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Proposal to amend para. 8.1.5.1. (ADS UNR) of the audit of the safety policy guidance: Change “may state” to “states,” “may address” to “addresses,” and “may therefore describe” to “therefore describes.” The rationale states that using “may” in the interpretation paragraphs seems inappropriate for explaining regulatory intention, and present tense better suits these requirements.
This document presents the status of the Guidance and Interpretation document for UN Regulation and GTR ADS, submitted by the OPI on ISMR provisions. It outlines closed topics including clarification on EDR trigger for critical occurrence, confidentiality and publication of information, and guidance on short-term, periodic templates and SPIs. Ongoing work addresses guidance on occurrences with examples of situations and metrics for ADS operation outside its ODD, and guidance for development of scenarios derived from ISMR activities.
The 20th ADS informal working group session and 17th GRVA Workshop on Automated Driving Systems will meet during 27 April-1 May 2026. The session will address proposals to amend the draft Guidance and Interpretation Document covering definitions, performance of the DDT, scope, application for approval, general requirements, interactions between the ADS and its user(s), safety management systems, post-deployment safety, test environments, and certificate of compliance. Additional agenda items include further development of the GTR and UNR and consideration of next steps and future meetings.
This proposal for ADS Regulation version 2 addresses remote support for automated driving systems. ECE/TRANS/WP.29/2026/137 contains 19 instances of remote references across definitions, requirements, and annexes, with only remote termination defined. The proposal requests UNECE GRVA to introduce and define different types of remote support, clarify terminology distinctions between remote monitoring, remote assistance, and remote intervention, and articulate which aspects of remote support the regulation covers. The submitter offers to provide definitions developed with ISO 26361 for consideration at the July 2026 ADS IWG meeting.
Proposal to revise Annex 3, item 2 regarding “ADS failure to achieve a mitigated risk condition when necessary.” The revised text maintains the four bullet points describing when such occurrence is expected to be reported when an MRC is required. The rationale states the regulatory text does not require reporting when an MRC is achieved but in an unsafe stop location, which is not defined in the regulation, nor when an MRC is achieved but conflicts occur during the MRC.
Proposal to clarify MRC for ADSF-2 in para. 6.1.5.4.1. The revised text corrects the assertion that ADSF-2 features can meet a lower standard for MRC because of fallback user presence in ADSF-1. It clarifies that ADSF-2 features do not include an ADS fallback response requiring a fallback user, though such features may be present in vehicles with human users. Both ADSF-1 and ADSF-2 features must aim to bring the ADS vehicle to a stop in a safe location complying with traffic rules following ODD exit.
Proposal to update the explanation on reportable occurrences in Annex 1 (GTR) and 3 (UNR). The revision refines language in the requirement describing the manufacturer’s Safety Management System by removing “expected” to avoid implying obligation and clarifying the link between occurrence monitoring, reporting, analysis, system updates, improvements, and continuous improvement processes.
Proposal to clarify EDR provision in Annex on thresholds. For vehicle categories M2, M3, N2, and N3, the revised text clarifies that UN Regulation No. 169 does not include a representative delta V threshold. The manufacturer could determine their own delta-V trigger for a critical occurrence, including one based on a subset of EDR triggers, with no obligation to do so.
Recommendation on the measurement of particulate number emission of diesel vehicles with a wall flow particulate filter during periodic technical inspections.
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