ISO/TS TECHNICAL SPECIFICATION 17426 Firstedition 2016-03-15 Intelligent transport systems Cooperative systems Contextual speeds Systemes intelligents de transport-Systemes cooperatifs-Vitesses contextuelles Reference number ISO/TS17426:2016(E) ISO International Organization for Standardization =ZHEJIANG INST OF STANDARDIZATION C15956617 @IS02016 vided by IHS under Not for Resale, 2016/4/26 03:09:45 itted without license from IHS IS0/TS 17426:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2016, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Intenatinair PrganizationforStandardization see-ZHEJIANG INSTOF STANDARDIZARoISQ6-All rights reserved Not for Resale, 2016/4/26 03:09:45 etworking permitted without license from IHS IS0/TS 17426:2016(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. .1 2 Conformance 3 Normative references 4 Terms and definitions ..2 5 Symbols and abbreviated terms 3 6 Contextual Speeds: Architecture 7 Contextual speeds: Use cases 7.1 General. ..5 7.2 Use case 1: Provision of mandatory speed limit information into vehicle - for driver awareness purposes ..6 7.3 Use case 2 - Provision of advisory speed information into vehicle - for driver awarenesspurposes .10 8 Contextual speeds: Roles and responsibilities .14 8.1 Scenarios for contextual speeds .14 8.2 System operation roles in scenario 7 .15 8.3 Possible actors in the Contextual Speed Information Service ..15 9 Contextual speeds: Characteristics. ..16 10 Contextual speeds: General service requirements ..16 11 Contextual speeds: Communication requirements ..17 11.1 General .17 11.2 General communication requirements .18 11.2.1 General .18 11.2.2 ITS-S application processes of the Contextual Speed Application ..18 11.2.3 Flowtypes of theContextual Speed Application .18 11.2.4 Flow Type 1 of the Contextual Speed Application .19 11.2.5 Flow Type 2 of the Contextual Speed Application .19 11.2.6 FlowType3of theContextual Speed Application .20 11.2.7 Sources and Sink ITS stations of the Flow Types. 21 11.2.8 Other general communication requirements .21 11.3 Application specific data element requirements. 21 Annex A (normative) Contextual speeds: IVI Profile (Definition of CSM) ..23 Bibliography .29 iii thout license from IHS