The agenda and minutes from the 51st session were adopted without comment. The group discussed a status report on Supplement 3 to UN R10.07, updated Terms of Reference, and proposals for the 08 series of amendments, with decision to move submission to 2027/2028 to integrate test modes for automated driving systems. The group reviewed proposals on steer-by-wire systems, CISPR average detector clarification, flicker requirements, and AC/DC charger specifications, concluding that most require further elaboration or revision. The 53rd meeting is scheduled for 1–2 July 2026 in Paris.

The EMC informal group proposes to hold a meeting in Tokyo during the 2nd or 4th week of November 2027, with demonstration venue also in Tokyo. Proposed demonstration content is to be determined for automated driving systems. The meeting contents are subject to change.

Proposal to clarify ADS Active Mode, clarify methods to activate ADS using test equipment or by modifying in-vehicle ADS-related ECU software, clarify test objects for ESA at component-level or system-level, and clarify test methods when ADS cannot be activated in an anechoic chamber, when testing in a non-active state, or when errors occur upon ADS activation. This preliminary proposal is intended for presentation at IWG EMC meetings in autumn 2026.

Proposal regarding methods for evaluating electromagnetic immunity of blind-spot detection systems. The proposal identifies this as a subject for discussion as part of ADAS evaluation methods. The form requests consideration of revisions to evaluation methods, with reference to presentation materials. The proposal’s disposition status remains to be determined by the IWG.

Methods for evaluating electromagnetic immunity of blind-spot detection systems are proposed using a simple reciprocating motion device equipped with a reflector. The electromagnetic immunity test is conducted after the BSD system has been activated. Vehicle’s electromagnetic immunity test methods and conditions are consistent with the previous ones. Reproducibility has been verified across various vehicle models with only minor adjustments required. The proposal seeks opinions from member countries regarding the necessity of electromagnetic immunity evaluation methods for BSD systems.

OICA proposes that Roadmap Items 2, 2bis, 3, and 4 be withdrawn or deferred until relevant international standardization bodies publish validated methodologies. OICA opposes radiated emissions requirements below 30 MHz in driving and charging modes, radiated emissions in the 16 GHz range, and variable driving conditions assessments, citing lack of technical rationale, absence of published international standards, poor reproducibility for large vehicle categories M₃ and N₃, and inconsistency with WP.29/2024/39 reproducibility standards. New R10.08 work items must demonstrably enhance safety, align with published international standards, and maintain regulatory stability per ECE/TRANS/WP.29/1044/Rev.3 and WP.29-196-07, WP.29-196-26, and ECE/TRANS/WP.29/1182.

Proposal to address REESS using offboard AC/DC chargers. Some vehicles with REESS use offboard AC/DC chargers, a configuration not described in UN R10. The proposal adds test configurations for vehicles charging through offboard AC/DC chargers to multiple annexes, including flowcharts defining charging mode configurations and specifications for AMN or DC-charging-AN or AN for offboard AC/DC chargers below 60 Vdc. The proposal is based on IWG-EMC-49-12e.

Proposal to add radiated emission testing requirements in the frequency range 1 GHz to 6 GHz. New clause 6.2.2.5 specifies limits for vehicle measurements at 3.0 ± 0.05 m antenna distance using peak and average detectors, with limits of 70/50 dB(V/m) for 1000–3000 MHz and 74/54 dB(V/m) for 3000–6000 MHz. New Annex XY describes test methods using IEC 61000-6-3 Ed.4.0 and CISPR 12 provisions. New clause 6.5.3 establishes ESA broadband type approval limits with higher thresholds. New Annex XZ prescribes ESA measurement methods, including test arrangements for REESS charging mode coupled to the power grid.

The IWG-EMC 52nd meeting is scheduled for 7 May 2026 as a web conference. The agenda includes feedback from the GRE 94th session regarding Supplement 3 to UN R10.07 and discussion of the roadmap for 08 series of amendments with proposals from Contracting Parties and non-governmental organizations. The session will address GRE-94-56-Rev.2 and documents covering topics such as harmonics limits, charging conditions, immunity requirements, and radiated requirements. The next meeting is scheduled for 1–2 July 2026 in Paris.

Proposal to establish items for the 08 series of UN R10: address immunity-related functions required by multiple UN Regulations through discussion of whether to include these features in UN R10 or relocate electromagnetic compatibility provisions to individual UN Regulations; amend test procedures for complex systems including steer-by-wire, brake-by-wire, and ADAS features to establish clear protocols and reduce unlevel playing field items; improve the general approval process through precise vehicle type description and definition of high-level objectives; describe dwell time selection through ISO standard 1154 as minimum; discuss ISO 17025 evaluation principles; discuss antenna position at 3m versus 10m for best-case and worst-case scenarios; and require robust electromagnetic compatibility protection with critical details described in test reports and information documents.

OICA opposes inclusion of four roadmap items in UN R10.08 amendments based on WP.29 principles for evidence-based rulemaking. Items 2 and 2bis (radiated emissions below 30 MHz) fail reproducibility standards, lack validated test methods for all vehicle categories, and rely on standards not applicable to internal combustion engine vehicles. Item 3 (16 GHz range) violates the requirement for specific standard versions as CISPR 12 lacks finalized methodology. Item 4 (variable driving conditions and 4-side antenna assessment) presents measurement reproducibility concerns. OICA recommends deferral pending publication of validated international standards.

