GAR | GRVA-23-11/Rev.2

Document Title	UN R13: Proposal for amendments
Reference Number	GRVA-23-11/Rev.2
Date	25 Sep 2025
Summary	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”.
Source(s)	CLCCR, CLEPA, and OICA
Rulemaking Area(s)	UN R13 Heavy-Duty Braking
Proposal Status	Superseded
Meeting(s)	GRVA \| Session 23 \| 22-25 Sep 2025 8. (c) Clarifications
Related Documents
	GRVA/2025/15	UN R13: Proposal for amendments \| Superseded	change status?
	GRVA-21-12	UN R13: Proposal to amend document GRVA/2025/15 \| Superseded	change status?
	GRVA-22-26	UN R13: Proposal for amendments to document GRVA/2025/15 \| Superseded	change status?
	GRVA-23-41	e-Axles and e-Trailers: Supporting information
	WP.29/2026/6	UN R13: Proposal for a Supplement 2 to the 15 series of amendments \| Formal WP.29 review	supersede?
	WP.29/2026/11	UN R13: Proposal for a Supplement 3 to the 14 series of amendments \| Formal WP.29 review	supersede?
	WP.29/2026/12	UN R13: Proposal for a Supplement 6 to the 13 series of amendments \| Formal WP.29 review	supersede?
	WP.29/2026/13	UN R13: Proposal for a Supplement 8 to the 12 series of amendments \| Formal WP.29 review	supersede?
Downloads
UNECE server	.pdf format	.docx format
GAR server	.pdf format	.docx format
Japan does not support due to concern that trailer might drive itself. Germany cannot support in same line as Japan. Wording and definitions could be problematic in related to automation. Want to consider, including work being done on DCAS. OICA: thought para. 1.2.6. was clear on propulsion. Will come back in January. Rev.2 resolved the concerns enough to enable recommendation of the proposal to WP.29 for its March session subject to a final review in January GRVA.