ISO INTERNATIONAL STANDARD 20471 First edition 2013-03-15 Corrected version 2013-06-01 High visibility clothing Test methods and requirements Vetements a haute visibilité - Méthodes d'essai et exigences Reference number IS0 20471:2013(E) ISO @ IS0 2013 IS0 20471:2013(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2013 All rights reserved. Unless otherwise specified, 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, without prior the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel. +41 22 749 01 11 Fax+41227490947 E-mail [email protected] Web www.iso.org Published in Switzerland .ii IS02013-Allrightsreserved IS0 20471:2013(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references ..1 3 Terms and definitions .2 4 Design ..3 4.1 Types and classes.. .3 4.2 Specific design requirements ..4 4.3 Size designation .9 5 Requirements for background material, non-fluorescent material and combined performance material. 10 5.1 Colour performance requirements of new material 10 5.2 Colour after Xenon test. .10 5.3 Colour fastness of background material and all non-fluorescent material layers after testexposure .11 5.4 Dimensional change of background material and non-fluorescent material 11 5.5 Mechanical properties for background material and non-fluorescent material. 12 5.6 Physiological performance Water vapour and thermal resistance 12 6 Photometric performance requirements for retroreflective material and combined performance material after physical exposure .12 6.1 Retroreflective performance requirements of new material ..12 6.2 Retroreflective performance requirements after test exposure ..13 7 Test methods. ..14 7.1 Sampling and conditioning. ..14 7.2 Determination of colour .14 7.3 Method of determination of retroreflective photometric performance ..14 7.4 Retroreflection after exposure ..15 7.5 Ageing ..15 8 Marking .16 9 Information supplied by the manufacturer .16 Annex A (informative) Information concerning risk situations .17 Annex B (normative) Positioning of bands of retroreflective material on jackets for industrial wash test only ..18 Annex C (normative) Method of measuring wet retroreflective performance ..19 Annex D (informative) Guidelines for the design of high visibility garments ..21 Bibliography .22 isn.2013..Allrightsreserved ii