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GRVA · 26th sessionGeneva, 14–18 September 2026

GRVA 26th session

By RegVaultSource: official report ECE/TRANS/WP.29/GRVA/26 of 4 November 2026, and the session documents
Key dates

What happens next

  1. 17–20 Nov 2026
    WP.29, 200th sessionWP.29 votes on the 01 series of UN R178. WP.29 gets the ADS guidance document for information.UN R178
  2. End of Nov 2026
    GRVA workshop on automated parkingGRVA will confirm the date.
  3. Early Dec 2026
    GRVA discussion on automated shuttlesGRVA will confirm the date.
  4. Jan 2027
    GRVA 27th sessionGRVA elects a new Chair and discusses the open items again.
  5. Mar 2027
    WP.29, 201st sessionWP.29 votes on the amendments below. WP.29 can also adopt the ADS guidance document.UN R13UN R13-HUN R79UN R90UN R155UN R156UN R157UN R171
  6. 2027
    GRVA 28th session, in ChinaWP.29 must confirm the arrangements.
  7. Nov 2028
    End of the workshops on ADS implementation
  8. Jan 2029
    ADS phase 2 group: draft amendments dueFor UN R185 and UN GTR No. 26.

A supplement starts to apply after the UN Secretary-General notifies it and the time limit of the 1958 Agreement ends. RegVault adds the date to each regulation page when the notification is available.

Decisions

To the WP.29 vote

GRVA sent these texts to WP.29. Select a regulation to see its versions on RegVault.

UN R178Emergency Lane Keeping Systems

GRVA confirmed the 01 series. The year in transitional paragraph 14.1.2 changed from 2028 to 2030.

GRVA examined the advance copy and removed the square brackets. GRVA first agreed this text at its 25th session.

WP.29 vote · Nov 202601 series
UN R155Cyber security and cyber security management system

One Approval Authority issues the vehicle type approval and the Certificate of Compliance for the Cyber Security Management System.

New paragraphs 5.1.5 and 5.1.5.1. An Approval Authority can use the certificate of a different Approval Authority only with an agreed arrangement. The granting Approval Authority stays responsible for all aspects.

WP.29 vote · Mar 2027Supplement 4
UN R156Software update and software update management system

The same rule applies to the Certificate of Compliance for the Software Update Management System.

New paragraphs 5.4 and 5.4.1 use the same words as UN R155.

WP.29 vote · Mar 2027Supplement 2 to the original version, Supplement 1 to the 01 series
UN R155Cyber security and cyber security management system

Some equipment that a manufacturer installs after approval does not need a new risk assessment.

New paragraphs 8.2 and 8.3 apply to two cases. The first case is electrical or electronic equipment on an approved vehicle type. The second case is standard domestic or industrial equipment with a power connection only. The manufacturer must justify each listed condition.

WP.29 vote · Mar 2027Supplement 4
UN R157Automated Lane Keeping Systems

Approvals for other countries: the granting Approval Authority informs those countries at the latest 30 days before approval.

For each territory, the manufacturer gives three items. These are a summary of the traffic-rule assessment, a summary of the territory tests and one contact point. The manufacturer must also show at least every three years that the safety management system complies, as in UN R171.

WP.29 vote · Mar 2027Supplement 8 to the original version, Supplement 7 to the 01 series
UN R171Driver Control Assistance Systems

The manufacturer shows at least every three years that the safety management system complies.

Annex 3 paragraph 3.5.1 of the original version and the 01 series now has the text of the 02 series. The United Kingdom said that the rule applies at an extension of approval.

WP.29 vote · Mar 2027Supplement 5 to the original version, Supplement 3 to the 01 series
UN R79Steering equipment

The maximum range for Remote Control Parking (RCP) increases from 6 m to 10 m, or 15 m with a direct line of sight.

Paragraph 5.6.1.2.7 gives the range. New paragraph 5.6.1.1.4.1 gives an off-road exemption for Automatically Commanded Steering Functions (ACSF) of Category A. Japan asked for more accident data on RCP.

WP.29 vote · Mar 2027Part of Supplements 18, 13 and 2 to the 03, 04 and 05 series
UN R79Steering equipment

Risk Mitigation Function (RMF): the activation of the hazard warning lights starts the intervention.

