| Report of GRBP on its 75th (February 2022) session |
| Reference Number: GRBP/73 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 04 Mar 22 |
| Click here to view the full document file |
| GRBP: Updated annotated provisional agenda for the 75th (February 2022) session |
| Reference Number: GRBP-75-01 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 07 Feb 22 |
| Click here to view the full document file |
| Proposal for amendment to Regulations No. 51, 117, 138 |
| Reference Number: GRBP-75-02/Rev.1 |
| Submitted by: ISO |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 27 Jan 22 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions, UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance, and UN Regulation No. 138 | Quiet Road Transport Vehicles |
| Click here to view the full document file |
| ISO 10844 : 2021 Technical changes |
| Reference Number: GRBP-75-02/Rev.1/Add.1 |
| Submitted by: ISO |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 02 Feb 22 |
| Click here to view the full document file |
| UN R138: Background noise criteria - ISO 16254 Technical Measurement Development |
| Reference Number: GRBP-75-03 |
|
Presentation by ISO TC43/SC1/WG42 |
| Submitted by: ISO |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) and 1st TFQRTV session (20 May 2022) |
| Document date: 22 Jan 22 |
| Relevant to: UN Regulation No. 138 | Quiet Road Transport Vehicles |
| Click here to view the full document file |
| UN R51: Proposal for transitional provisions for Supplements 7 and 8 to 03 series of amendments |
| Reference Number: GRBP-75-04/Rev.1 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 25 Jan 22 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |
| UN R51: IWG Measurement Uncertainty status report |
| Reference Number: GRBP-75-05 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 25 Jan 22 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions and UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R 51: IWG Measurement Uncertainties - Revised Terms of Reference |
| Reference Number: GRBP-75-06/Rev.1 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 25 Jan 22 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions and UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Measurement Uncertainties: Proposal for amendment to Document of Reference |
| Reference Number: GRBP-75-07 |
|
Text prepared by the experts of the Informal Working group on Measurement Uncertainties (IWB MU) in order to introduce a general guideline. |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 26 Jan 22 |
| Relevant to: UN Regulation No. 138 | Quiet Road Transport Vehicles |
| Click here to view the full document file |
| RE3.: How to handle measurement uncertainties |
| Reference Number: GRBP-75-08 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 25 Jan 22 |
| Relevant to: United Nations Agreement | RE3 Construction of Vehicles |
| Click here to view the full document file |
| Studded Tyres task force: Status report to the 75th GRBP session |
| Reference Number: GRBP-75-09 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 25 Jan 22 |
| Relevant to: UN Regulation No. 164 | Type Approval of Studded Tyres |
| Click here to view the full document file |
| UN R141: proposal for amendments to Supplement 2 to the 01 series of amendments |
| Reference Number: GRBP-75-10 |
|
Text prepared by the Task Force on Tyre Pressure Monitoring System and Tyre Installation (TF TPMSTI) with the aim to implement the requirements for a Tyre Pressure Refill System (TPRS) and a Central Tyre Inflation System (CTIS) |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 26 Jan 22 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 141 | Tyre Pressure Monitoring Systems |
| Click here to view the full document file |
| UN R141: TF TPMSTI Status report |
| Reference Number: GRBP-75-11 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 26 Jan 22 |
| Relevant to: UN Regulation No. 141 | Tyre Pressure Monitoring Systems and UN Regulation No. 142 | Tyre Installation |
| Click here to view the full document file |
| UN R Reversing Alarm: TF RWS Status report |
| Reference Number: GRBP-75-12 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 26 Jan 22 |
| Relevant to: UN Regulation No. 165 | Audible Reversing Warning Systems |
| Click here to view the full document file |
| UN R Reversing Alarm: Proposal for amendments |
| Reference Number: GRBP-75-13 |
|
Proposal for amendments to ECE/TRANS/WP.29/GRBP/2022/5 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 26 Jan 22 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 165 | Audible Reversing Warning Systems |
| Click here to view the full document file |
| UN R109: Proposal for amendments to the 01 series of amendments |
| Reference Number: GRBP-75-14 |
|
Propose a new scheme of approval for Retreaded snow tyres for use in severe snow conditions |
| Submitted by: BIPAVER, France, and Netherlands |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 29 Jan 22 |
