This paper is to inform relevant GRs of the ongoing activities within the CLIV informal group and the potential influence on the work under the responsibilities of the GRs. CLIV is in Phase 2 developing a new UN Regulation on Children Left in Vehicles for vehicle categories M₁, M₂, M₃ and N₁. The draft regulation includes requirements for visual and audible external warnings upon detecting a CLIV event. The IWG prioritises development for buses first, then light vehicles. The draft regulation aims to mitigate risk of serious or fatal injuries to children left in vehicles. Upon detecting a CLIV event, visual and audible external warnings will be generated using an SOS morse code pattern to distinguish from existing warnings.

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.

The revised text adds ISO 21448, GB/T 34590 Road vehicles-Functional safety, and GB/T 43267 Road vehicles – Safety of the intended functionality to the original reference standards ISO 26262-2/8:2028 and ISO 9001 2015. GB/T 34590 is an important reference for functional safety in China and ISO 21448 and GB/T 43267 are important references for SOTIF.

The change request seeks clarification that “real-time” operational and tactical functions of the DDT, particularly “sensing and perception” and “planning and decision”, could be achieved through real-time sensor inputs alone or through integration of sensor inputs with other contextual information such as map-based data, to aid technical inspectors during testing and assessment of ADS systems.

Proposal to clarify components and functions of the ADS and other vehicle systems relevant to meeting the requirements of the regulation (paras. 5.3.1.4.2 (GTR)/7.3.1.4.2 (UNR)). The revised text specifies that other vehicle systems could include shared components or functions such as sensors, map data, and GNSS used for assistance systems or positioning. Information from outside the vehicle may be included if used to meet regulation requirements. The manufacturer could use different diagram types provided information is present, and additional information regarding wireless links could be included.

Proposal to revise the explanation for para. 8.3.3.1 to clarify the relationship between assessment of the manufacturer’s testing under 8.3.2 and confirmatory testing. The revision adds language specifying that during assessment, the assessor can determine the need for additional scenarios or variations and shall convey this information to the manufacturer requesting additional test evidence under agreed upon protocols. The revision changes “trustworthy” to “accurate” and specifies that confirmatory testing verifies the accuracy of the manufacturer’s testing, with the exception of real-world testing that cannot be precisely replicated.

Proposal to revise the explanation for para. 6.1.2.1. of the ADS UN Regulation. The revision clarifies that where collisions involving the ADS occur during the approval process, including manufacturer’s on-road testing or confirmatory testing, a root cause analysis must be done and an explanation provided. Where the ADS is determined to have played a role in causation, the manufacturer will provide evidence of how related causal factors have been addressed in the final ADS prior to approval. Post-deployment collisions are covered by the ISMR process as implemented within national law.

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.