Paragraph 5.1.6.3.4 and Annex 8 paragraphs 3.6.1 and 3.6.2 change. In the tests, the system must activate the hazard warning lights at the earliest five seconds after the warning signal. This check applies to the two lane-change test scenarios in Annex 8.

WP.29 vote · Mar 2027Part of Supplements 13 and 2 to the 04 and 05 series
UN R13-HBraking of passenger cars

The fault analysis of the anti-lock braking system must include incorrect wheel-speed data, for example after a wheel or tyre detaches.

New Annex 6 paragraph 4.5 gives this rule. Annex 8 paragraphs 3.4.1 and 3.4.4 now describe the assessment by the Technical Service. A fatal accident in the United Kingdom caused the proposal. GRVA adopted a narrower text from the CLEPA and OICA alternative. GRVA will also examine if UN R13 has the same problem.

WP.29 vote · Mar 2027Supplement 3 to the 02 series
UN R13Heavy vehicle braking

Trailer roll-away: a new performance option for the automatic brake.

Annex 8 paragraph 2.8 gets option (c). The service brakes and the spring brakes together must hold the laden trailer stationary at all times when the reserve pressure decreases. This option gives more design freedom to hold a trailer on an 18 per cent slope.

WP.29 vote · Mar 2027Supplements 10, 8, 5 and 4 to the 12, 13, 14 and 15 series
UN R90Replacement braking parts

GRVA removed an old sentence about burnishing from Annex 3 paragraph 1.1.1.

Supplement 9 deleted this sentence, but Revisions 2 and 3 kept it. This caused different interpretations. The bedding procedure in paragraph 1.1.2 applies.

WP.29 vote · Mar 2027Supplement 15 to the 01 and 02 series
UN R185Automated Driving Systems, with UN GTR No. 26

The Guidance and Interpretation Document for Automated Driving Systems (ADS) goes to WP.29.

This document gives a common interpretation of UN R185 and UN GTR No. 26. It follows the structure of the two texts. The workshops closed approximately 60 change requests. The document states that it adds no new requirements.

WP.29 · Nov 2026, Mar 2027Information in November, adoption in March
UN R155Interpretation Document

The Interpretation Document for UN R155 gets a new Part C about transformed vehicles.

Part C covers equipment from a later-stage manufacturer, connection risks and the necessary evidence. GRVA removed a paragraph about certificates for transformers. A new text for that paragraph is due at the GRVA 27th session.

WP.29 · Mar 2027Interpretation Document

Adopted by GRVA

ADS

Phase 2 of the Informal Working Group on Automated Driving Systems.

The group examines UN R185 and UN GTR No. 26. It also continues the work on the Data Storage System for Automated Driving (DSSAD). The group must give draft amendments at the latest at the January 2029 session.

AdoptedTerms of Reference
ADS

Workshops on the implementation of UN R185 and UN GTR No. 26, until November 2028.

Approval Authorities, Technical Services and industry can attend. The workshops share interpretations and best practice. They can also hold mock audits. The workshops will discuss if licensing is in scope.

AdoptedTerms of Reference
ADS

Task Force on the Exchange of Scenario-Relevant Information (ESRI).

The task force shares national road and traffic data and the lessons from investigations. It does not write scenarios for regulations.

AdoptedTerms of Reference
UN R155, R156

The Informal Working Group on Cyber Security and Software Updates continues until November 2029.

New tasks include software identification in GRVA regulations, multi-stage vehicles and software updates after registration.

AdoptedMandate until November 2029
GRVA

Programme of work for 2027.

The secretariat sends it to the WP.29 Secretary for the WP.29 programme of work for 2027.

AdoptedProgramme of work

For the next session (January 2027)

13 UN Regulations

Software identification (RxSWIN) and software update provisions in GRVA regulations.

The changes from the session remove UN R155 from the package. They also limit the R156SWIN. The secretariat will give the text an official symbol for the GRVA 27th session.

GRVA 27th sessionOfficial document to follow
UN R152Advanced Emergency Braking System for M1 and N1

Supplement 7 to the 02 series: the peak braking coefficient is a minimum value.

