BS ISO 362-2:2009 BSl Standards Publication Measurement of noise emitted by accelerating road vehicles - Engineering method Part 2: L category bsi. ..making excellence a habit BS ISO 362-2:2009 BRITISH STANDARD Nationalforeword This British Standard is the UK implementation of ISO 362-2:2009.Together with BS ISO362-1:2007,it supersedes BS ISO 362:1998 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee EH/1/2, Transport noise. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @BSI2010 ISBN9780580556845 ICS 17.140.30; 43.020 Compliancewitha British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2010. Amendments issued sincepublication Date Text affected BS ISO 362-2:2009 ISO INTERNATIONAL STANDARD 362-2 First edition 2009-07-15 Measurement of noise emitted by accelerating road vehicles Engineering method- Part 2: L category Mesurage dubruit émis parlesvehiculesroutiers enacceleration Methoded'expertise Partie 2: Catégorie L Reference number ISO 362-2:2009(E) ISO @ISO2009 BS ISO 362-2:2009 ISO 362-2:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHTPROTECTEDDOCUMENT ISO 2009 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either Iso at the address below or ISO copyright office Case postale 56.CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ Is0 2009All rights reserved BSISO362-2:2009 ISO362-2:2009(E) Contents Page Foreword. iv Introduction 1 Scope 2 Normative references... 3 Terms and definitions. 4 Symbols and abbreviated terms .. 6 5 SpecificationoftheaccelerationforvehiclesofcategoryL3withPMR>25 5.1 General........ 5.2 Calculationofacceleration 5.3 Calculation of the target acceleration.... 5.4 Calculation of the reference acceleration.. 5.5 Partial power factor kp.... 6 Instrumentation.... 9 6.1 Instrumentsforacoustical measurement.... 6.2 Instrumentation forengineand vehiclespeed measurements.. 10 6.3 Meteorological instrumentation ....... 10 7 Acoustical environment,meteorological conditions and background noise... 10 7.1 Test site ...... 10 7.2 Meteorological conditions 7.3 Background noise.... 8 Test procedures. 12 8.1 Microphonepositions. 12 8.2 Conditionsofthevehicle 12 8.3 Operatingconditions..... 8.4 Measurement readingsand reportedvalues.. 16 8.5 Measurement uncertainty...... 17 9 Test report.... 18 AnnexA(informative)Technicalbackgroundfordevelopmentofvehiclenoisetestprocedure based on in-use operation in urban conditions ....... 19 AnnexB(informative)Measurementuncertainty-Frameworkforanalysisaccordingto ISO/IEC Guide 98.-3........ 25 AnnexC(informative)FlowchartoftheprocedureforcategoryL3withPMR>25.. ..28 AnnexD (informative)FlowchartforvehiclesofcategoryL3withPMR≤25.. ..29 Annex E (informative)Flowchart for vehicles of categories L4 and L5. AnnexF (informative)Indoortestoperation.... @ ISO 2009 - All rights reserved ili BS ISO 362-2:2009 ISO 362-2:2009(E) Foreword technical committees. Each member body interested in a subject for which a tech