| Document status: Informal GR review |
| Relevant to: UN Regulation No. 109 | Retreaded Tires for Commercial Vehicles |
| Click here to view the full document file |
| Whole Life Compliance: Proposal for a Framework document |
| Reference Number: GRBP-75-15 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 29 Jan 22 |
| Click here to view the full document file |
| UN R51: Study on future sound limit values for type approval for vehicle categories M & N |
| Reference Number: GRBP-75-16 |
|
Study to evaluate the potential and the feasibility of limit value reductions in type approval and the translation to real road traffic conditions |
| Submitted by: ACEA |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 02 Feb 22 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |
| UN R51: Presentation of the study on futures sound limits values for type-approval for vehicles of category M & N |
| Reference Number: GRBP-75-17 |
| Submitted by: ACEA |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 02 Feb 22 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |
| UN R51: Tyre performance study report |
| Reference Number: GRBP-75-18 |
| A study to assess the influence of tyre performances (Rolling Resistance, Wet Grip, Noise level, …) on each other, in order to understand the improvement potential of noise emissions. |
| Submitted by: ACEA and OICA |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 02 Feb 22 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |
| UN R51: Presentation on the tyre performance study |
| Reference Number: GRBP-75-19/Rev.1 |
| Submitted by: OICA and UTAC |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 02 Feb 22 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |
| UN R51: Presentation on tyre performance study; extended program - tyre wear |
| Reference Number: GRBP-75-19/Rev.1-Add.1 |
| Submitted by: OICA |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 04 Feb 22 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |
| UN RT51: Tyre performance aggregation study |
| Reference Number: GRBP-75-20 |
|
Purpose of study was to specify any potential improvement or deterioration of noise performance in light of the other parameters and to provide the necessary information regarding the possible additional tightening of the limits, without undermining the overall balance that has to take into account also other performances. |
| Submitted by: OICA |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 02 Feb 22 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |
| UN R51: Presentation on the tyre performance aggregation study |
| Reference Number: GRBP-75-21/Rev.1 |
| Submitted by: OICA |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 02 Feb 22 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |
| UN R30: Comments on proposal to amend the definition of radial structure |
| Reference Number: GRBP-75-22 |
| Submitted by: ETRTO |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 02 Feb 22 |
| Relevant to: UN Regulation No. 30 | Pneumatic Tires |
| Click here to view the full document file |
| GRBP: Running order of the agenda for the 75th (February 2022) session |
| Reference Number: GRBP-75-23 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 03 Feb 22 |
| Click here to view the full document file |
| General information and WP.29 highlights |
| Reference Number: GRBP-75-24 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 03 Feb 22 |
| Click here to view the full document file |
| UN R117: Proposal for amendments |
| Reference Number: GRBP-75-25/Rev.1 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 03 Feb 22 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Presentation on the concept for addressing wet grip on worn tyre requirements for C2 and C3 tyres |
| Reference Number: GRBP-75-26/Rev.1 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 09 Feb 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: IWG Wet Grip on Worn Tyres - status report |
| Reference Number: GRBP-75-27 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 08 Feb 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: IWG WGWT - revised Terms of Reference |
| Reference Number: GRBP-75-28 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 08 Feb 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Proposal for amendments to the 03 series of amendments |
| Reference Number: GRBP-75-29 |
| Submitted by: EC |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 04 Feb 22 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R117: Presentation on evolution of tyre limits rolling resistance in new condition wet grip in new & worn condition |
| Reference Number: GRBP-75-30 |
| Submitted by: EC |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 04 Feb 22 |
| Relevant to: UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| UN R54: Proposal for Supplement 25 to the 00 series of amendments |
| Reference Number: GRBP-75-31/Rev.2 |
|
