Minutes of the 48th SG-EDR conference call meeting held 15-16 September 2026. The group conducted final review of official documents for UN R160 and UN R169, reaching agreement on multiple technical specifications: DDAW recording duration of 60 minutes (bracketed for GRSG consideration), DCAS duration of 1000 seconds and 10 warnings, LDWS and data element frequencies of 4 Hz and 10 Hz respectively, yaw rate frequency increased to 10 Hz, and airbag warning lamp adjustments. Transitional provisions set for 2030 and 2035. EDR Step 3 workstream planning identified topics including triggering sensitivity, data elements, L-category vehicles, and data survivability. Governance discussion noted DSSAD separation under IWG ADS2, with EDR work continuing under potential new taskforce structure.

Final draft proposal to:

• Amend para. 1.4. to clarify recording obligations for data elements when sensors lack design capability to meet format requirements,
• Amend para. 2.20. to define engine throttle as driver-requested acceleration torque demand,
• Amend para. 2.73. to define trigger activated,
• Amend para. 5.4.3. to clarify crash test requirements and specify data retrievability after impacts of severity levels set by UN Regulations Nos. 94, 95 or 137,
• Insert new paras. 12.12. through 12.17. establishing transitional provisions with dates from entry into force through 1 September 2035,
• Amend Annex 4 Table 1 to add data elements including occupant size classification, vulnerable road user secondary safety system warning indicator status, and advanced driver distraction warning time since warning issued, with modified recording intervals, sample rates, and ranges for existing data elements.

Final draft proposal to amend para. 1.4. to clarify that recording requirements depend on availability of the trigger or data element itself, amend para. 5.3.1.2. to permit the EDR to write last stop trigger data in volatile memory only, accommodating at least five most recent stops to be overwritten on a first-in first-out basis until any other trigger occurs or the vehicle master control switch is deactivated, and amend paras. 2.5., 2.48. and 2.49. for clarity and consistency with UN Regulation No. 160.

Proposal to introduce a unified Position Code (X-Y) for all seating positions, add seven new mandatory data elements for driver operation and seat-track position to Annex 4 Table 1, and harmonize ADAS status enumerations into one unified set eliminating fragmented and inconsistent wording across system entries.

Document presents Korean research on event data recorder (EDR) data survivability in electric vehicles following post-crash fires. Analysis of nine Korean EV fire cases shows EDR data retrieval failed in three cases due to ACU damage in fully burned vehicles, while six cases achieved data retrieval despite water immersion from firefighting. The document proposes water immersion testing to assess EDR data survivability for inclusion in EDR Step 3, referencing international automotive standards for test method development.