Proposal to amend para. 6.2.2.3.8.1 (b) to change “a driving task relevant area” to “the driving task relevant area” and to expand the accompanying GID text to define the driving task relevant area as consisting of different zones including inside mirror, left outside mirror, right outside mirror, left window, right window, windscreen, and instrument cluster or instrument display, and to clarify that depending on the type of ADS feature and driving situation the user could be suitable to have looked at just one zone or more than one zone.

Proposal to remove explanation for para. 7.3.1.14. The document suggests differences in how ADSF-1 and ADSF-2 vehicles would handle fallbacks to a mitigated risk conditions that have not been fully explored by the ADS informal group. Rather than speculate, the preparatory discussions among IWG experts resulted in a recommendation to omit this explanation pending the next phase of work on the regulations.

Proposal to amend Paragraph 5.3.1.3 (GTR) / 7.3.1.3 (UNR) in Safety Case. The revision replaces “no new behaviours or traffic flows” with “no new behaviours or traffic flows density or dynamic element types” and adds “or traffic behaviour” to the text regarding traffic laws because ODD does not include a definition of traffic behaviour, making the original sentence factually incorrect.

The ADS regulations (GTR and UNR) include definitions for reporting thresholds based on EDR triggering. Time-series data recording for heavy vehicles under UN R169 requires triggers and trigger thresholds to record data in specified time periods, which may not immediately precede, follow, or coincide with crashes. Last Stop, Safety Systems, and Sudden Deceleration triggers are unreliable crash indications. Sudden Deceleration is too sensitive for storing time-series data over several months. Optional SRS or a new independent trigger alongside Detected Collision offers the only viable possibility for effective time-series data recording.

Proposal to amend explanation of para. 6.2.2.1.4. to clarify that ‘while’ refers to continuous presentation of information sufficient to enable a user to take over performance of the DDT such as through ambient lighting, tell-tales, or dashboard colour changes. The explanation notes that information on adapted performance is only presented if applicable.

Proposal to amend ADS-20-12 (consolidated guidance document). The ADS shall have strategies to detect and respond to instructions from road safety agents. For ADSF-1, this allows transfer of control to the fallback user. Manufacturers may use non-ADS strategies including remote intervention or permitting the road safety agent to drive. Examples of instructions include pull over, give way, stop after collision, move out of way, avoid specific road, and not overtake. Instructions may be issued via lights, sirens, audio messages, written signs, or light bar messages.

Proposal to revise the guidance on para. 6.1.2.3 of the draft UN Regulation on ADS regarding unreasonable disruption to traffic. The revision changes “prevent normal interaction” to “allow normal interaction” and “require other road users” to “may technically require other road users” to clarify that the requirement permits normal interaction with traffic, such as using on ramps, slowing for traffic lights, and waiting at unprotected turns, where other road users must adapt their speed, without violating the requirement.

Proposal to amend ECE/TRANS/WP.29/2026/137: replace “[ADS]”, “[XXX]”, and “[number of this Regulation]” with the UN Regulation number upon adoption throughout Contents, Appendices, and Annexes; amend para. 1.2. cross-reference to read “7.2.3.17.”; amend para. 6.2.2.3.8.1.(b) to specify gaze directed to “the” driving task relevant area; remove brackets around “7.4.” in para. 11.2.; add period after number in Annex 1 para. 5.1.; amend Annex 1 Appendix 1 paras. 1.4.5., 1.4.7., and renumber 1.4.12., 1.4.12.1., 1.4.12.2. as 1.4.11.5., 1.4.11.5.1., 1.4.11.5.2.; amend Annex 7 table 5 rows 1–2 column 7 to replace “minimal risk manoeuvre” with “fallback to a mitigated risk condition”; remove brackets in Annex 8 para. 5.3.1. and amend para. 5.3.2. table to insert “Mandatory” in row 1.

Proposal to amend WP.29/2026/139 to amend para. 4.2.2.3.8.1. subparagraph (b) to replace “a the driving task relevant area” with “the driving task relevant area”, amend para. 6.3.2.2.3. to replace “approval authority” with “assessment”, amend Annex 5 table 5 rows 1 and 2 column 7 to replace “minimal risk manoeuvre” with “fallback to a mitigated risk condition” and remove brackets around deceleration threshold from ⁴ m/s², remove brackets in Annex 6 para. 5.3.1., and amend Annex 6 para. 5.3.2. table to insert “Mandatory” in row 1 column 2 and remove brackets after the table.

The Informal Working Group on Automated Driving Systems identified topics for future consideration organized into four lists: items not addressed in original versions of the GTR/UNR; existing items requiring amendment or improvement; items relating to operational implementation; and other items. List 1 includes remote assistance, ODD description taxonomy, external human-machine interface provisions, and connectivity considerations. List 2 includes ADS to ADAS transitions, Data Storage Systems for Automated Driving, ADS deactivation, in-service monitoring and reporting, and safety case requirements. List 3 addresses interpretation document improvements, mutual recognition provisions review, system updates and thresholds, and practical implementation of in-service monitoring. List 4 includes text streamlining to remove duplication and improve clarity.

Since January 2026, the group accepted proposals ADS-20-15, ADS-20-16, and ADS-20-48/Rev.1 for minor amendments. Working documents WP.29/2026/139 and WP.29/2026/137 were submitted for WP.29’s 199th session. Two informal documents (ADS-20-59 and ADS-20-60) will amend these working documents. GRVA seeks a three-year mandate extension for the informal group to address identified future work items beyond June 2026.

