Proposal to amend para. 6.2.4. of Annex B4 to separate force measurement accuracy verification from other measurements taken at three-monthly intervals, requiring force measurement accuracy to be verified upon initial installation, after major maintenance and within 370 days before testing, and to require that each combination of wind speeds used for road load determination be validated separately.

Proposal to amend UN GTR No. 21 in a consolidated version. The document establishes a worldwide harmonized method to determine system power rating for electrified light-duty vehicles comparable to traditional measures for conventional vehicles. It specifies two test procedures: TP1 based on measured electrical power and estimated ICE power, and TP2 based on measured torque and speed at axles or wheel hubs. The GTR introduces the reference point concept to identify where mechanical power is first produced from stored energy, establishes applicability rules for each procedure based on powertrain architecture, requires manufacturers to provide verifiable K factors and hybrid power flow descriptions, mandates five test repetitions with averaging of the last four results, and adds internal validation criteria. The procedure aligns measurement accuracies with UN GTR No. 15 and permits use of validated onboard data where accuracy is demonstrated.

These Terms of Reference establish the UNECE EV fast- & smart-charging cluster as a joint activity of the WP.5 e-mobility Task Force and the IWG on EVE to promote user-friendly, safe and scalable adoption of fast and smart charging functionalities and their integration in the energy system. Task A develops a new WP.29 resolution on DC Fastest Recharge Power Curve for light duty vehicles through three phases: developing a harmonized procedure with validation testing, developing Key Performance Indicator requirements for consumer information, and investigating improvements and broadening to heavy duty applications. Task B inventories harmonization needs for other recharging capabilities and documentation through collecting existing standards, identifying discrepancies and gaps, and issuing a harmonized standardization and regulatory roadmap by vehicle category. The cluster operates under chairmanship from The Netherlands from January 2025 to October 2027 and technical secretariat from E-mobility Europe for the same period, meeting monthly virtually and twice yearly in hybrid or in-person format.

Industry guidelines developed jointly by CLEPA and OICA to provide a harmonised methodology for determining the carbon footprint of passenger cars through their full life cycle, from material extraction through production, use, and end-of-life. The guidelines establish four levels of assessment based on data granularity and intended application (ranging from public policy analysis to detailed supply-chain reporting), with fixed methodological approaches for Levels 3 and 4. They specify treatment of GHG emissions including biogenic carbon, land use change, and fossil emissions; define data quality requirements including primary data collection and allocation procedures; and establish system boundaries across material production, parts and vehicle assembly, use, and end-of-life stages, employing the Circular Footprint Formula for material recycling assessment.

Presentation of a concept for accelerated tire wear testing using a standard truck with independent steering on left and right sides. The method employs steering actuators from existing steered rear axles to create longitudinal and lateral slip, accelerating tire wear while maintaining representative behavior. Reference tire and test specimen can be mounted on separate axles to compare wear rates.

Test findings from seven circuits in the Republic of Korea show that estimated SRTT17S abrasion levels at 20 °C exceeded the specified range of 25–75 mg/(kmt) at six of the seven circuits tested. These results indicate that conducting UN R186 tyre abrasion tests in the Republic of Korea on circuits that meet the current range would be challenging at present. The Republic of Korea suggests reviewing the suitability of the current circuit abrasion level range and commits to support efforts to establish a circuit abrasion level range applicable to circuits worldwide.

Presentation of ZF’s tread wear tester for C3 tires, available for operation in Passau until at least September 2029. ZF intends to operate the test rig in cooperation with fka for method development, validation, and correlation with on-road testing. The machine will be fully operational at ZF with climate chamber, cooling and filtering, and powder supply, with target operational date Q1 2027. FKA plans to acquire the machine and operate it at the ZF site for the first few years.

The agenda covers welcome and adoption of the agenda, approval of minutes from the previous meeting, coordination and organization of work, power determination and battery range, UN Draft discussion, any other business, and notification of next meetings.

Minutes of the twelfth meeting of the IWG on EV/HFCV Retrofit Systems held 28 September 2026. The group adopted the provisional agenda and reviewed the work program, aiming to provide GRPE with a first draft of a future UN Regulation by 14–16 October 2026. The group focused on revising definitions in the draft UN Regulation, particularly EPRS definition, EPRS type, vehicle family, and installer provisions. Key unresolved issues include which components must remain identical within an approved type, alternative ways of grouping vehicles within a family, whether installer requirements should be included in the UN Regulation, and the scope regarding vehicles subject to UN Regulations Nos. 155 and 156.

Proposal to amend Annex 4, paragraph 9.8.3. to clarify that the ‘OBM transmission hash validity status’ indicates hash function computation completion, and amend Annex 5, paragraph 2.2.4.3. to correct quotation mark placement for consistency with other parts of the Regulation.

OICA presents comments and proposals on UN GTR 25 discussion items for the 100th session of the EVE informal working group. Topics include test procedures and approaches, a standardized 50 km virtual driving distance for Power Take-Offs, simplification of calculation formulas, a PTO family concept with predefined power classes, handling of body builder PTOs, minimum power thresholds, High Power Resistor energy consideration, measurement accuracy, and default values for auxiliaries. OICA indicates agreement on certain items, identifies areas requiring correction or further discussion, and outlines Phase 3 priorities.

JRC contribution to the EVE IWG on GTR No. 25 virtual distance verification. The document presents verification procedures based on energy throughput and virtual distance for stationary and dynamic tests. It discusses reading on-board values including virtual distance, propulsion energy, total energy throughput, and odometer readings. The document identifies outstanding questions regarding feasibility of using on-board values versus measured values, separation of stationary and dynamic test cases, and measurement approaches for V2X, PTO, and non-traction purposes energy.

