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Document Title Possible amendments to the Consolidated Resolution on the Construction of Vehicles
Reference Number GRB-59-01
Date
17 Jan 2014
Summary Proposal by the WP.29 secretariat to consider amending the Consolidated Resolution to adhere with provisions of the UN Regulations concerning noise limits. Presently, the resolution (which provides a framework and general reference for UN Regulations) permits a 5 db(A) tolerance in measuring noise levels while the UN Regulations 51, 41 and 63 referred to in the resolution permit narrower margins of 1 db(A) or 3 db(A).
Rulemaking Area(s) RE3: Vehicle Construction, UN R51 Vehicle Noise, UN R41 Motorcycle Noise, and UN R63 Moped Noise
Meeting(s)
Downloads
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Excerpts from session reports related to this document
GRB | Session 59 | 28-30 Jan 2014

28. GRB considered document GRB-59-01 in which the secretariat proposed to correct the reference to Annex 3 of UN Regulation No. 41 in paragraph 8.8.2.1.2. of the Consolidated Resolution (R.E.3) as well as to draw the attention of the Working Party to the fact that the margin of 5 dB(A) defined in paragraph 8.8.2.2., in order to take into account the possible instrumental and measurement errors, substantially exceeds the respective margins of 1 or 3 dB(A) set out in Regulations No. 51, 41 and 63. The experts from France, Germany, Sweden, IMMA, ISO and OICA pointed out that the figure of 5 dB(A) in paragraph 8.8.2.2. takes into account the disturbances and scatter of measurements performed under real-life conditions, in uncertain acoustic environment (e.g. side of a road) and by untrained staff (e.g. road police), while the margin of 3 dB(A) is intended for laboratory conditions and trained staff. GRB decided to leave the figure of 5 dB(A) in paragraph 8.8.2.2. of R.E.3 unchanged.