GAR | WP.29/2025/29

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Document Title	UN R168: Proposal for Supplement 1
Reference Number	WP.29/2025/29
Date	23 Dec 2024
Summary	Proposal to: Clarify the need for 3-phase and 4-phase analysis of test data depending on the fuel type of the engine (petrol or diesel) Clarify and align the provision of PEMS concentration and emission correction with UN Regulations as common provision Amend the scope to allow type approval of vehicles that previously were only within the scope as an extension based on their reference mass.
Rulemaking Area(s)	UN R168 RDE
Regulatory Impact	Original text \| Supplement 1
Proposal Status	Adopted by WP.29
Meeting(s)	WP.29 \| Session 195 \| 3-7 Mar 4.9.12. Proposal for Supplement 1 to UN Regulations No. 168 (Real Driving Emissions)
Related Documents
	GRPE/2024/20		UN R168: Proposal for Supplement 1 to 00 series of amendments (superseded)
	GRPE-91-09/Rev.1		UN R168: Proposal for amendment (superseded)
	GRPE-91-15/Rev.1		UN R168: Proposal for a new Supplement (superseded)
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