GAR | TFMU-13

Meeting documents

IWG MU (Measurement Uncertainties): Reference document

Reference Number: GRBP-74-11

Meeting Sessions: 74th GRBP session (15-17 Sep 2021), 14th TFMU session (11 Oct 2021), and 13th TFMU session (13 Jul 2021)

Document date: 31 Aug 21

Document status: Informal GR review

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IWG MU (Measurement Uncertainties): Terms of Reference

Reference Number: GRBP-74-12

This revised document intended to present to amend 117 the timetable for the work related to Regulation No. 117 has been shifted with approximately 12 months for this part.
The aim of the IWG is to propose harmonized measures for evaluating systematic errors and random errors to improve the test procedures to reduce measurement uncertainties

Meeting Sessions: 74th GRBP session (15-17 Sep 2021) and 13th TFMU session (13 Jul 2021)

Document date: 31 Aug 21

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

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UN R51: Proposal to introduce a Temperature Correction for the Tyre Rolling Sound Component of Pass-by Tests

Reference Number: GRBP-74-13

IWG on Measurement Uncertainties identified the temperature behaviour of tyre rolling sound component as a contributor to the measurement uncertainty of pass-by noise tests. Since in UN Reg. No.117 a temperature correction of tyre rolling sound is already established the group investigated an adoption of the existing calculation procedure. Due to the different testing conditions in UN Reg. No.117, new scientific investigations and industry data in pass-by testing the group worked out a temperature correction, which is adopted to the requirements of UN Reg. No.51.

Meeting Sessions: 74th GRBP session (15-17 Sep 2021), 10th UNR51-DG session (21 Sep 2021), and 13th TFMU session (13 Jul 2021)

Document date: 03 Sep 21

Document status: Informal GR review

Relevant to

UN Regulation No. 51 | Vehicle Noise Emissions

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UN R51: Proposal for Supplement 7 to 03 series of amendments

Reference Number: GRBP/2021/22

Proposal from the Noise Measurement Uncertainties informal group to to reduce variability of measurements.

Meeting Sessions: 74th GRBP session (15-17 Sep 2021), 10th UNR51-DG session (21 Sep 2021), and 13th TFMU session (13 Jul 2021)

Document date: 01 Jul 21

Document status: Superseded

Relevant to

UN Regulation No. 51 | Vehicle Noise Emissions

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Agenda for the 13th Noise Measurement Uncertainties task force session

Reference Number: TFMU-13-01

Meeting Sessions: 13th TFMU session (13 Jul 2021)

Document date: 07 Jul 21

Relevant to

UN Regulation No. 51 | Vehicle Noise Emissions

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UN R51: Proposal for temperature correction in 01 series of amendments

Reference Number: TFMU-13-02/Rev.1

Meeting Sessions: 13th TFMU session (13 Jul 2021)

Document date: 13 Jul 21

Relevant to

UN Regulation No. 51 | Vehicle Noise Emissions

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Noise measurement uncertainties: Documents of Reference draft

Reference Number: TFMU-13-03

Meeting Sessions: 13th TFMU session (13 Jul 2021)

Document date: 13 Jul 21

Relevant to

UN Regulation No. 51 | Vehicle Noise Emissions

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UN R51: Remark on temperature correction

Reference Number: TFMU-13-04

Submitted by: ETRTO

Meeting Sessions: 13th TFMU session (13 Jul 2021)

Document date: 13 Jul 21

Relevant to

UN Regulation No. 51 | Vehicle Noise Emissions

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Draft report of the 13th Noise Measurement Uncertainties task force

Reference Number: TFMU-13-05

Meeting Sessions: 13th TFMU session (13 Jul 2021)

Document date: 22 Jul 21

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

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Noise Measurement Uncertainties task force report to GRBP

Reference Number: TFMU-13-06

Meeting Sessions: 13th TFMU session (13 Jul 2021)

Document date: 03 Sep 21

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

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31 Aug 2021	IWG MU (Measurement Uncertainties): Reference document	GRBP-74-11	2021-08-31
31 Aug 2021	IWG MU (Measurement Uncertainties): Terms of Reference	GRBP-74-12	2021-08-31
3 Sep 2021	UN R51: Proposal to introduce a Temperature Correction for the Tyre Rolling Sound Component of Pass-by Tests	GRBP-74-13	2021-09-03
1 Jul 2021	UN R51: Proposal for Supplement 7 to 03 series of amendments	GRBP/2021/22	2021-07-01
7 Jul 2021	Agenda for the 13th Noise Measurement Uncertainties task force session	TFMU-13-01	2021-07-07
13 Jul 2021	UN R51: Proposal for temperature correction in 01 series of amendments	TFMU-13-02/Rev.1	2021-07-13
13 Jul 2021	Noise measurement uncertainties: Documents of Reference draft	TFMU-13-03	2021-07-13
13 Jul 2021	UN R51: Remark on temperature correction (ETRTO)	TFMU-13-04	2021-07-13
22 Jul 2021	Draft report of the 13th Noise Measurement Uncertainties task force	TFMU-13-05	2021-07-22
3 Sep 2021	Noise Measurement Uncertainties task force report to GRBP	TFMU-13-06	2021-09-03