Proposal to amend GTR 25 by modifying requirements for State-of-Certified Energy (SOCE) monitors, battery performance, and in-use verification procedures for heavy-duty electrified vehicles. The amendment refines test procedures for usable battery energy determination through four methods (Methods 1a, 1b, and 2, and an alternative chassis dynamometer method), updates measurement requirements and accuracy specifications, clarifies vehicle selection criteria during certification and Part A verification to establish worst-case configuration by highest UBE value, increases temperature tolerance during test soak to 7°C for improved applicability, revises Annex 2 to reflect additional regional regulatory requirements, and improves descriptions of test methods to enhance applicability and accuracy of results. Implementation occurs following entry into force as specified in regional provisions.

Draft amendments to the proposal to include testing of vehicles with limited speed (GRPE/2026/32). The document provides specifications for brake emissions testing including test-system requirements, climatic conditioning, brake dynamometer setup, sampling procedures, and data analysis methods for measuring particulate matter and particle number emissions from friction brake systems on light-duty vehicles.

Draft amendments to the proposal to improve and correct the procedure for measuring laboratory brake emissions on light-duty vehicles (GRPE/2026/30). The document establishes scope and application for vehicles of category M₁ and N₁, defines abbreviations and symbols, sets compliance requirements with emission limits for PM10, and specifies test procedures including cooling adjustment, brake bedding, and emissions measurement sections using the WLTP-Brake cycle. It addresses brake corner emission families, type approval requirements, conformity of production testing at least once every 12 months with statistical pass/fail decision charts, and conformity assessment through verification procedures.

Proposal to amend para. A.1.3.2.1. to modify the PEMS consistency check of exhaust mass flow and gas concentrations for fuels with a molar carbon to hydrogen ratio of 0. For such fuels, the formula in para. 8.4.1.6. of Annex 4 shall be used instead, with Equations 30 and 31 applied for Type 1A dual-fuel hydrogen engines. The verification shall not apply to engines operated on non-carbon fuels or dual-fuel engines when operated in dual-fuel mode with at least one fuel having a molar carbon to hydrogen ratio of 0.

Proposal to amend para. 2.45. to clarify that usable battery energy including UBEmeasured is considered as a positive, and amend para. 3.1.2. to specify that measured SOCR and measured SOCE values shall be determined by dividing measured values for electric range and UBE by certified values for electric range and UBE respectively, expressed in per cent, and that indicator values collected after the verification test procedure shall not be considered in the Part A verification.

Proposal to clarify applicable FCV test procedure, align run-in provisions with UN-R154, add SOC correction and modern hydrogen measurement provisions, correct inconsistencies, update hydrogen fuel specifications, and replace outdated UN GTR No. 15 reference in UN-R101 with UN-R154 for alternative road load determination.

Proposal to amend para. 1.1.3. to remove language requiring agreement with authorities regarding methods for customer values when specific methods are applied, delete redundant text already described in para. 1.1.1., and amend paras. 2.1.2. and 3.1.2. to clarify that usable battery energy values including UBE measured are considered as positive values.

Provisional agenda for the 35th meeting of the AVRS Task Force scheduled for 12 October 2026, including adoption of agenda, review of minutes from the previous meeting, discussion of a proposal for a Supplement to the 02 and 03 series of amendments to UN R154, discussion on ADS vehicles and their energy consumption and continuation of the Task Force mandate, a status report on GRPE-95, and any other business.

Agenda items include review of meeting minutes, overview of amendments to Brakes GTR 24 and UN R179, HD brakes and inertia considerations, projects on tyres and brakes including brake emissions from Phase 2 of the DfT Brake and Tyre Emissions Programme and characterization of brake particle emissions from electric vehicles, preliminary results of CPC inter-laboratory exercise on calibration materials, and any other business.

Joint OICA and CLEPA workgroup presentation on industry guidelines for life cycle assessment of passenger cars and parts. The guidelines establish a common global methodology for LCA data exchange along the supply chain, independent of regulatory development. Key technical points include defining functional units for passenger cars and a declared unit for parts, specifying primary and secondary data requirements, addressing chain of custody through aligned models and mass balance approaches, allowing mixed energy modelling approaches with market-based modelling for decarbonisation efforts, introducing representative vehicles for full vehicle LCA reporting, and introducing representative parts to simplify supplier reporting to OEMs.

The Task Force reviewed and approved regulatory amendments for ADS-equipped vehicles across multiple UN Regulations. Key decisions included adopting a simplified and consistent definition of ‘vehicle user’ for light-duty and heavy-duty vehicles, retaining original wording for warning signal transmission to ADS systems, and amending engine torque terminology under UN R49. Amendments were reviewed for UN R49, UN R83, UN R115, UN R154, UN R177, UN R179, and UN R180, with focus on consistency regarding ADS testing modes and an additional 25 kg mass allowance for vehicles of categories X and Y. The Task Force acknowledged that ADS operation may result in additional energy consumption not fully reflected in current testing procedures and agreed to seek GRPE guidance on possible future work.

The report describes the final status of Amendment 2 to UN GTR No. 24 covering laboratory measurement of brake emissions, including hardware requirements (brake dynamometer, enclosure design, fixtures, temperature measurement, sampling tunnel and plane), the WLTP Brake cycle test procedure with quality checks and temperature specifications, cooling air conditioning specifications, cooling adjustment section procedures for different brake categories, bedding and emissions measurement sections, and PM mass concentration measurement methodology validated through an Inter-laboratory Study across multiple testing facilities.

Proposal to introduce UBE_certified in the templates for the information document and WLTP test report under Annex A1 to UN R154. The proposal requests clarification on the number of significant figures for Usable Battery Energy of the vehicle at certification in the information document and seeks confirmation that the test result needs to be within 2 per cent of the declared value in the WLTP test report.