The IWG-EMC 51st session (March 2026) addressed the roadmap for UN R10.08 amendments and proposals. Key discussion items included transitional provisions for UN R10.07, artificial network corrections for Supplement 3, harmonics and flicker requirements, radiated emissions aligned with CISPR standards, and extensive work on automated driving system (ADS) fitness requirements. The group extensively debated ADS test configurations, immunity and emissions testing, laboratory capabilities, and steering system requirements. Multiple proposals—including IWG-EMC-51-04, IWG-EMC-51-06, and IWG-EMC-51-07 on harmonics and flicker—were discussed. The session concluded with plans to submit ADS fitness proposals and artificial network corrections as Supplement 3 of UN R10.07 to GRE, with next meetings scheduled for May and July.

Proposal to update Terms of Reference for the Informal Working Group on Electromagnetic Compatibility. Items 21 and 22 add timelines for the 08 series of amendments of UN Regulation No. 10: an informal document for the 95th session of GRE in October 2026, and a formal document for the 96th session in April 2027, with final submission by end of January 2027, for adoption in WP.29 in November 2028.

Proposal to insert new paragraphs 0 through 0.1.2, amend paragraphs 1.1, 1.3, and 2.12, insert new paragraphs 2.9.4 and 2.32, delete paragraphs 2.26 and 2.27, insert new paragraph 3.1.9, insert new paragraph 6.11 with sub-paragraphs, amend paragraph 9.3.2, and amend Figures 3, 4, 5, and 6 in Appendix 8, and add items 74 and 75 to Annex 2A, insert paragraph 7 in Annex 3A, and amend Annex 4, Annex 5, Annex 6, and related sections to accommodate ADS vehicles, including categories X and Y.

Proposal to amend UN R86 to address Automated Driving Systems:

• Insert new paragraphs 0, 0.1 to 0.1.2 introducing Supplement 3 to address vehicles of categories X and Y and conventional vehicles equipped with an Automated Driving System (ADS)
• Amend paragraph 1.1 footnote 1 to reference ECE/TRANS/WP.29/78/Rev.8
• Amend paragraph 1.3 subparagraph (a) to include control by an ADS
• Insert new paragraph 2.9.4 defining “Presence of an ADS”
• Amend paragraph 2.12 to expand immunity related functions to include ADS-related functions and functions related to charging mode when coupled to the power grid
• Delete paragraphs 2.26 and 2.27
• Renumber paragraphs 2.28 to 2.33 as 2.26 to 2.31
• Insert new paragraph 2.32 defining “ADS test configuration”
• Renumber paragraph 2.34 as 2.33
• Insert new paragraph 3.1.9 requiring specification of seating position if driver’s seat is not the front seat nearest to opposing traffic
• Insert new paragraph 6.11 and subparagraphs 6.11.1 to 6.11.3 establishing special requirements for ADS-equipped vehicles including alternative test methods and ESA immunity testing
• Amend paragraph 9.3.2 to reference ADS degradation in conformity verification
• Amend Appendix 8 paragraph 2 figures 3, 4, 5 and paragraph 3 figure 6 to correct charging notation from “>” to “<” and adjust time from 60 to 20 seconds
• Add new items 74 and 75 to Annex 2A addressing ADS presence and description
• Insert new paragraph 7 to Annex 3A Appendix and renumber former paragraph 7 as 8
• Amend Annex 4 paragraph 2.1.2 to reference ADS capability to switch equipment
• Amend Annex 5 paragraph 2.3 to reference ADS
• Amend Annex 6 paragraph 2.1.1.2 to establish “50 km/h mode”, “Brake mode” and “Active ADS Mode” test conditions with corresponding failure criteria including ADS operational state requirements
• Amend paragraph 2.1.1.3 to reference ADS
• Amend paragraph 2.1.1.4 to reference ADS features control
• Delete paragraph 2.1.1.5
• Amend paragraph 2.1.2 to permit manufacturer evidence for systems not operating under specified conditions
• Amend paragraph 2.2.1.3 to reference ADS for equipment switched OFF

Proposal to introduce Automated Driving System (ADS) requirements into the Regulation and correct figures in Appendix 8. The proposal inserts new introductory paragraphs addressing vehicles of categories X and Y equipped with an ADS; amends paragraph 1.3 to include ADS control requirements; inserts new paragraph 2.9.4 on ADS presence; extensively revises paragraph 2.12 on immunity related functions to include ADS-related functions; deletes paragraphs 2.26 and 2.27; inserts new paragraph 2.32 defining “ADS test configuration”

IWG EMC prepared supplement 3 to the 07 series of amendments to UN R10, with terminological adjustments for ADS adoption, addition of categories X and Y, technical refinement of ADS including a new ADS table in Annex 6 paragraph 2.1.1.2, and modifications to artificial networks with discharge voltage below 50 V and maximum discharge time of 20 seconds. For the 08 series, approved proposals are prioritised on a roadmap.

Proposal to amend to fit Automated Driving System (ADS) requirements. New provisions introduce vehicles of categories X and Y equipped with an ADS, extending application to vehicles without driver’s compartment and manual driving controls.