GRVA kept the document on the agenda. The Informal Working Group on AEBS plans a draft for 2028 that includes pedestrians at night.

GRVA 27th sessionKept on the agenda
UN R79Steering equipment

Use of the direction indicators for ACSF of Category C.

The Republic of Korea gave this document. GRVA will continue the discussion as necessary.

GRVA 27th sessionAs necessary
All GRVA regulations

Obligations after “production definitively discontinued”.

Germany asks about life-cycle obligations, for example post-deployment safety, when a manufacturer leaves the market.

GRVA 27th sessionInformal document

Withdrawn

UN R79Steering equipment

The proposal from France on test methods and tools for the RMF.

A market surveillance case caused the proposal. France withdrew it after the comments from OICA. GRVA adopted the alternative from OICA instead.

Withdrawn
Four decisions in detail

The effect in practice

UN R155 · UN R156

One Approval Authority for the vehicle type approval and the Certificate of Compliance

At this time, a manufacturer can get the Certificate of Compliance for its management system from one Approval Authority. It can get the vehicle type approval from a different Approval Authority. Five countries want to stop this after a case in Germany.

The adopted text requires one Approval Authority for both. An Approval Authority can use the certificate of a different Approval Authority only with an agreed arrangement. The granting Approval Authority keeps full responsibility under Article 2(2) of the 1958 Agreement.

OICA, CLEPA and CLCCR expect double approvals of one management system. Each approval needs renewal every three years. The industry proposed a change to the 1958 Agreement (GRVA-26-21). GRVA chose the arrangement method.

Action now: Make a list of each vehicle type with a certificate from a different Approval Authority. Ask your Approval Authorities if they will make an arrangement.
At this time, Approval Authority A can issue the vehicle type approval and Approval Authority B can issue the Certificate of Compliance. Under the adopted rule, Approval Authority A issues both. Approval Authority A can use the certificate of Approval Authority B only with an arrangement.AT THIS TIMEApproval Authority Avehicle type approvalApproval Authority BCertificate of ComplianceADOPTED RULEApproval Authority Avehicle type approval and Certificate of ComplianceEXCEPTIONApproval Authority AApproval Authority BarrangementA uses the certificate of B. A keeps full responsibility.

UN R155 paragraphs 5.1.5 and 5.1.5.1. UN R156 paragraphs 5.4 and 5.4.1. Adopted text: report Annex VII. Industry position: GRVA-26-20.

UN R79

Remote Control Parking: from 6 m to 10 m, or 15 m with a direct line of sight

OICA asked for a longer range. Radio ranging is not precise, so a 6 m limit gives a shorter usable range. With long vehicles, the driver cannot easily monitor the manoeuvre. During the session, the value changed from 15 m to 12 m and then to 10 m. The 15 m extension needs a direct line of sight between the remote-control device and the vehicle.

  • Paragraph 5.6.1.2.7: The maximum RCP range is 10 m. The range can be 15 m with a direct line of sight.
  • Paragraph 5.6.1.1.4.1: ACSF of Category A can be exempt from paragraph 5.6.1.1.4 off the road. The vehicle must not be on a public road, a public car park or a pedestrian area. The speed limit is 5 km/h (+1 km/h). The driver must start the function, sit in the driver's seat and wear the safety belt.
Action now: Include the range limits and the line-of-sight check in the RCP design. Japan asked for more accident data.
Maximum Remote Control Parking range: 6 m at this time, 10 m in the adopted text, 15 m with a direct line of sight.vehicle6 m at this time10 m adopted15 m with a direct line of sight

The drawing is to scale. The value in the session: 6 → 15 → 12 → 10 m (GRVA/2026/34, GRVA-26-30, GRVA-26-38/Rev.1).

UN R157

Approvals of Automated Lane Keeping Systems for other countries

An Approval Authority can approve an ALKS that also operates in other countries. The adopted text makes the granting Approval Authority inform the other countries before approval. The manufacturer does not send an early notification. OICA and CLEPA asked for less administrative work.

