Proposal to remove para. 5.2.1.2. titled “Emergency braking” and delete the corresponding justification text “Update to paragraph 5.2.1.2.” At the January 2026 GRVA, it was agreed not to proceed with an amendment proposed to para. 5.2.1.2. The current proposal GRVA/2026/21 does not reflect the discussions from the previous session of GRVA.
The Informal Working Group on Cyber Security and Software Updates discussed amendments to UN R155 and UN R156 for multi-stage approval, including simplified handling for low-risk devices and clarification of intrinsic cyber risk assessment. The group reviewed proposals from GRVA-25-31 and GRVA-25-32 concerning continued validity of approvals and Certificate of Compliance issuance. A Sub-Working Group was established to develop component and separate technical unit approval concepts. Pending discussion include RXSWIN application to components, STUs, and the extent of application to UN R155 and UN R156, and type-approval numbering for software updates.
Supporting presentation on the proposal to insert a new sub-paragraph 5.6.1.1.4.1 to exempt ACSF Category A functions intended solely to support low-speed vehicle controllability manoeuvres in off-road environments from the obstacle detection requirements of paragraph 5.6.1.1.4, provided the function operates only until 5 km/h with 1 km/h tolerance, is activated deliberately by the driver in off-road environments only, requires the driver to be in the driver’s seat with safety belt fastened, and allows the driver to retain control and override or deactivate the system at any time.
23rd subgroup session agenda, roadmap outline, and next steps.
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