UN Regulation No. 51
Vehicle Noise Emissions

Uniform Provisions Concerning the Approval of Motor Vehicles having at least Four Wheels with regard to their Noise Emissions

Series of Amendments and Supplements
Revisions and Amendments
Forty-nine Contracting Parties
Related groups: ASEP, ASEP 2.0 DG, ASEP II, GRB, GRBP, IWG-R51/R59, and TFMU
Latest Documents
21 Jan 2021
UN R51: Proposal to amend the 03 series of amendments | GRBP-73-17
2021-01-21 2021-01-21
21 Jan 2021
Status report of the Sound Measurement Uncertainties informal working group | GRBP-73-14
2021-01-21 2021-01-21
21 Jan 2021
Revised terms of reference for the Sound Measurement Uncertainties informal group | GRBP-73-16
2021-01-21 2021-01-21
21 Jan 2021
General Approach to Estimate Sound Measurement Uncertainties | GRBP-73-15
2021-01-21 2021-01-21
21 Jan 2021
ETRTO Tyre Performance Study | GRBP-73-11
2021-01-21 2021-01-21
A total of 513 documents are available. See more
Upcoming Meetings
Task Force on Vehicle and Tyre Noise Measurement Uncertainties | Session 10 | 22 Apr
Task Force on Vehicle and Tyre Noise Measurement Uncertainties | Session 9 | 23 Feb
Working Party on Noise and Tyres | Session 73 | 26-29 Jan
2nd Informal Working Group on Additional Sound Emission Provisions | Drafting Group | 28 Jan