Proposal to allow the use of the test track as specified in ISO 10844:2021.

Proposal to allow the use of the test track as specified in ISO 10844:2021.

Proposal for a reference document concerning a general approach for how to handle measurement uncertainties under UN Regulations within the purview of GRBP.

Proposal to align the 08 series of amendments to UN Regulation No. 9 with standard 10844:2014 of the International Organization of Standardization (ISO).

Proposal to amend ECE/TRANS/WP.29/GRBP/2021/23

Proposal to align the 08 series of amendments to UN Regulation No. 9 with standard 10844:2014 of the International Organization of Standardization (ISO).

Proposal to introduce mandatory additional sound emission provisions (ASEP) tests and to correct inconsistencies in the ASEP exemption conditions for vehicles with variable gear ratios or automatic transmission with non-lockable gear ratios.

Proposal to introduce mandatory additional sound emission provisions (ASEP) testing.

Proposal to correct inconsistencies on the exemption conditions for the additional sound emission provisions (ASEP) for vehicles with variable gear ratios or automatic transmission with non-lockable gear ratios.

Proposal to correct an inconsistency in document GRB-68-22 (adopted along with GRB/2018/7 and submitted for consideration at the March 2019 WP.29 session as WP.29/2019/6) regarding the ASEP exemption conditions for vehicles with variable gear ratios or automatic transmission with non-lockable gear ratios.

Proposal to introduce ASEP requirements for L₄ and L₅ category vehicles with PMR > 50 W/kg. The proposal aligns ASEP for high powered L₄ and L₅ vehicles, used for passenger transport, with UN Regulation No 41.04 due to comparable sound emissions levels of L₄ and L₅ vehicles with the ones of L₃ vehicles and the possibility of applying similar measurement methods for sound emissions for those vehicle categories. This proposal is supported by the Commission study on enhanced sound requirements for mopeds, quads and replacement silencers of L-category vehicles which resulted in amendments to UN Regulation Nos 9, 63 and 92 (ref. document WP.29/2017/2).

Proposal to align ASEP for high powered L₄ and L₅ vehicles, used for passenger transport, is proposed in line with UN Regulation No 41.04 due to comparable sound emissions levels of L₄ and L₅ vehicles with the ones of L₃ vehicles and the possibility of applying similar measurement methods for sound emissions for those vehicle categories. This is also supported by the Commission study on enhanced sound requirements for mopeds, quads and replacement silencers of L-category vehicles which resulted in amendments to UN Regulation Nos 9, 63 and 92 (ref. document WP.29/2017/2).

Proposal for amendments to introduce ASEP requirements for L4 and L5 category vehicles with PMR > 50 W/kg.

Proposal for amendments to introduce ASEP requirements for L4 and L5 category vehicles with PMR > 50 W/kg.

Presentation in support of Germany’s proposal for amendments to UN R92 on non-original replacement exhaust silencing systems.

Proposal to align ASEP for high powered L4 and L5 vehicles, used for passenger transport, is proposed in line with UN Regulation No 41.04 due to comparable sound emissions levels of L4 and L5 vehicles with the ones of L3 vehicles and the possibility of applying similar measurement methods for sound emissions for those vehicle categories. This is also supported by the Commission study on enhanced sound requirements for mopeds, quads and replacement silencers of L-category vehicles which resulted in amendments to UN Regulation Nos 9, 63 and 92 (ref. document WP.29/2017/2).

Proposal to delete a description of the L₄ vehicle category (motorcycles with a side car) from Annex 3 to Regulation No. 41. These vehicles fall under the scope of UN R9, having been removed from the scope of UN R41 as of the 04 series of amendments.

Additional materials covering task force topics and possible time frame for EC proposal on Euro 5 sound limits.

Status report on the European Commission program to investigate the potential for new sound limits of L-category vehicles at Euro 5 step and make a justified proposal.

Proposal to clarify the text and align the provisions of UN R9 with other vehicle sound regulations, especially UN R41, pursuant to research conducted by the European Commission.

Presentation concerning the proposals to clarify and update the texts and to align their provisions and terms.

Based on the outcomes of a European Commission study, proposal to clarify the text and align its provisions with other vehicle sound regulations, especially UN R41.

Proposal to clarify that conditioning of a silencing system is necessary only in cases where exhaust gases come into contact with silencer fibrous materials.

Explanation of recommendations developed for the European Commission by LAT, TNO, Heinz Steven, and TÜV Nord for the improvement of the regulations with regard to additional sound emission provisions.

Based on the outcomes of a European Commission study, proposal to clarify the text and align its provisions with other vehicle sound regulations, especially UN R41.

UN R51 specifies that conditioning of a silencing system is necessary only in cases where exhaust gases come into contact with silencer fibrous materials. This proposal would apply the same concept in L category noise regulations.

Overview of discussions for the future development of vehicle noise regulations prepared by the GRB secretariat.

Table of potential areas for future GRB work prepared during an informal meeting held in Paris during 2-3 July 2015.

Proposal to specify that conditioning of exhaust or silencing systems is required only in cases where the fibrous materials are in contact with exhaust gases because there is no possibility for the dispersion of fibrous materials under any other condition.

Proposal to update the reference to the latest version of the ISO 10844 and to introduce transitional provisions for the shift of the test track requirements from ISO 10844: 1994 to ISO 10844: 2014.

The purpose of this proposal is to update the reference to the latest version of the ISO 10844 and to introduce transitional provisions for the shift of the test track requirements from ISO 10844: 1994 to ISO 10844: 2014. This proposal supersedes document GRB/2015/5.

The purpose of this proposal is to update the reference to the latest version of the ISO 10844 and to introduce transitional provisions for the shift of the test track requirements from ISO 10844: 1994 to ISO 10844: 2014.

This proposal would correct the reference to the latest version of ISO 10844 and introduce transitional provisions for shift of the test track from ISO 10844:1994 to ISO 10844:2011.

Notice of the European Union’s intention to accede to UN Regulation No. 41 and the possible accession to Regulations 9, 63, and 92. The EC requests GRB input before deciding whether to pursue a separate legislative process to establish new provisions for these related noise rules.

Text adopted by the Working Party on Noise (GRB) at its fifty-sixth session as a consolidated version of the Regulation and aligning the test methods with those introduced into Regulation No. 41.

Table prepared by OICA highlighting various elements in the consideration of noise in UN Regulation Nos. 9, 28, 41, 51, 59, 63, 92, and 117.

Proposal from IMMA to update the transition provisions of UN R9 in line with new recommendations by UNECE WP29.

This proposal of amendments to UN Regulation No. 9 consolidates earlier versions of UN Regulation No. 9 and aligns the test methods with those introduced into UN Regulation No. 41.

Overview of European Commission program to rework the regulatory environmental and safety framework for L-category vehicles.

This revised proposal of UN R9 from the IMMA contains the assimilation of the original regulations and their amendments and updates to take into consideration the revision of the test methods in UN R41.