Action now: For each territory, prepare a summary of the traffic-rule assessment and of the tests in that territory. The receiving Approval Authority keeps this information confidential.
1
The manufacturer gives the information for each territoryA summary of the traffic-rule assessment, a summary of the territory tests and one contact point (paragraph 3.2.2).
2
The granting Approval Authority informs the receiving Approval AuthoritiesAt the latest 30 days before approval. The package includes each significant interpretation (paragraph 4.8.1).
3
The receiving Approval Authorities can commentWithin 30 days. A dispute needs a detailed justification (paragraph 4.8.2).
4
The granting Approval Authority grants the approvalIt makes the decision and stays responsible. Disputes follow Article 10 and Schedule 6 of the 1958 Agreement (paragraphs 4.8.3 to 4.8.5).

Adopted text: ECE/TRANS/WP.29/GRVA/2026/26 as amended by GRVA-26-16 (report Annex V).

UN R185 · UN GTR No. 26

Automated Driving Systems: the next steps after the new regulations

WP.29 adopted the regulations on Automated Driving Systems in June 2026. At its 26th session, GRVA started three tasks for the next phase. These are a guidance document, a working group that keeps the texts current, and workshops for common interpretations.

  • The Guidance and Interpretation Document follows the structure of UN R185 and UN GTR No. 26. It states that it adds no new requirements.
  • The workshops on implementation can hold mock audits. They continue until November 2028.
  • The phase 2 working group continues the work on DSSAD.
Action now: Compare your UN R185 safety case with the Guidance and Interpretation Document before the vote in March 2027.
Work plan for Automated Driving Systems: the Guidance and Interpretation Document goes to WP.29 in November 2026 and March 2027. The workshops on ADS implementation continue until November 2028. The Informal Working Group on ADS, phase 2, gives draft amendments by January 2029.2026202720282029Guidance and Interpretation DocumentWP.29: Nov 2026, Mar 2027Workshops on ADS implementationuntil Nov 2028Informal Working Group on ADS, phase 2drafts by Jan 2029

Report paragraphs 13–18 and Annexes III–IV. Each bar starts at the GRVA 26th session (September 2026).

Watchlist

Topics with no decision yet.

Automated parkingChina proposes a task force on parking. GRVA plans a workshop for the end of November 2026 (paragraphs 27 to 35).
Automated shuttlesFrance asks how to categorize automated shuttles. GRVA plans a discussion for early December 2026 (paragraphs 24 and 25).
Electronic Stability Control always on (UN R140)FIA asks why a driver can still deactivate the Electronic Stability Control. There is no proposal at this time (GRVA-26-29, paragraph 62).
Access to vehicle dataFIA writes a paper on on-board authentication and authorization for WP.29 in November 2026 (GRVA-26-10, paragraphs 43 and 44).
Artificial intelligence in vehiclesThe Informal Working Group on AI plans a formal reference document for 2027 (GRVA-26-07, paragraph 9).
e-TrailersThe industry works on trailers of Categories O3 and O4, and then O2. The last workshop was on 16 October 2026 (GRVA-26-25, paragraphs 63 and 64).
A new Chair for GRVAMr R. Damm (Germany) does not stand for re-election after six years. GRVA elects a new Chair at its 27th session. The Vice-Chairs for 2027 are from China, Japan and the United States of America (paragraphs 5 and 75 to 77).
GRVA 28th session in ChinaChina invited GRVA to hold its 28th session in China. GRVA asks WP.29 about the arrangements in November 2026 (paragraph 79).
Sources
  • Report of GRVA on its twenty-sixth session, ECE/TRANS/WP.29/GRVA/26, 4 November 2026. The paragraph and annex numbers in this brief refer to this report.
  • Provisional agenda ECE/TRANS/WP.29/GRVA/2026/23 and working documents ECE/TRANS/WP.29/GRVA/2026/24 to /38.
  • Informal documents GRVA-26-01 to GRVA-26-39. Annex I of the report gives the list.
  • Report of the twenty-fifth session, ECE/TRANS/WP.29/GRVA/25, for background.

See the changes in each version of these regulations.RegVault gives a change report for each version, from the official records.

Open change reports
This brief gives information only. It is not legal advice or type-approval advice.© RegVault. RegVault uses public UNECE documents.