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Working Party on Noise (GRB)

This page provides access to the documents and meetings of the Noise.
No new meetings have been scheduled as of today.

The Working Party on Noise (GRB) prepares regulatory proposals for consideration by the World Forum/WP.29 relating to noise emissions and sound-based alerting systems. The GRB not only considers noise limits on motor vehicles, but also minimum sound requirements as vehicles have become quieter, posing concerns for vulnerable road users such as pedestrians and cyclists.

The GRB typically gathers more than 70 specialists in sound-related areas from government agencies and non-governmental organizations around the world. The GRB facilitates international cooperation in research and analysis and supervises informal expert working groups that develop technical requirements on vehicle noise.

GRB usually convenes during February and September of each year.

Tyres were added to GRB’s responsibilities in 2019 pursuant to the conversion of GRRF into GRVA to address automated driving. Click here to access the Working Party on Noise and Tyres (GRBP) page.

Click here for more information about the Working Party on Noise.

More documents
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Access all 613 GRB documents in the GAR database. (This may take some time.)


	France notified the United Nations of its application of UN Regulations Nos. 9, 42, 76, 88, and 92 on 11 March. These regulations will enter into force for France on 10 May 2020.	13 March	13 Mar 2020	2020-03-13 09:37:20 UTC
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Previous Meetings

Working Party on Noise | Session 69 | 23-25 Jan 2019

Working Party on Noise | Session 68 | 12-14 Sep 2018

View all 24 GRB sessions in the GAR database.

Groups reporting to GRB


TYREGTR	Informal Group on the Development of a Tyre GTR
TFRWS	Task Force on Reverse Warning Sound Issues
STD	Joint GRRF/GRB informal group on Special Tyre Definitions
REG58-QRTV	Informal Working Group for the Development of a UN Regulation on Quiet Road Transport Vehicles
R41WG	Informal Working Group on Motorcycle Noise Emissions (Regulation No. 41)
QRTV	Informal Group on Quiet Road Transport Vehicles
IWG-R51/R59	Informal Working Group on UN Regulations Nos. 51 and 59
GTRQRTV	Global Technical Regulation for Quiet Road Transport Vehicles Informal Group
EFV	Informal Group on Environmentally Friendly Vehicles
ASEP II	2nd Informal Working Group on Additional Sound Emission Provisions
ASEP	Informal Group on Additional Sound Emissions Provisions

Regulation:	UN Regulation No. 117 \| Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance
Document:	Revision 4 \| Amendment 2
Corresponds to:	02 series of amendments \| Supplement 10 (Entered into force on 11 Jan 2020)
Based on:	Document WP.29/2019/54 Proposal to correct a type in Annex 7- Appendix 2, Part 2, Paragraph 5 where the snow group index should read “1.00”, not “100” as appeared erroneously in the adopted text correct the text where the word “tyres” was inadvertently omitted from Paragraph 2.1. align the provisions of UN R117 regarding approval numbers and markings with the provisions of Schedule 4 to the revised 1958 Agreement.

Regulation:	UN Regulation No. 129 \| Enhanced Child Restraint Systems
Document:	Revision 4 \| Amendment 2
Corresponds to:	03 series of amendments \| Supplement 2 (Entered into force on 11 Jan 2020)
Based on:	Document WP.29/2019/40 Proposal to introduce new and modified labeling and to clarify packaging information to distinguish between forward-facing-only, rear-facing-only, and convertible CRS in order to reduce the risk of users misusing these enhanced CRS clarify that assessment of the DE plane only applies to rearward-facing Child Restraint Systems (CRS) in UN Regulation No. 44 and therefore does not apply to forward-facing child restraints that maintain structure of the child restraint behind the head of the dummy specify the dimensions of the approval number update i-Size universal ISOFIX, Specific Vehicle ISOFIX, i-Size Booster seat and Specific Vehicle Booster seat numbering (omitted in WP29-2018-045) rearrange the dimensions mark for arrangements of the approval mark where used in combination with the module mark change the 145 cm stature of the Specific Vehicle Booster seat to 150 cm stature as this is the correct upper limit, and clarify that Conformity of Production assessments shall be conducted under the same requirements as those of the original approval or, if applicable, the extension of the approval.

Regulation:	UN Regulation No. 129 \| Enhanced Child Restraint Systems
Document:	Revision 3 \| Amendment 4
Corresponds to:	02 series of amendments \| Supplement 5 (Entered into force on 11 Jan 2020)
Based on:	Document WP.29/2019/39 Proposal to introduce new and modified labeling and to clarify packaging information to distinguish between forward-facing-only, rear-facing-only, and convertible CRS in order to reduce the risk of users misusing these enhanced CRS clarify that assessment of the DE plane only applies to rearward-facing Child Restraint Systems (CRS) in UN Regulation No. 44 and therefore does not apply to forward-facing child restraints that maintain structure of the child restraint behind the head of the dummy specify the dimensions of the approval number correct the term “Regulation No. 129-02” to “UN Regulation No. 129/02” change the 145 cm stature of the Specific Vehicle Booster seat to the 150 cm stature as this is the upper limit, and modify the approval markings for consistency between technical services and approval authorities and between the labels of products approved under the 02 and 03 series.

Regulation:	UN Regulation No. 129 \| Enhanced Child Restraint Systems
Document:	Revision 1 \| Amendment 7
Corresponds to:	01 series of amendments \| Supplement 6 (Entered into force on 11 Jan 2020)
Based on:	Document WP.29/2019/38 Proposal to introduce new and modified labeling and to clarify packaging information to distinguish between forward-facing-only, rear-facing-only, and convertible CRS in order to reduce the risk of users misusing these enhanced CRS, and clarify that assessment of the DE plane only applies to rearward-facing Child Restraint Systems (CRS) in UN Regulation No. 44 and therefore does not apply to forward-facing child restraints that maintain structure of the child restraint behind the head of the dummy.