1、 ISO 2012 Intelligent transport systems Traffic and travel information via transport protocol experts group, generation 1 (TPEG1) binary data format Part 8: Congestion and Travel Time application (TPEG1-CTT) Systmes intelligents de transport Informations sur le trafic et le tourisme via les donnes d
2、e format binaire du groupe dexperts du protocole de transport, gnration 1 (TPEG1) Partie 8: Application bouchons et temps de voyage (TPEG1-CTT) TECHNICAL SPECIFICATION ISO/TS 18234-8 First edition 10-01-2012 Reference number ISO/TS 18234-8:2012(E) ISO/TS 18234-8:2012(E) ii ISO 2012 All rights reserv
3、ed COPYRIGHT PROTECTED DOCUMENT ISO 2012 All 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 either ISO at the addres
4、s below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ISO/TS 18234-8:2012(E) ISO 2012 All rights reserved iii Contents Page Fore
5、word iv Introduction vi 1 Scope . 1 2 Conformance . 1 3 Normative references 1 4 Terms and definitions . 1 5 Abbreviated terms 3 6 Definitions . 5 6.1 General . 5 6.2 Message Management . 5 6.3 Locations - Abbreviation: Loc 5 7 CTT Application Overview 6 7.1 Introduction 6 7.2 TPEG-Message Concept .
6、 7 7.3 Elements of TPEG Congestion and Travel Time . 8 7.4 Message Management . 8 7.5 Status Description 9 7.6 Location Referencing . 9 8 CTT Container .10 8.1 Structure of CTT Message .10 8.2 CTT Application Component Frame 10 9 Message Management Container 11 9.1 Mandatory Elements .11 9.2 Date an
7、d Time Elements 11 9.3 Coding of Message Management Container 12 10 Status Container .13 10.1 Status Description .13 10.2 Coding of CTT Information Container13 11 TPEG CTT Tables 16 11.1 Congestion Type Table 16 11.2 Congestion Tendency Table 16 Annex A (informative) Conversion formulae 18 Bibliogra
8、phy .20 ISO/TS 18234-8:2012(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body intere
9、sted 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
10、Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the tec
11、hnical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. In other circumstances, particularly when there is an urgent market requirement for such documents, a technical committee
12、 may decide to publish other types of document: an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in an ISO working group and is accepted for publication if it is approved by more than 50 % of the members of the parent committee casting a vote; an IS
13、O Technical Specification (ISO/TS) represents an agreement between the members of a technical committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a vote. An ISO/PAS or ISO/TS is reviewed after three years in order to decide whether it will be co
14、nfirmed for a further three years, revised to become an International Standard, or withdrawn. If the ISO/PAS or ISO/TS is confirmed, it is reviewed again after a further three years, at which time it must either be transformed into an International Standard or be withdrawn. Attention is drawn to the
15、 possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO/TS 18234-8 was prepared by Technical Committee ISO/TC 204, Intelligent transport systems. ISO/TS 18234 consists of the fol
16、lowing parts, under the general title Intelligent transport systems Traffic and travel information via transport protocol experts group, generation 1 (TPEG1) binary data format: Part 1: Introduction, numbering and versions (TPEG1-INV) Part 2: Syntax, Semantics and Framing Structure (SSF) Part 3: Ser
17、vice and Network Information (SNI) application Part 4: Road Traffic Message (RTM) application Part 5: Public Transport Information (PTI) application Part 6: Location referencing applications Part 7: Parking Information (TPEG1-PKI) 1) Part 8: Congestion and travel time application (TPEG1-CTT) Part 9:
18、 Traffic event compact (TPEG1-TEC) 2) 1) To be published. 2) To be published. iv ISO 2012 All rights reserved ISO/TS 18234-8:2012(E) Part 10: Conditional access information (TPEG1-CAI) 3) Part 11: Location Referencing Container (TPEG1-LRC) 4) 3) To be published. 4) To be published. ISO 2012 All righ
19、ts reserved v ISO/TS 18234-8:2012(E) Introduction TPEG technology uses a byte-oriented stream format, which may be carried on almost any digital bearer with an appropriate adaptation layer. TPEG-messages are delivered from service providers to end-users, and are used to transfer application data fro
