Thursday, 26 March 2026
Week 13
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Upcoming Meetings

Informal Working Group on Children Left in Vehicles | Session 15 | 24-27...
Task Force on Autonomous Vehicle Signalling Requirements | Session 30 | ...
A-LCA Subgroup 2: Material & Material Recycling | Session 30 | 26 Mar
A-LCA Subgroup 2: Material & Material Recycling | Session 29 | 26 Mar
RDASEP Task Force on Data Analysis | Session 10 | 27 Mar
GRSG Automated Vehicles Regulatory Screening | Session 20 | 30 Mar
Safer and Cleaner Used and New Vehicles in Developing Markets | Session ...
Automotive Life Cycle Assessment | Session 37 | 31 Mar
EqOP Task Force on Rear-Impact Assessment | Session 10 | 31 Mar
Task Force on the Fitness of GRVA Regulations for Application to ADS Veh...
GRSP Task Force on Automated Vehicles and Regulation Screening | Session...
RD-ASEP Editing Task Force | Session 4 | 8 Apr
View complete calendar

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Latest Documents

26 Mar 2026 | CLIV: Draft UN Regulation for type approval of buses and coaches | C...
26 Mar 2026 | Event Data Recorders/Data Storage Systems for Automated Driving: Age...
26 Mar 2026 | UN R169: Draft EDR Step 2 amendments | SG-EDR-46-13
26 Mar 2026 | Subgroup on EDR: Notes from the 46th (March 2026) session | SG-EDR-4...
26 Mar 2026 | UN R160: EDR Step 2 open proposals | SG-EDR-46-15
26 Mar 2026 | Event Data Recorders/Data Storage Systems for Automated Driving: Not...
26 Mar 2026 | RD-ASEP Editing task force status report | RDASEP-Edit-04-01
26 Mar 2026 | UN R51: Working draft amendments for RD-ASEP | RDASEP-Edit-04-02
(9 posted today) (49 posted during the past week)
CLIV: Draft UN Regulation for type approval of buses and coaches
Reference Number: CLIV-15-04

Draft text pursuant to the third day of the CLIV informal group 15th session.

Meeting Sessions: 15th CLIV session (24-27 Mar)
Document date: 26 Mar 26
Relevant to
WP.29 Regulatory Project | Children left in vehicles
Download from UNECE: .docx format
Event Data Recorders/Data Storage Systems for Automated Driving: Agenda for the 32nd (May 2026) session
Reference Number: EDR-DSSAD-32-01
Meeting Sessions: 32nd EDR-DSSAD session (7 May)
Document date: 25 Mar 26
Relevant to
UN Regulation No. 160 | Event Data Recorders, UN Regulation No. 169 | Event Data Recorders (EDR) for heavy vehicles, and WP.29 Regulatory Project | Data Storage Systems for Automated Driving
Download from UNECE: .docx format
UN R169: Draft EDR Step 2 amendments
Reference Number: SG-EDR-46-13

This document presents draft amendments to UN Regulation No. 169 for the EDR Step 2 workstream. It defines non-volatile memory as permanent EDR data storage retained after power loss, and volatile memory as temporary buffering that does not retain data. Requirements specify that EDRs capture and record data to non-volatile memory when triggered, with capacity for at least five events. Trigger conditions include sudden deceleration exceeding 3.25 m/s² for 0.7 seconds and vehicle stops at 0 km/h for 20 seconds. An amendment allows certain stop events to be recorded in volatile memory first, transferring to non-volatile memory when other triggers occur or the master switch deactivates, reducing memory wear in vehicles with frequent stops.

Meeting Sessions: 46th SG-EDR session (18 Mar)
Document date: 26 Mar 26
Relevant to
UN Regulation No. 160 | Event Data Recorders
View full document file for more information
Download from UNECE: .docx format
Subgroup on EDR: Notes from the 46th (March 2026) session
Reference Number: SG-EDR-46-14

The Subgroup on EDR held a conference call to discuss Event Data Recorder Step 2 specifications. Key discussions included: AEB trigger recording intervals, with agreement on -2.5 to 2.5 seconds; ADDW and DDAW data elements referred to GRSG with competing proposals in square brackets; DCAS data elements with unresolved differences between industry and UK proposals on recording intervals and frequency; time to collision (TTC) deferred to Step 3; engine throttle deletion deferred pending further consideration; transitional provisions with industry proposing 2031 implementation versus EC’s 2029; and EDR for ADS requiring further development. Memory definitions for R169 and R160 were agreed upon.