Proposal to avoid placing requirements in the Definitions section and to facilitate the text by making use of the definition of “service description” that was introduced by Supplement 24. |
| Submitted by: ETRTO |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 10 Feb 22 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 54 | Commercial Vehicle Tyres |
| Click here to view the full document file |
| UN R51: TF Vehicles Sound - Status report |
| Reference Number: GRBP-75-32 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) and 8th TFVS session (4 Apr 2022) |
| Document date: 08 Feb 22 |
| Relevant to: WP.29 Discussion Topic | Vehicle Sound and UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |
| UN R141: Proposal for a Supplement to 01 series of amendments |
| Reference Number: GRBP-75-33 |
|
Proposal to clarify some prescriptions and correct some text inconsistencies |
| Submitted by: CLEPA |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 08 Feb 22 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 141 | Tyre Pressure Monitoring Systems |
| Click here to view the full document file |
| UN R141: Presentation on the proposal for new Supplement to the 01 series of amendments |
| Reference Number: GRBP-75-34 |
| Submitted by: CLEPA |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 08 Feb 22 |
| Relevant to: UN Regulation No. 141 | Tyre Pressure Monitoring Systems |
| Click here to view the full document file |
| GRBP work program priorities |
| Reference Number: GRBP-75-35 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) and 1st TFQRTV session (20 May 2022) |
| Document date: 08 Feb 22 |
| Click here to view the full document file |
| UN R51: Proposal for amendment to Supplement 10 to the 03 series of amendment |
| Reference Number: GRBP-75-36 |
| Proposal by experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to improve the current wording for better clarification. The proposed changes for up to Supplement 6. |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 08 Feb 22 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |
| UN R51: Proposal for amendment to Supplement 9 to the 03 series of amendments |
| Reference Number: GRBP-75-37 |
|
Proposal by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to amend Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept. |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 08 Feb 22 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |
| UN R 51: IWG ASEP Status Report |
| Reference Number: GRBP-75-38 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 08 Feb 22 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |
| TF Tyres Abrasion (TF TA) - terms of reference |
| Reference Number: GRBP-75-39/Rev.1 |
|
TF TA will address the tyres abrasion performance by determining a standardized measurement method which will allow for the quantification of the microplastic emissions in the environment. At the same time, the TF TA will investigate the correlation between abrasion rate and durability and consider the inclusion of both abrasion rate and durability |
| Submitted by: EC and France |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 10 Feb 22 |
| Relevant to: WP.29 Regulatory Project | Tyre abrasion test method development |
| Click here to view the full document file |
| UN R51: Proposal for amendment to 03 series of amendments |
| Reference Number: GRBP-75-40 |
| Submitted by: China |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 08 Feb 22 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |
| UN R51: Presentation on proposal to amend 03 series of amendment |
| Reference Number: GRBP-75-41 |
|
Proposal to change the date of compliance for category N1 or for vehicle types of category M1 derived from N1 |
| Submitted by: China |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 08 Feb 22 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |
| UN R138: Proposal for draft Terms of Reference of IWG for revision |
| Reference Number: GRBP-75-42 |
| Submitted by: OICA |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) and 1st TFQRTV session (20 May 2022) |
| Document date: 10 Feb 22 |
| Relevant to: UN Regulation No. 138 | Quiet Road Transport Vehicles |
| Click here to view the full document file |
| GRBP: Draft list of main decisions from the 75th (February 2022) session |
| Reference Number: GRBP-75-43/Rev.1 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 12 Feb 22 |
| Click here to view the full document file |
| UN R138: Comments on the draft terms of Reference of IWG |
| Reference Number: GRBP-75-44 |
| Submitted by: China |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) and 1st TFQRTV session (20 May 2022) |
| Document date: 11 Feb 22 |
| Relevant to: UN Regulation No. 138 | Quiet Road Transport Vehicles |
| Click here to view the full document file |
| GRBP: Annotated provision agenda for the 75th (February 2022) session |
| Reference Number: GRBP/2022/1 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 18 Nov 21 |
| Click here to view the full document file |