20、m the database of a service provider to a users equipment. This Technical Specification describes the Congestion and Travel Time application in detail. TPEG1-CTT is one of several applications required to provide a fully comprehensive traffic and travel information service, for example a service is
21、likely to need public transport information, parking information and weather information. These are or will be the subject of other TPEG-application specifications. TPEG1-CTT has been derived from earlier work, named “idio” via the FM data broadcasting system, DARC. The “idio” is the TTI service whi
22、ch was officially launched starting in 2001 all over South Korea. The TPEG1-CTT has become the most popular service of the many applications of DMB, after being tested and proven via both the terrestrial and satellite DMB (Digital Multimedia Broadcasting) networks. The Broadcast Management Committee
23、 of the European Broadcast Union (EBU) established the B/TPEG project group in autumn 1997 with the mandate to develop, as soon as possible, a new protocol for broadcasting traffic and travel-related information in the multimedia environment. The TPEG technology, its applications and service feature
24、s are designed to enable travel-related messages to be coded, decoded, filtered and understood by humans (visually and/or audibly in the users language) and by agent systems. One year later in December 1998, the B/TPEG group produced its first public specifications. Two documents were released. ISO/
25、TS 18234-2,TPEG-SSF, describes the syntax, semantics and framing structure which are used for all TPEG applications. ISO/TS 18234-4, TPEG-RTM describes the first application for Road Traffic Messages. ISO/TC 204/WG 10, established a project group comprising the members of B/TPEG and they have contin
26、ued the work concurrently since March 1999. Since then two further parts have been developed to make the initial complete set of four parts, enabling the implementation of a consistent service. ISO/TS 18234-3, TPEG-SNI describes the Service and Network Information Application, which is likely to be
27、used by all service implementations to ensure appropriate referencing from one service source to another. ISO/TS 18234-1, TPEG-INV, completed the work, by describing the other parts and their relationships; it also contains the application IDs used within the other parts. In April 2000, the B/TPEG g
28、roup released revised Parts 1 to 4, which had all been reviewed and updated in light of the initial implementation results. Thus, a consistent suite of specifications, ready for wide- scale implementation, was submitted to the ISO commenting process. In November 2001, after extensive response to the
29、 comments received and from many internally suggested improvements, all four parts were completed for the next stage: the Parallel Formal Vote. But a major step forward has been to develop the so-called TPEG-Loc location referencing method, which enables both map-based TPEG-decoders and non map-base
30、d ones to deliver either map-based location referencing or human readable information. ISO/TS 18234-6, TPEG-Loc, is now a separate specification and is used in association with the other parts of ISO/TS 18234 to provide comprehensive location referencing. Additionally, ISO/TS 18234-5, the Public Tra
31、nsport Information Application (TPEG-PTI) has been developed and been through the commenting process. This Technical Specification provides a full specification for the Congestion and Travel Time application. Today, traffic congestion has become a serious problem in urban areas. Some traffic congest
32、ion is considered to be caused by drivers who do not have access to traffic information. Therefore, timely provision of congestion and travel time messages to these drivers could decrease traffic congestion. TPEG Congestion and Travel Time Messages are designed to provide information to various kind
33、s of receivers using digital broadcasting and Internet technologies. A Congestion and Travel Time Message may be presented to the user in many different ways, including text, audio, or graphically using standard vi ISO 2012 All rights reserved ISO/TS 18234-8:2012(E) formats application which is desi
34、gned to allow the efficient and language independent delivery of road information directly from service provider to end-users. The information provided relates to event and some status information on the road network and on associated infrastructure affecting a road journey. For example, limited inf
