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Proposal for Supplement 2 to the 03 series of amendments to Regulation No. 51
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Reference Number: WP.29/2017/71
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Proposal of extensive clarifications to UN R51 by the Informal Group on Additional Sound Emission Provisions (ASEP) in order to provide more consistent and unambiguous specifications for test procedures. Explanations of the proposed changes are provided in document GRB-65-25.
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Meeting Sessions: 172nd WP.29 session (20-23
Jun 2017)
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Document date: 07 Apr 17
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Document status: Adopted text published
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Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions
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Adoption Vote
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This proposal (WP.29/2017/71) was adopted by the World Forum. Thirty-six Contracting Parties out of the 46 applying UN R51 were present for the vote by AC.1. Thirty-six voted in favor with zero against and zero abstaining.
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Click here to view the full document file
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Proposal for Supplement 3 to the 03 series of amendments to Regulation No. 51
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Reference Number: GRB/2017/5
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Proposal to - amend the scope to be design-neutral and reflect the driving situations covered by the Regulation;
- highlight that ASEP apply to vehicles and their electric sound enhancement systems such as the Audible Vehicle Alert System (AVAS) and silencers equipped with an active cancelling system
- update the “backfire” assessment procedure; and
- clarify the gear ratio anchor point in Annex 7 as defined via Annex 3
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Meeting Sessions: 66th GRB session (4-6
Sep 2017)
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Document date: 16 Jun 17
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Document status: Superseded
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Relevant to: UN Regulation No. 51 | Vehicle Noise Emissions
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Click here to view the full document file
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Documents 2026
3073 documents
10 May 2017
IMMA overview presentation of UN-R41.04 additional sound emission provisions (ASEP)
ASEP II-03-06
10 May 2017
CLEPA input for the 3rd ASEP informal group meeting
ASEP II-03-05
10 May 2017
Study of velocity x acceleration concept for ASEP
ASEP II-03-02
10 May 2017
Background and concerns from China on ASEP theory and test method
ASEP II-03-03
10 May 2017
ASEP and Off-cycle testing principles
ASEP II-03-04
10 May 2017
Proposal for Supplement 2 to the 03 series of amendments to Regulation No. 51 (GRB/2017/yy)
ASEP II-03-13
10 May 2017
Proposal for Supplement 2 to the 03 series of amendments to Regulation No. 51 (GRB/2017/yy/Rev.1)
ASEP II-03-14
11 May 2017
ASEP control range
ASEP II-03-07
11 May 2017
ASEP sound box
ASEP II-03-08
12 May 2017
ASEP informal group milestones
ASEP II-03-15
12 May 2017
ASEP informal group working draft proposal for Supplement 2 to the 03 series of amendments to Regulation No. 51 (GRB/2017/xx)
ASEP II-03-12
12 May 2017
ASEP informal group working draft proposal for Supplement 2 to the 03 series of amendments to Regulation No. 51: Revision 1 (GRB/2017/xx/Rev.1)
ASEP II-03-12
19 May 2017
Proposal for Supplement 2 to the 03 series of amendments to Regulation No. 51
WP.29/2017/71
21 Jun 2017
Proposal for supplement 6 to the 04 series of amendments to Regulation No. 41
GRB/2017/4
21 Jun 2017
Proposal for Supplement 3 to the 03 series of amendments to Regulation No. 51
GRB/2017/5
27 Jun 2017
Draft report of the first and second ASEP II informal group sessions
ASEP II-02-12/Rev.1
27 Jun 2017
GRB list of amendments to UN R51 03 series of amendments: Expert Group Meeting
ASEP II-03-09
27 Jun 2017
Additional mass relative to mro: Relative change of L urban
ASEP II-03-17
27 Jun 2017
ASEP informal group working draft proposal for Supplement 2 to the 03 series of amendments to Regulation No. 51
GRB/2017/xxx
27 Jun 2017
Revision of GRB-65-24
ASEP II-03-18
6 Jul 2017
ASEP 2007 databank
ASEP II-04-06
10 Jul 2017
ASEP alternative methods for indoor noise testing
ASEP II-04-07
10 Jul 2017
Draft ASEP II informal group report on the development of additional sound emission provisions under UN R51
ASEP II-04-08
10 Jul 2017
Draft status report to GRB of the ASEP II informal group
ASEP II-04-09
11 Jul 2017
IMMA presentation of UN-R41.04 additional sound emission provisions (ASEP)
ASEP II-04-12
Vehicle and Tyre Noise