ISO/TR TECHNICAL REPORT 21724-1 First edition 2020-07 Intelligent transport systems Common Transport Service Account Systems - Part 1: Framework and use cases Partie1:Cadreetcas d'utilisation Referencenumber ISO/TR21724-1:2020(E) ISO @IS02020 IS0/TR21724-1:2020(E) COPYRIGHTPROTECTEDDOCUMENT IS02020 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, without prior written permission.Permission can be requested from either Iso at the address below orISo's member body in the country of the requester. 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 2020- All rights reserved