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GRBP-73-17

UN R51: Proposal to amend the 03 series of amendments

Source(s)

Date

21 Jan 2021

Status

Informal GR review

Subject

UN R51 Vehicle Noise

Meeting(s)

GRBP | Session 73 | 26-29 Jan 2021

Agenda item 3. UN Regulation No. 51 (Noise of M and N categories of vehicles)

Measurement Uncertainties informal group proposal to clarify the text and to amend:

Annex 3, Paragraph 1.4. to delete determination of the vehicle speed by independent speed measuring devices
Annex 3, Paragraph 1.5. to clarify that no determination of the wind speed is needed for indoor testing
Annex 3, Paragraph 2.1.3. to clarify and differentiate between indoor and outdoor testing
Annex 3, Paragraph 2.1.3.1.2. to clarify the temperature range for indoor facilities.
Annex 3, Paragraph 2.1.3.2.2. to clarify the temperature range for outdoor facilities.

Downloads

UNECE server

Related documents

Excerpts from session reports

GRBP | Session 73 | 26-29 Jan 2021

8. The experts from IWG MU also presented a draft reference document with a general approach to estimate measurement uncertainties (GRBP-73-15) and draft amendments to the 03 series of amendments to UN Regulation No. 51 (GRBP-73-17).