lever mechanisms comply with manual deactivation requirements for automated lane change systems. The regulation currently does not distinguish between full-turn methods, where the lever returns to neutral position, and half-turn methods, where activation of the opposite direction indicator or stalk activation in the opposite direction constitutes deactivation. Two options are presented: either add separate provisions for each method, or note that activation of opposite direction indicator lamps may constitute deactivation of the initiating signal.

Proposal to insert definitions for Software Identification Number, insert requirements for manufacturers to provide necessary information allowing the Technical Service to uniquely identify hardware and software configurations, insert provisions allowing vehicle manufacturers to apply for new approvals to differentiate software versions for registered versus new vehicles, amend production discontinuation provisions to clarify that cessation is not deemed definitive if the manufacturer intends to obtain subsequent extensions for software updates of vehicles already registered in the market, renumber and insert new items in approval communication annexes regarding software identification and software updates including RxSWIN, and insert provisions allowing vehicle manufacturers to obtain new approvals for software version differentiation across multiple UN Regulations (13, 13-H, 79, 89, 130, 131, 139, 140, 152, 155, 156, 157, 171, 175, and 178).

Proposal to amend para. 5.3.3.2. to clarify steering performance requirements in case of control transmission failure and amend para. 6.1.1. to permit testing outside the specified ambient temperature range of 0 °C to 45 °C at the manufacturer’s request and with Technical Service agreement, provided performance requirements are still met.

Proposal to amend para. 5.3.3.2. to clarify that in case of control transmission failure, excluding certain parts, steering with the performance laid down in para. 6. shall remain possible for the intact steering system, and amend para. 6.1.1. to permit testing above or below the specified ambient temperature of 0 °C to 45 °C at the manufacturer’s request and with Technical Service agreement, provided performance requirements are still met.

Proposal to amend para. 5.3.3.2. to clarify steering capability following control transmission failure, and amend para. 6.1.1. to permit testing outside the standard ambient temperature range of 0 °C to 45 °C at the manufacturer’s request and with Technical Service agreement, provided performance requirements are still met.

Proposal to amend GRVA/2026/27, which proposes amendments to UN R13, UN R13-H, UN R79, UN R89, UN R130, UN R131, UN R139, UN R140, UN R152, UN R156, UN R157, UN R171, UN R175, and UN R178:

• Throughout these regulations, amend references to the Consolidated Resolution on the Construction of Vehicles (R.E.3) as document ECE/TRANS/WP.29/78/Rev.8,
• insert new definitions for Software Identification Numbers referring to R.E.3 Annex 7 para. 2,
• amend requirements for software identification to require manufacturers provide necessary information allowing Technical Services to uniquely identify hardware and software configurations,
• insert new provisions allowing vehicle manufacturers to apply for new approvals differentiating software versions for vehicles already registered in the market from new vehicles,
• amend production discontinuation provisions to clarify production is not considered definitively discontinued if manufacturer intends to obtain subsequent extensions of approval for software updates of registered vehicles,
• insert new items in annexes regarding additional information on software identification and software updates including R_xSWIN identification, whether held on vehicle, how to read if not held on vehicle, and relevant parameters for vehicle identification.

Proposed changes to align RxSWIN provisions with the RxSWIN template adopted through WP.29-197-06, remove the proposed requirement to comply with UN R156/01 or later from R157 and R171, remove amendments to UN R155 as decided by the IWG CS/OTA, apply the RxSWIN amendments also to earlier series of amendments in R13, R13-H, R79, R131, R152, R157, and R171, update references to the latest version of R.E.3, ECE/TRANS/WP.29/78/Rev.8, in earlier series, and correct paragraph references and improve structure in R89, R139, R140, R155, R156, and R171.

GRVA held its twenty-fifth session on 23 June 2026 in Geneva, following consultations in Montreal from 18-22 June 2026. The working party endorsed status reports from informal working groups on Automated Driving Systems, cyber security and over-the-air updates, acceleration control for pedal error, advanced emergency braking systems, and event data recorder/data storage systems. GRVA adopted amendments to UN Regulations 79, 90, 152, 157, and 178, and amendments to documents on automated driving systems for submission to WP.29 and its administrative committees. GRVA established a task force on Exchange of Scenario-Relevant Information, extended the mandate of the Informal Working Group on Automated Driving Systems for three years, and agreed to pause activities of the Task Force on Advanced Driver Assistance Systems and install a task force for exchange on Automated Driving Systems implementation. GRVA noted various proposals on cyber security, data protection, connected vehicles, and advanced driver assistance systems for further consideration.

Session report of WP.29 (World Forum for Harmonization of Vehicle Regulations), its Administrative Committee of the 1958 Agreement (AC.1), Executive Committee of the 1998 Agreement (AC.3), and Administrative Committee of the 1997 Agreement (AC.4) held 23-26 June 2026 in Geneva. AC.1 voted on 92 amendments to existing UN Regulations, one corrigendum to UN Regulation No. 79, and three new UN Regulations (Nos. 184-186) on liquid hydrogen vehicle safety, automated driving systems, and tyre abrasion performance. AC.3 established UN GTR on automated driving systems and adopted corrigendum to UN GTR No. 9 and Amendment 2 to UN GTR No. 13. WP.29 extended mandates of several informal working groups and noted accession of Mongolia and Armenia to the 1958 and 1997 Agreements respectively.

Proposal to insert provisions on Software Identification Numbers and software updates across UN R13, R13-H, R79, R89, R130, R131, R152, R155, R156, R157, R171, R175, and R178 by adding definitions referencing Consolidated Resolution R.E.3 Annex 7 paragraph 2, requiring manufacturers to provide Technical Services with information on hardware and software influencing performance with test reports, permitting vehicle manufacturers to apply for new approvals differentiating software versions for registered vehicles from new vehicles where type approval regulations are updated or hardware changes occur in series production with test duplication avoided where possible, clarifying that production is not considered definitively discontinued if manufacturers obtain subsequent extensions for software updates of registered vehicles, renumbering and inserting new items in approval communication annexes for R13SWIN, R13-HSWIN, R79SWIN, R89SWIN, R130SWIN, R131SWIN, R152SWIN, R155SWIN, R157SWIN, R171SWIN, R175SWIN, and R178SWIN information including whether held on vehicle and relevant parameter identification lists, and amending R157 and R171 to align software update requirements with R156 technical specifications and transitional provisions.