ISO INTERNATIONAL STANDARD 3095 Third edition 2013-08-01 Acoustics Railway applications Measurement of noise emitted by railbound vehicles Acoustique-Applications ferroviaires—Mesurage du bruit émis parles vehicules circulantsurrails Reference number IS0 3095:2013(E) ISO IS02013 IS0 3095:2013(E) COPYRIGHT PROTECTED DOCUMENT @IS02013 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland i @ IS0 2013 - All rights reserved IS0 3095:2013(E) Contents Page Foreword ..V Introduction. ..vi 1 Scope. 2 Normative references 3 Terms and definitions 4 Instrumentation and calibration. ..5 4.1 Instrumentation. .5 4.2 Calibration .5 5 Stationary test. .5 5.1 General. .5 5.2 Environmental conditions. 5.3 Track conditions .6 5.4 Vehicle conditions .6 5.5 Measurement positions 7 5.6 Measured quantities ..8 5.7 Test procedure. 5.8 Data processing .9 6 Constant speed test .10 6.1 Environmental conditions .10 6.2 Track conditions .11 6.3 Vehicle conditions ..13 6.4 Measurement positions ..16 6.5 Measured quantities. ..17 6.6 Test procedure. .17 6.7 Data processing 20 7 Acceleration test from standstill .21 7.1 General 21 7.2 Environmental conditions 21 7.3 Track conditions 22 7.4 Vehicle conditions 22 7.5 Maximum level method .23 7.6 Averaged level method. 25 8 Braking test .26 8.1 Environmental conditions. 26 8.2 Track conditions. 27 8.3 Vehicle conditions.. 27 8.4 Measurement positions 27 8.5 Measurement quantity 28 8.6 Test procedure. .28 8.7 Data processing 28 9 Quality of the measurements .29 9.1 Deviations from the requirements. 29 9.2 Measurement tolerances. 29 9.3 Measurement spread. .29 9.4 Measurement uncertainties. .29 10 Test report .29 Annex A (normative) Method to characterize the impulsive character of the noise ..31 Annex B (normative) Tests at constant speed - - Special cases. ..32 Annex C (normative) Method to assess acceptable small deviations from acoustic rail @ IS0 2013 - All rights reserved iii