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.
Session agenda for the 100th meeting of the Electric Vehicles and the Environment Informal Working Group on 13 October 2026. The agenda covers status reports and presentations on UN GTR 22, UN GTR 21, and UN GTR 25, with discussion of Euro 7 review clause, readiness monitoring, and regulatory topics including MPRs, energy throughput, and Part C virtual distance verification.
Draft agenda for the 7th meeting of Task Force 4 Frontal Impact & Restraint System Requirements, scheduled for 21 October 2026. The meeting will cover welcome and agenda approval, approval of previous meeting minutes, progress dashboard review, priority table alignment, preparation for a Japan Workshop in Tokyo in November 2026 including definition of robustness and workshop agenda, conclusions and next steps, and other business.
Provisional agenda for the 57th meeting of the Informal Working Group on DETA scheduled for 13 November 2026. Topics include approval of the agenda and draft minutes from the 56th session, state of play, new DETA software version, widening DETA scope, potential use of DETA for sharing technical information in the context of a proposed GRPE UN Regulation on brake emission of non-original parts, adding an attribute in DETA to indicate the latest series of amendments of approvals, and a potential update of the IWG’s Terms of Reference.
NHTSA announced activity to update voluntary guidance on automated driving systems. A Federal Register Notice published July 31, 2026 opened a docket to solicit comment on proposed topics for guidance development. NHTSA intends to release draft guidance documents on individual topics as chapters and consolidate them into a final updated guidance document. The public comment period is scheduled to close July 31, 2027 and may be extended. Potential chapters address Emergency Responder Interactions, Safety Management System, Remote Assistance and Operational Oversight, Safety Case, Adherence to Multi-Jurisdictional Laws, Work Zone Operations, ADS System Capabilities and Behavioral Competencies, Verification and Validation with Advanced Testing Methodologies, Considerations for Driverless Deployment, Crashworthiness, Post-Crash Behavior, Human Machine Interface, Accessible Design, Data Monitoring Capture Reporting and Governance, and Maintenance Fleet Operations Continuous Safety Monitoring and Post-Deployment Enhancement.
Draft agenda for the first session of the Task Force on the 03 series of amendments to UN R40, scheduled for 9 October 2026. The session will include welcome remarks, introduction of participants, adoption of the draft agenda, and introduction of the Task Force establishment proposal. IMMA will present an overview of the 02 series of amendments based on UN GTR No. 2. The Task Force Co-Chairs will introduce a proposal on conducting discussions on the 03 series, addressing the regulation progressively with Co-Chairs defining specific sections for analysis at each meeting. The basis for discussions is the draft R40.03 submitted by IMMA. Future Task Force sessions are scheduled before EPPR sessions in November 2026, January 2027, February 2027, and June 2027.
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.
Document presents technical challenges to defining retrofit kit types for electric conversion and approval processes. Identifies that retrofit kit type perimeter depends on the regulation considered, with different requirements across UN R10, R13, R100, R85, R138, WLTP, R79, R39, R51, R89, R121, and R122. Presents testing challenges at vehicle, component, and EPRS levels, noting that testing a kit type not installed on a vehicle is impossible to account for all impacts on the vehicle.