GAR | GRVA-09-17

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)

UN R152: Proposal to amend the Peak Braking Coefficient reference

Document GRVA-09-17

29 January 2021

9th GRVA session (1-5 Feb 2021)

Argument for revising the PBC values used in the regulation based on technological progress in tyres and impact on road-friction parameters.

Submitted by CLEPA and OICA

9th GRVA session (1-5 Feb 2021)

7. | Advanced Emergency Braking Systems

89. The expert from OICA introduced GRVA-09-18 and mentioned GRVA-09-17 explaining an issue related to the PBC reference in UN Regulation No. 152. She explained that deceleration of nine m/s² were the basis for calculation of performance criteria and that therefore a PBC value of 0.9 was not sufficient. She mentioned a revised proposal contained in GRVA-09-18/Rev.1 (document not available) to be discussed until the next session of GRVA.

90. The expert from Germany supported the proposed way forward. The expert from Canada raised a study reservation. The experts from Korea and the European Commission supported the OICA proposal.

91. GRVA agreed to resume consideration of this item at its next session.

Reference Number:	A-LCA-SG2-11-01
Meeting Session(s):	11th A-LCA-SG2 session (27 Jun)
Document date:	27 Jun 24
Regarding:	LCA

Reference Number:	ADAS-33-04
Submitted by:	Sweden
Meeting Session(s):	33rd ADAS session (29-30 Jul)
Document date:	26 Jul 24
Regarding:	UN R171 DCAS

Reference Number:	ADS-04-01
Meeting Session(s):	4th ADS session (8-11 Oct)
Document date:	26 Jul 24
Regarding:	Automated Driving

Reference Number:	FADS-17-04
Meeting Session(s):	17th FADS session (19 Jul)
Document date:	26 Jul 24
Regarding:	Regulation Screening for ADS

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