GAR | GRPE-82-30

Regulation:	UN Regulation No. 131 \| Advanced Emergency Braking Systems
Document:	Revision 1 \| Amendment 3
Corresponds to:	01 series of amendments \| Supplement 3 (Entered into force on 24 Sep 2023)
Based on:	Document WP.29/2023/11 Proposal to increase the potential speed reduction during the collision warning phase and clarify the interpretation of “engine start/run cycle”.

Regulation:	UN Regulation No. 131 \| Advanced Emergency Braking Systems
Document:	Revision 2 \| Amendment 1
Corresponds to:	02 series of amendments \| Supplement 1 (Entered into force on 24 Sep 2023)
Based on:	Document WP.29/2023/12 Proposal to align provisions with corresponding provisions of UN R152 and to clarify the interpretation of the provisions on system robustness when applied to heavy duty vehicles.

Regulation:	UN Regulation No. 137 \| Restraint System in Frontal Impact
Document:	Revision 2
Corresponds to:	01 series of amendments \| Supplement 1 (Entered into force on 29 Dec 2018)
Corresponds to:	01 series of amendments \| Supplement 2 (Entered into force on 28 May 2019)
Corresponds to:	01 series of amendments \| Supplement 3 (Entered into force on 3 Jan 2021)
Corresponds to:	02 series of amendments (Entered into force on 9 Jun 2021)

PMP: Explanatory Note for Sub-23nm particle measurement procedure for HD Engines

Document GRPE-82-30

11 January 2021

82nd GRPE session (12-15 Jan 2021)

This explanatory note by IWG PMP, updates on the proposals for solid particle number (SPN) measurements for the type approval of heavy-duty engines. The explanatory note addresses (i) the changes to the current SPN23 methodology, (ii) the proposed changes for the second alternative option to extend the particle size detection range to 10 nm particles, (iii) the proposed changes to allow direct SPN sampling with fixed dilution ratio.

Status: GR information

82nd GRPE session (12-15 Jan 2021)

7. | Particle Measurement Programme (PMP)

38. The representative from the EC, Chair of the IWG on PMP, introduced GRPE-82-29-Rev.1 and GRPE-82-30, presenting a draft proposal for sub-23nm measurement procedure for heavy duty engines in the laboratory. He mentioned the intention of the IWG on PMP was to finalize the procedure and submit a document that could be used as a reference document for future use in regulatory texts. After considering different document types during the session, he declared this document would be proposed as a draft consolidated resolution in forthcoming sessions of GRPE.

Reference Number:	EVS-28-A03/Rev.2
Meeting Session(s):	28th EVS session (3-6 Sep)
Document date:	28 Jun 24
Regarding:	GTR No. 20 Electric Vehicle Safety

Reference Number:	TA-25-03
Submitted by:	JASIC
Meeting Session(s):	25th TA session (28 Jun)
Document date:	28 Jun 24
Regarding:	Tyre wear

Reference Number:	WP.29-193-20
Submitted by:	Canada, EC, OICA, and USA
Meeting Session(s):	193rd WP.29 session (24-28 Jun)
Document date:	27 Jun 24
Regarding:	Artificial Intelligence

Reference Number:	GRBP-TFAVRS-04-04/Rev.1
Meeting Session(s):	4th GRBP-TFAVRS session (19 Jun)
Document date:	27 Jun 24
Regarding:	UN R51 Vehicle Noise \| Regulation Screening for ADS

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