| Park lock device approval |
| Reference Number: GRVA-23-07/Rev.2 |
| Submitted by: CLEPA and OICA |
| Meeting Sessions: 23rd GRVA session (22-25 Sep 2025) |
| Document date: 25 Sep 25 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 13 | Heavy-Duty Vehicle Braking and UN Regulation No. 13-H | Light-Duty Vehicle Braking |
| Click here to view the full document file |
| UN R13: Proposal for amendments |
| Reference Number: GRVA-23-11/Rev.2 |
|
Proposal to establish definitions for “e-axle”, “e-axle trailer” and “dynamo function” and to establish provisions for the approval of e-axle trailers with regard to their “dynamo function”. |
| Submitted by: CLCCR, CLEPA, and OICA |
| Meeting Sessions: 23rd GRVA session (22-25 Sep 2025) |
| Document date: 25 Sep 25 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 13 | Heavy-Duty Vehicle Braking |
| Click here to view the full document file |
| UN R13: Proposal to amend document GRVA/2025/39 |
| Reference Number: GRVA-23-14 |
|
Proposal from the FADS informal group to amend its proposal to enable the application of UN R13 to automated vehicles, including those without manual controls. |
| Meeting Sessions: 23rd GRVA session (22-25 Sep 2025) |
| Document date: 18 Sep 25 |
| Relevant to: UN Regulation No. 13 | Heavy-Duty Vehicle Braking and WP.29 Regulatory Project | Review of Regulations for Applicability to ADS Vehicles |
| Click here to view the full document file |
| UN R13 and 13-H: Proposal to amend documents GRVA/2025/43 and 44 |
| Reference Number: GRVA-23-18/Rev.1 |
|
Proposal from OICA, CLEPA, and CITA to amend CITA’s proposal to enable real-time reading of electrical transmission brake demand values via an electronic vehicle interface and an off-board electronic device during periodical technical inspections, including a 24-month transitional period. |
| Submitted by: CITA, CLEPA, and OICA |
| Meeting Sessions: 23rd GRVA session (22-25 Sep 2025) |
| Document date: 25 Sep 25 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 13 | Heavy-Duty Vehicle Braking and UN Regulation No. 13-H | Light-Duty Vehicle Braking |
| Click here to view the full document file |
| e-Axles and e-Trailers: Supporting information |
| Reference Number: GRVA-23-41 |
|
This document proposes amendments to UN Regulation 13 for trailers with dynamo function, superseding GRVA-22-26, GRVA-2025-15, and GRVA-21-12. The dynamo function converts vehicle kinetic energy into electrical energy without affecting braking system forces and is limited to trailers of category O2, O3, and O4 pending further development. Maximum retardation power limits are 22 kW for O3/O4 trailers and 2 kW for O2 trailers, measured using specified methods. Requirements include wheel locking prevention with braking rate not exceeding 0.04 per wheel, functional safety assessment per Annex 18, and demonstration that anti-lock and stability control systems comply when dynamo function is enabled. The dynamo function shall not be used during brake application testing. Administrative amendments update Annexes 2, 4, 5, 10, 19, 20, and 21 to reference e-axles and dynamo functions. |
| Submitted by: CLCCR, CLEPA, and OICA |
| Meeting Sessions: 23rd GRVA session (22-25 Sep 2025) |
| Document date: 25 Sep 25 |
| 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 |
| UN R13: Secondary brake test procedure |
| Reference Number: GRVA-23-42 |
| Submitted by: OICA |
| Meeting Sessions: 23rd GRVA session (22-25 Sep 2025) |
| Document date: 24 Sep 25 |
| Relevant to: UN Regulation No. 13 | Heavy-Duty Vehicle Braking |
| Click here to view the full document file |
| UN R13: Proposal for amendments |
| Reference Number: GRVA/2025/39 |
|
Proposal from the FADS informal group to introduce amendments to enable the application of UN R13 to automated vehicles, including those without manual controls. |
| Meeting Sessions: 23rd GRVA session (22-25 Sep 2025) |
| Document date: 09 Jul 25 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 13 | Heavy-Duty Vehicle Braking and WP.29 Regulatory Project | Review of Regulations for Applicability to ADS Vehicles |
| Click here to view the full document file |
| UN R13: Proposal for Supplement 1 to the 14 series of amendments |
| Reference Number: GRVA/2025/43 |
|
Proposal to enable real-time reading of electrical transmission brake demand values via an OBD connector and scan tool during periodical technical inspections. |
| Submitted by: CITA |
| Meeting Sessions: 23rd GRVA session (22-25 Sep 2025) |
| Document date: 09 Jul 25 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 13 | Heavy-Duty Vehicle Braking |
| Click here to view the full document file |
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