This document is a draft Guidance and Interpretation Document (GID) for UN Global Technical Regulation and UN Regulation on Automated Driving Systems, based on GRVA/2026/3 as amended by GRVA-24-29 and WP.29-198-09. The GID provides explanatory text, guidance, and examples to support implementation of ADS requirements without introducing new obligations. It covers scope, definitions, application for approval, approval procedures, ADS performance requirements in nominal, critical, and failure situations, interactions between ADS and users, safety management systems, test environments including simulation credibility frameworks, safety case requirements, post-deployment safety monitoring with reportable occurrences, and compliance assessment procedures. The document clarifies terminology including operational states of ADS features, critical occurrences, driving situations, and mitigated risk conditions, and provides detailed guidance on ODD definition, safety case structure, confirmatory testing approaches, and in-service reporting templates with threshold definitions for critical occurrences.

The 20th ADS IWG and 17th GRVA Workshop on ADS convened in Bangkok from April 27 to May 1, 2026. OPIs consolidated draft text for the Guidance and Interpretation document (GID) on ADS, addressing DDT performance, application for approval, user interactions, SMS, ISMR, safety case, and assessment provisions. The GID would be submitted to GRVA in May and WP.29 in June as an informal document, then officially in September and November. Numerous amendment proposals were discussed, including clarifications on crash causation, priority vehicles, road safety agents, MRC requirements, remote assistance, and scenario testing. The next session in Brussels (July 14-17) aims to finalize the GID, with Phase 2 work items to be considered thereafter.

Proposal to add examples to the guidance on reporting noncompliance with DDT performance requirements under para. 6, specifying that failures include systematic or repeated deviations from DDT performance requirements defined under para. 6, non-compliance with respect to DDT performance requirements and requirements on interactions between the ADS and its user or other requirements under para. 6, and deviation from Remote Interaction/Intervention as described in the Safety case, with a note that some examples can reveal unreasonable risk to safety requiring only a single report noting this aspect.

Proposal to modify the explanation on performance issues constituting an unreasonable risk to safety by specifying that this occurrence should be understood as deviations, degradations, or performance limitations shown by an ADS feature that affect its ability to perform the DDT within the declared ODD, triggered by events that present an unreasonable risk to safety and/or are beyond expected variability or acceptable degradation, replace “may” with “might” in references to discrete failures and risk existence, replace “Violation of” with “Non-compliance with respect to the”, delete references to identified reduction in safety margins and exceeding overall hazard exposure thresholds, replace “the rate of hazardous event occurrences” with “hazardous event exposure:”, and replace “suggests” with “could suggest”.

Agenda includes status of work on GTR and UNR proposals and the Guidance and Interpretation Document (GID), and proposals to resolve open items concerning:

• The baseline document integration of GTR provisions,
• Introduction to the GID,
• Terms and definitions,
• ADS operational states,
• DDT requirements,
• Other ADS requirements,
• Safety of interactions between the ADS and its user(s),
• Safety cases and their assessment,
• SMS requirements and their assessment,
• Test environment requirements and their assessment,
• In-service monitoring and reporting requirements and related annexes,
• Approvals and related annexes,

The proposal revises para. 7.2.1.4.1. to replace the original text on personnel competencies with revised text that focuses on demonstrating confidence in personnel competence to support appropriate use of simulation results rather than prescribing specific qualifications, role profiles, or individual assessment criteria. Documentation may be supported through organisational or system-level arrangements including defining responsibilities, identifying knowledge and skills needed, providing training and supervision, maintaining records of experience and qualifications, and providing evidence of accreditations and management systems.

Proposal to delete the interpretation in para. 7.2.1.9.1. The Testing sub-group decided not to provide additional guidance regarding approaches for criticality. The topic is already covered in the Guidelines and Recommendations for ADS Safety (WP.29/2024/39). Several options were proposed but none achieved consensus, and potential compromise solutions did not provide a worthwhile addition on top of existing guidance already available in WP.29/2024/39.

Proposal to add a bullet citing Automated Vehicle Safety Consortium (AVSC) Best Practice for ADS Remote Assistance Use Case (Nov. 27, 2023), available at https://avsc.sae-itc.com/publication/avsc-04-2023, which provides detailed explanation of different discrete functions underneath the broader remote operations heading, divided into interactions with vehicles or a fleet of vehicles and interactions with humans, with each then divided into more specific types of functions.

Proposal to delete text from the draft Introduction section of the Guidance and Interpretation Document on ADS Regulation. The formal submission to GRVA produced in June was based on the Workshop information document that contained additional explanations on the status of work. These contents are not appropriate for the final version of the Guidance and Interpretation Document.

Proposal to clarify in the introductory text that the document does not limit requirements or introduce new requirements, update the reference to WP.29 adoption of the Regulations under the 1958 and 1998 Agreements, and add explanation that interpretation examples are not exhaustive, definitive, or compulsory and that each safety case must be tailored to the characteristics of the automated driving system, its features, their operational design domain, and assessed on its own merits.

Proposal to delete the final sentence of the Introductory Text of the GID, which states “Nonetheless, the amendments to these other regulations, including those that enable performance of the DDT, are outside the scope of the ADS regulations and of this document.” The deletion removes redundant language already conveyed in the preceding text that modifications of other regulations related to ADS are outside the scope of this document.

Proposal to replace “all entirely” with “solely” in the Introduction.

Proposal to specify GTR number 26 and UN Regulation number 185 to the Introductory Text.