ISO INTERNATIONAL STANDARD 8349 First edition 2002-04-01 Road yehicles Measurement of road surface friction Vehicules routiers Mesurage du coefficient d'adhérance Reference number ISO 8349:2002(E) ISO @ ISO 2002 by IHS under lic ted without license from IHS Not for Resale ISO8349:2002(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 shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading 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 parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by isO member bodies. In the unlikely event @ ISO2002 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's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 4122 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.ch Printed in Switzerland @ISO 2002 -All rights reserved ermittedwithoutlicense from IHS Not for Resale ISO 8349:2002(E) Contents Page Foreword.. .iv Introduction 1 Scope. 2 Normative references. Terms and definitions . 4 Summary of test methods.. 5 Pavement characteristics and surface conditions... .3 6 Constant-speed, transient braking force method ... 7 Constant-speed, constant-braking slip method... .10 8 Constant-speed, fixed-braking slip method... .16 Annex A (normative) Reference tyre specifications. ..22 Annex B (normative) Calibration method. .27 Annex C (informative) Measurement on wet surfaces ...28 Bibliography. .29 CyrghtIntenagaanrdadaled ili icense from IHS Not for Resale