UN Regulation No. 51 on noise emissions

E461644

United Nations Regulation type-approval regulation vehicle noise emission regulation

UN Regulation No. 51 on noise emissions is an international vehicle standard that sets limits and test procedures for the external noise produced by motor vehicles to reduce environmental noise pollution.

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Observed surface forms (1)

Surface form	Occurrences
UN Regulation No. 51	0

Statements (50)

Predicate	Object
instanceOf	United Nations Regulation ⓘ type-approval regulation ⓘ vehicle noise emission regulation ⓘ
addresses	noise from the exhaust system of vehicles ⓘ noise from the intake system of vehicles ⓘ noise from the powertrain of vehicles ⓘ noise from tyres in certain operating conditions ⓘ
alsoKnownAs	R51 NERFINISHED ⓘ UNECE Regulation No. 51 NERFINISHED ⓘ
appliesTo	buses ⓘ coaches ⓘ heavy commercial vehicles ⓘ light commercial vehicles ⓘ motor vehicles with at least four wheels ⓘ passenger cars ⓘ
concerns	A-weighted sound pressure levels ⓘ
defines	maximum permissible sound levels for motor vehicles ⓘ microphone positions for noise measurements ⓘ operating conditions for noise tests ⓘ requirements for additional sound reduction devices ⓘ requirements for replacement silencing systems ⓘ test procedures for measuring vehicle exterior noise ⓘ vehicle speeds and gear selection for noise tests ⓘ
goal	facilitation of international trade in motor vehicles ⓘ harmonization of vehicle noise limits among contracting parties ⓘ
hasRevision	UN Regulation No. 51.01 NERFINISHED ⓘ UN Regulation No. 51.02 NERFINISHED ⓘ UN Regulation No. 51.03 NERFINISHED ⓘ
implementedBy	national vehicle type-approval authorities ⓘ
includes	conformity of production requirements for noise ⓘ provisions on background noise levels during tests ⓘ provisions on instrumentation accuracy for noise tests ⓘ provisions on test track characteristics ⓘ type-approval procedures for vehicle noise ⓘ
jurisdiction	contracting parties to the UNECE 1958 Agreement ⓘ
latestSeriesOfAmendments	03 series of amendments ⓘ
legalEffect	type-approval prerequisite in contracting parties to the 1958 Agreement ⓘ
measurementUnit	dB(A) ⓘ decibel A-weighted ⓘ
partOf	1958 Agreement NERFINISHED ⓘ
purpose	to limit external noise produced by motor vehicles ⓘ to reduce environmental noise pollution from road traffic ⓘ
regulatingAuthority	UNECE World Forum for Harmonization of Vehicle Regulations NERFINISHED ⓘ United Nations Economic Commission for Europe NERFINISHED ⓘ
relatedTo	UN Regulation No. 117 on tyre rolling noise NERFINISHED ⓘ UN Regulation No. 59 on replacement silencing systems NERFINISHED ⓘ
requires	calibrated sound level meters ⓘ specific meteorological conditions during tests ⓘ standardized test track surface for noise measurements ⓘ
subject	external noise emissions of motor vehicles ⓘ

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

United Nations Regulations under the 1958 Agreement → contains → UN Regulation No. 51 on noise emissions ⓘ