ISO INTERNATIONAL STANDARD 3853 Second edition 1994-09-15 Road vehicles Towing vehicle coupling device to tow caravans or light trailers Mechanical strength test Véhicules routiers -Dispositifs d'attelage montés surlesvehicules tractantdes caravanesoudesremorqueslégeres--Essaiderésistance mécanique ISO Reference number ISO3853:1994(E) Copyright International Organization for Standardization No reproductio Not for Resale ISO 3853:1994(E) Contents Page 1 Scope 2 Normative references 3 Definitions 4 Symbols 2 5 General conditions 2 6 Strength test for coupling device 3 Specific conditions for different types of coupling device 5 7 8 Strength criteria 5 9 Weldedtowing device 10 Marking ISO1994 Al 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 the publisher. International Organization for Standardization CasePostale56CH-1211Geneve20·Switzerland Printed in Switzerland Copyright Intermational Organization for Standardization Provided by IHS unde se from IHS Not for Resale @iSO ISO3853:1994(E) Foreword IsO (the International Organization for Standardization) is a worldwide of preparing International Standards is normally carried out through IsO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with IsO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (lEC)onallmattersof electrotechnicalstandardization. Draft international Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International a vote. International Standard ISO 3853 was prepared by Technical Committee ISO/TC 22， Road vehicles, Subcommittee SC 4, Caravans and light trailers. This second edition cancels and replaces the first edition (ISO 3853:1977), of which it constitutes a technical revision. illi CopyrightInternational Oorganization for Standardization ed without license from IHS Not for Resale