This document specifies testing procedures to verify door-opening systems remain functional after complete power loss. Interior testing requires unlocking, unlatching, and opening doors from inside the vehicle five times after a 60-minute wait following power disconnection. Exterior testing requires unlocking, unlatching, and opening doors from outside five times under identical conditions. All operations use only permanently installed components without tools.

The GRE Taskforce on Autonomous Vehicle Signalling discussed Automated Driving System marker lamps, including Japanese input on Vienna Convention compliance, vehicle categories under the 1958 Agreement, mandatory rear installation requirements, variable intensity settings, daytime/nighttime definitions, side marker lamp configurations, agricultural vehicle applicability, rooftop installation alternatives, and operational conditions adjacent to direction indicators. Several technical issues remain unresolved. An informal proposal for a hybrid regulation is expected for the 95th GRE session. The next meeting is scheduled for 18 June 2026.

Proposal to establish a UN Global Technical Regulation for measuring brake particulate matter and particle number emissions from heavy-duty vehicles. The regulation defines laboratory test procedures using a brake dynamometer and the Worldwide Harmonized Heavy-Duty Vehicles Brake Cycle (WHBC), encompassing 20,353 seconds with 246 brake events across three driving segments. Tests require brake bedding with six WHBC repetitions, followed by emissions measurement. Laboratories must measure PM10 and PM2.5 mass gravimetrically and total and solid particle numbers (TPN10, SPN10) using particle counters. Technical specifications cover brake enclosure design, sampling tunnel configuration, climatic control, instrumentation calibration, and data reporting requirements to ensure reproducible and comparable brake emissions testing across regions.

Seven UN Regulation proposals were reviewed for consistency and errors. Issues identified include: unclear optical-logical signal transitions in R64; redundant definitions that should reference RE3 via footnotes; inconsistent ADS activity terminology requiring standardization to “when an ADS feature is active”; incorrect Category Y vehicle references in R51; spelling and numbering errors across multiple regulations; inconsistent Mass in Running Order definitions; and unclear testing provisions requiring improved cross-referencing. Corrections are necessary for regulatory robustness.

Proposal from the GRE EMC informal working group. The modifications extend the regulation’s scope to vehicles without driver compartments or manual controls. Changes include new definitions for ADS test configurations, updated immunity-related functions to address ADS sensor performance, and revised test conditions for vehicles with active ADS features. Additional reporting requirements for ADS systems are introduced in regulatory forms.