ISO INTERNATIONAL STANDARD 21448 Firstedition 2022-06 RoadvehiclesSafetyoftheintended functionality Vehicules routiers-Sécurite de la fonction attendue Referencenumber IS0 21448:2022(E) ISO ISO 2022 IS0 21448:2022(E) COPYRIGHTPROTECTEDDOCUMENT 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 anyform or by anymeans, electronic or mechanical, including photocopying, orposting on theinternetoran intranet,withoutpriorwrittenpermission.Permissioncanberequestedfrom eitherIsoattheaddressbelow or ISO's member body in the country of the requester. ISO copyright office CP401 : 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