| UN R141: Proposal for Supplement 2 to the 01 series of amendments |
| Reference Number: GRBP/2022/2 |
|
Proposal to introduce an alternative procedure for type approval of trailers (vehicles of categories O3 and O4) regarding their Tyre Pressure Monitoring System (TPMS), Tyre Pressure Refilling System (TPRS) and Central Tyre Inflation System (CTIS). |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 23 Nov 21 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 141 | Tyre Pressure Monitoring Systems |
| Click here to view the full document file |
| UN R51: Proposal for Supplement 10 to the 03 series of amendments |
| Reference Number: GRBP/2022/3 |
|
Text prepared by the experts from the Informal Working Group on Additional Sound Emission Provisions (IWG ASEP) in order to improve the current wording for better clarification. |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) and 17th ASEP II session (8 Feb 2022) |
| Document date: 23 Nov 21 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |
| UN R51: Proposal for Supplement 9 to 03 series of amendments |
| Reference Number: GRBP/2022/4 |
|
Proposal to introduce Real Driving Additional Sound Emission Provisions (RD-ASEP) as a preliminary test procedure for the purpose of collecting experience on the complete new test and evaluation concept. |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) and 17th ASEP II session (8 Feb 2022) |
| Document date: 26 Nov 21 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |
| Proposal for a new UN Regulation on reverse warning devices |
| Reference Number: GRBP/2022/5 |
|
Text, all tables and figures in this proposal have been prepared by the experts of the Task Force on Reverse Warning Sound (TF RWS) with the aim to draft a new UN Regulation concerning the approval of audible reverse warning devices and of motor vehicles with regard to their audible reverse warning signals. |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 23 Nov 21 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 165 | Audible Reversing Warning Systems |
| Click here to view the full document file |
| UN R54: Proposal for amendments |
| Reference Number: GRBP/2022/6 |
|
Proposal to remove an inconsistency in the marking provisions and extend production of the “regroovable” symbol or word “REGROOVABLE” beyond moudling (i.e., enable use of other technologies) for tyres that can be regrooved and to consolidate the calculation of reference dimensions with that provided in GTR 16 to allow measuring tyres with size designations listed in Annex 5 on rims whose width code differs from the measuring rim width code listed in the tables of Annex 5. |
| Submitted by: ETRTO |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 23 Nov 21 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 54 | Commercial Vehicle Tyres |
| Click here to view the full document file |
| UN R106: Proposal for amendments |
| Reference Number: GRBP/2022/7 |
|
Proposal to align the definitions of “diagonal” or “bias-ply” and “bias belted” tyre structures to the definitions given in UNvR30 and R75, to improve the text with regard to description of the composition of the size designation for metric tyres, and to resolve an apparent contradiction regarding the prefixes IF and VF. |
| Submitted by: ETRTO |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 23 Nov 21 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 106 | Tires for Agricultural Vehicles |
| Click here to view the full document file |
| UN R51: Proposal for Supplement 8 to 03 series of amendments |
| Reference Number: GRBP/2022/8 |
| Text prepared by the experts of the Informal Working Group on Measurement Uncertainties (IWG MU) in order to introduce measures to reduce variability. |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 23 Nov 21 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions |
| Click here to view the full document file |
| IWG MU: Proposal for a reference document; a general approach how to handle measurement uncertainty |
| Reference Number: GRBP/2022/9 |
|
Text prepared by the Informal Working Group on Measurement Uncertainties (IWG MU) as a document of reference. IWG MU was given the first task to amend UN Regulations Nos. 51 and No.117 to reduce measurement uncertainties |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) |
| Document date: 25 Nov 21 |
| Document status: Superseded |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions and UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
| Draft revised proposal for the handling of noise measurement uncertainties |
| Reference Number: GRBP/2022/9/Rev.1 |
| Meeting Sessions: 75th GRBP session (8-11 Feb 2022) and 20th TFMU session (29 Jun 2022) |
| Document date: 13 Apr 22 |
| Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions and UN Regulation No. 117 | Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance |
| Click here to view the full document file |
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