Meeting Sessions: 46th SG-EDR session (18 Mar)
Document date: 26 Mar 26
Relevant to
UN Regulation No. 160 | Event Data Recorders and UN Regulation No. 169 | Event Data Recorders (EDR) for heavy vehicles
Download from UNECE: .docx format
UN R160: EDR Step 2 open proposals
Reference Number: SG-EDR-46-15
Meeting Sessions: 46th SG-EDR session (18 Mar)
Document date: 26 Mar 26
Relevant to
UN Regulation No. 160 | Event Data Recorders
Download from UNECE: .docx format
Event Data Recorders/Data Storage Systems for Automated Driving: Notes from the 31st (March 2026) session
Reference Number: EDR-DSSAD-31-03

The previous session report was approved with a note on post-crash recording intervals. A DSSAD Guidance Document feedback deadline was set for month-end. Phase 2 discussions on near-miss events require clarification of concepts and their safety contributions. For EDR Step 2, a 10 Hz sampling rate was adopted over 2 Hz following opposition from industry regarding implementation burden and support from regulatory bodies for accident reconstruction needs. Outstanding discussion items will be consolidated into a working document. Terms of Reference discussions on maintaining current structure versus integrating DSSAD into the ADS Informal Working Group will continue. The May 12 meeting was rescheduled due to conflict with ESV Toronto.

Meeting Sessions: 31st EDR-DSSAD session (19 Mar)
Document date: 26 Mar 26
Relevant to
UN Regulation No. 160 | Event Data Recorders, UN Regulation No. 169 | Event Data Recorders (EDR) for heavy vehicles, and WP.29 Regulatory Project | Data Storage Systems for Automated Driving
Download from UNECE: .docx format
RD-ASEP Editing task force status report
Reference Number: RDASEP-Edit-04-01
Meeting Sessions: 4th RDASEP-Edit session (8 Apr)
Document date: 25 Mar 26
Relevant to
UN Regulation No. 51 | Vehicle Noise Emissions
Download from UNECE: .pptx format
UN R51: Working draft amendments for RD-ASEP
Reference Number: RDASEP-Edit-04-02
Meeting Sessions: 4th RDASEP-Edit session (8 Apr)
Document date: 25 Mar 26
Relevant to
UN Regulation No. 51 | Vehicle Noise Emissions
Download from UNECE: .docx format
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Working Party on Noise and Tyres
Session 76
5-7 Sep 2022 | Geneva
  • Meeting documents
    • Session agenda
    • Formal submissions
    • Informal submissions
    • Session report
Download: GRBP/74 from UNECE: .pdf format .docx format
Attendance
1. Adoption of the agenda
2. UN Regulation No. 51 (Noise of M and N categories of vehicles)
3. UN Regulation No. 138 (Quiet road-transport vehicles)
4. Tyres
4. (a) UN Regulation No. 30 (Tyres for passenger cars and their trailers)
4. (b) UN Regulation No. 109 (Retreaded tyres for commercial vehicles and their trailers)
4. (c) UN Regulation No. 117 (Tyre rolling resistance, rolling noise and wet grip)
4. (d) UN Regulation No. [164] (Studded tyres)
5. Draft UN Regulation on reverse warning sound
6. Exchange of information on national and international requirements on noise levels
7. Proposals for amendments to the Consolidated Resolution on the Construction of Vehicles
8. Development of the International Whole Vehicle Type Approval system
9. Highlights of the recent sessions of the World Forum for Harmonization of Vehicle Regulations
10. Exchange of views on the future work of the Working Party on Noise and Tyres
11. Other business
12. Provisional agenda for the next session
13. Election of officers
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