35、ormation about abnormal operation of links in the network may be included, e.g. ferries, lifting-bridges. The term “application” is used in TPEG specifications to describe specific applications, such as in this case the Congestion and Travel Time application, which comprises three information contai
36、ners: the Message Management Container, the Application Event Container and the TPEG-Location Container. The first two Containers are fully described herein and the TPEG-Location Container is described in ISO/TS 18234-6. Each TPEG application (e.g. TPEG1-CTT) is assigned a unique number, called the
37、Application Identification (AID). An AID is defined whenever a new application is developed. The AID is used within the TPEG- Service and Network Information Application (ISO/TS 18234-3 to indicate how to process TPEG content and allows routing of data to an appropriate application decoder. AID = 00
38、04 is assigned to the TPEG-Congestion Travel Time Message application described in this Technical Specification. A hierarchical methodology has been developed to allow the creation of messages from a set of TPEG1- CTT tables, which are essentially word oriented and cover most needs. ISO 2012 All rig
39、hts reserved vii Intelligent transport systems Traffic and travel information via transport protocol experts group, generation 1 (TPEG1) binary data format Part 8: Congestion and Travel Time application (TPEG1-CTT) 1 Scope This Technical Specification establishes a method for delivering Congestion a
40、nd Travel Time Messages within a TPEG service. 2 Conformance The TPEG1-CTT has been tested and proven via both terrestrial and satellite Digital Multimedia Broadcasting (DMB) networks since 2006 in Korea. 3 Normative references The following referenced documents are indispensable for the application
41、 of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO/TS 18234-2, Traffic and Travel Information (TTI) TTI via Transport Protocol Expert Group (TPEG) data-streams Part 2:
42、Syntax, Semantics and Framing Structure (SSF) ISO/TS 18234-3, Traffic and Travel Information (TTI) TTI via Transport Protocol Expert Group (TPEG) data-streams Part 3: Service and Network Information (SNI) application 4 Terms and definitions For the purposes of this Technical Specification, the follo
43、wing terms and definitions apply. NOTE Definitions in this Technical Specification are in some cases derived from definitions found in the DATEX Data Dictionary (ENV 13106). TPEG-RTM is completely focused on delivering messages to end-users. For this key operational reason some definitions have a di
44、fferent meaning from that found in the DATEX Data Dictionary. These differences are noted in a note to the term. 4.1 cross reference information CRI pointer to one or more messages in the same, or another TPEG service 4.2 event description EVE part of a message describing an event, unplanned or plan
45、ned, affecting the road or transport network, or status information, including qualifiers and quantifiers NOTE This definition varies from the DATEX Data Dictionary definition (ENV 13106). EXAMPLE The transport network in the case of a ferry carrying vehicles between parts of the road network. TECHN
46、ICAL SPECIFICATION ISO/TS 18234-8:2012(E) ISO 2012 All rights reserved 1 ISO/TS 18234-8:2012(E) 4.3 location referencing method for referencing locations to facilitate the exchange of location related information between different systems NOTE See ISO/TS 18234-6 for full details of the location refe
47、rencing container explanations. 4.4 message collection of coherent information sent through an information channel which describes an event or a collection of related events, or status information and including message management information NOTE The latter is contained in the message header. 4.5 me
48、ssage expiry time MET date and time in accordance with ISO 8601 when the message should be deleted from all TPEG-decoders NOTE Used for message management purposes. 4.6 message generation time MGT date and time stamp in accordance with ISO 8601 originated at the actual time and point of message gene
49、ration NOTE Used for message management purposes. 4.7 message identifier MID unique identifier for a sequence of versions of one message relating to a particular event of a particular service component 4.8 position where an event has taken place in relation to the road NOTE The driving lanes are numbered according to the usual local practice, i.e. driving lane 1 is the lane nearest to the hard shoulder. In countries which drive on the left, driving lanes are hence numbered from left-to- right, and in coun
