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.

Proposal to update UN R49 to accommodate Automated Driving Systems (ADS). The supplement modifies definitions, mass calculations, warning systems, and testing procedures to apply to vehicles without human drivers. References to drivers are replaced with “vehicle user” terminology, and special provisions are added for ADS-equipped vehicles in testing and operational requirements.

This Supplement proposes to update UN R154 to accommodate vehicles fitted with Automated Driving Systems (ADS), specifically categories X and Y. Amendments include new definitions for ADS-related terms, modifications to testing procedures, and updated references to vehicle construction standards. Driver-related systems are renamed to account for vehicles without human drivers. Special provisions establish requirements for ADS road load determination and testing modes, while messaging systems are adapted to send signals to ADS instead of or in addition to driver notifications.

This document is also available with tracked changes.

Proposal to amend UN R180 to incorporate vehicles with Automated Driving Systems. Changes include adding ADS abbreviation and definitions for “ADS user” and “Vehicle user”; amending terminology throughout from “driver” to “vehicle user” or “driver and/or ADS”; introducing the Excess Exhaust Emissions Driver/user Warning System definition; modifying accelerator pedal references to include torque demand from ADS; and clarifying that warnings shall be sent to the ADS, which will then inform the relevant ADS user.

TF-AVRS screened UN Regulations for automated vehicle application, focusing on UN R83 and UN R154. Changes enable automated driving system vehicles to perform driver-conducted tests like coast-down tests and roller bench cycles. Modifications include defining vehicle users as drivers or ADS users, adjusting driver mass calculations for X and Y categories, and updating testing mode terminology. TF-AVRS proposes amendments to 17 UN Regulations and seeks guidance on addressing remaining topics.

Proposal to establish a Task Force on Swappable Batteries (TFSB) under GRPE. The task force will review WP.29 regulations and international standards to identify technical requirements for swappable-battery vehicles, focusing on commercial vehicles. It will define vehicle types, clarify vehicle type approval processes, and develop guidance documents. The task force will coordinate with other working groups including GRSP and GRVA, with deliverables expected by October 2027.

This document is also available with tracked changes.

This document is also available with tracked changes.

This document is also available with tracked changes.

The Electric Vehicles and the Environment informal group reported on amendments to UN Global Technical Regulations 21, 22, and 25 governing electrified vehicle power, battery durability for light-duty vehicles, and battery durability for heavy-duty vehicles. Proposed changes include revised test methods, boundary conditions, definitions, and alignment with UN Regulation transposition efforts. Future work includes investigating fuel-cell vehicles, charging power curves, and alternative test methods.

This document is also available with tracked changes.

This document is also available with tracked changes.

This document is also available with tracked changes.

Proposal to delete two paragraphs relating to “Operating Mode Switch” that were overlooked when that concept was removed from Regulation No. 83, from both the manufacturer’s information document (Annex 1) and the approval certificate addendum (Annex 2). The same documentation requirements were removed from the 08 series of amendments (during GREP-93), differing only in paragraph numbering.

The F&SC cluster aims to promote the user-friendly, safe and scalable adoption of fast and smart charging functionalities of electric vehicles, and their integration in the energy system

Proposal optimises the measurement accuracy requirements for chassis dynamometer equipment and the measurement acquisition of the
intake manifold pressure in system power testing for high-performance vehicles and makes editorial corrections.

Proposal clarifies the text relating to On-Board Diagnostics (OBD)

Proposal brings clarity to references and to correct copy & paste mistakes and possible misinterpretations related to in-vehicle battery durability and low
temperature.

Proposal clarifies the OBFCM requirements

Proposal for change in transitional provisions to take into considerations of the lifetime value retention status

Current status of calculation method and component dynamometer tests

Additional validation work to support the the proposal to:
• Provide new evidence based on additional analysis.
• Compare MAW window validation and RDE results using work, fuel, and CO₂-based parameters.

Provides corrections and updates to the requirements, including to reflect the fact that requirements for manipulation devices and manipulation strategies

Proposal for amendments to ECE/TRANS/WP.29/GRPE/2026/24

This proposal updates provisions for automated vehicles and automated driving systems.

Review of the different proposed amendments (03/04 series with different Supplements) to the regulations