ISO INTERNATIONAL STANDARD 13472-1 Second edition 2022-01 Acoustics Measurement of sound absorption properties of road surfaces in situ - Part 1: Extended surface method Acoustique - Mesurage in situ des propriétés d'absorption acoustiquedes revétements de chaussées Partie 1: Méthodede la surface étendue Reference number IS0 13472-1:2022(E) ISO @IS02022 IS0 13472-1:2022(E) COPYRIGHT PROTECTED DOCUMENT @ISO2022 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, withoutpriorwrittenpermission.Permission can berequestedfrom eitherIso at theaddress below orIso'smemberbodyinthecountryoftherequester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2022 - All rights reserved