| UN R13: Proposal for a Supplement to the 12, 13, 14 and 15 series of amendments |
| Reference Number: GRVA-24-08 |
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Proposal to clarify that the parking brake may be actuated while the vehicle is in motion via actuation of the vehicle’s service braking system by means of an auxiliary control which could be an Electronic Parking Brake (EPB) and to promote consistent interpretation of the activation conditions for an Emergency Stop Signal (ESS), including by application of the service braking system via the EPB control. |
| Submitted by: CLEPA and OICA |
| Meeting Sessions: 24th GRVA session (19-23 Jan) |
| Document date: 13 Jan 26 |
| Relevant to: UN Regulation No. 13 | Heavy-Duty Vehicle Braking |
| Click here to view the full document file |
| Screening for ADS vehicles: Proposal to amend GRVA/2026/6 |
| Reference Number: GRVA-24-37 |
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Proposal to remove the draft provisions concerning the approval of stability performance under UN R13 and UN R140 for ADS vehicles via demonstration under the safety case provisions of the forthcoming UN Regulation on ADS, and to remove bracket unintentionally retained in the original submission. |
| Meeting Sessions: 24th GRVA session (19-23 Jan) |
| Document date: 21 Jan 26 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 13 | Heavy-Duty Vehicle Braking, UN Regulation No. 89 | Speed Limitation Devices, UN Regulation No. 140 | Electronic Stability Control Systems, WP.29 Regulatory Project | Automated Driving Systems, and WP.29 Regulatory Project | Review of Regulations for Applicability to ADS Vehicles |
| Click here to view the full document file |
| Status report on e-Trailer discussions |
| Reference Number: GRVA-24-39 |
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The e-Trailer Industry Group reports on discussions regarding electrically propelled and recuperating trailers. ISO 11992-2 Edition 4 is not safely implementable due to incompatibility with current UN regulations, missing PGNs, and risks of malfunction. ISO/TC 22/SC 31/WG 4 launched Edition 5, targeting publication in early 2027. Amendments to UN R13 and UN R100 are being developed in phases, with Phase 1 addressing trailer dynamo function and Phase 2 addressing e-axle trailers. Two workshops with Contracting Parties are planned to establish shared understanding and develop concrete parameter extensions for amending UN Regulations. |
| Submitted by: CLCCR, CLEPA, and OICA |
| Meeting Sessions: 24th GRVA session (19-23 Jan) |
| Document date: 21 Jan 26 |
| Relevant to: UN Regulation No. 13 | Heavy-Duty Vehicle Braking and WP.29 Regulatory Project | Trailer-axle energy and propulsion |
| Click here to view the full document file |
| Proposal to amend Regulations under GRVA for application to ADS vehicles |
| Reference Number: GRVA/2026/6 |
| Meeting Sessions: 24th GRVA session (19-23 Jan) |
| Document date: 07 Nov 25 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 13 | Heavy-Duty Vehicle Braking, UN Regulation No. 89 | Speed Limitation Devices, UN Regulation No. 90 | Replacement Brake Linings, Discs, and Drums, UN Regulation No. 131 | Advanced Emergency Braking Systems, UN Regulation No. 130 | Lane Departure Warning Systems, UN Regulation No. 140 | Electronic Stability Control Systems, UN Regulation No. 178 | Emergency Lane-Keeping Systems, UN Regulation No. 139 | Brake Assist Systems, UN Regulation No. 152 | Automatic Emergency Braking for M1/N1 vehicles, UN Regulation No. 157 | Automated Lane-Keeping Systems (ALKS), UN Regulation No. 171 | Driver-Control Assistance Systems (DCAS), and WP.29 Regulatory Project | Review of Regulations for Applicability to ADS Vehicles |
| Click here to view the full document file |
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| 8. (c) | Clarifications |