GAR | WP.29/2026/12

Document Number WP.29/2026/12

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Document title	UN R13: Proposal for a Supplement 6 to the 13 series of amendments
Date	23 Dec 2025				Proposal to: Clarify that only one braking control (e.g., service braking control, parking brake control) shall be used for each test condition of the secondary braking effectiveness and permit the selection of the braking control based on the vehicle load condition, and Establish definitions for “e-axle”, "e-axle trailer" and “dynamo function” and provisions for the approval of e-axle trailers with regard to their “dynamo function”.

Status	Adopted by WP.29
Rulemaking area(s)	UN R13 Heavy-Duty Braking
Regulatory impact	13 series of amendments \| Supplement 6
Meeting(s)	WP.29 \| Session 198 \| 9-13 Mar Agenda item 4.7.3. UN R13: Proposal for a Supplement 6 to the 13 series of amendments
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	GRVA/2025/34		Proposal for amendments to UN R13 and 13-H on park lock device approval (Superseded)
	GRVA/2025/46/Rev.1		UN R13-H: Proposal for amendments (Superseded)
	GRVA-23-07/Rev.2		Park lock device approval (Superseded)
	GRVA-23-11/Rev.2		UN R13: Proposal for amendments (Superseded)
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