CEN/TS 15531-5:2011

Public transport - Service interface for real-time information relating to public transport operations - Part 5: Functional service interfaces - Situation Exchange

The SIRI Situation Exchange service (SIRI-SX) allows the efficient exchange of data about situations caused by planned and unplanned incidents and events and is intended to support the use cases identified in Annex C. Situations are actual or potential perturbations to normal operation of a transport network. The SIRI-SX service uses the common SIRI communication framework and services which are described in CEN/TS 15531-1 and not repeated in this document.
The Situation Exchange service has a rich Situation model, allowing a structured description of all aspects of multimodal travel Situations, including cause, scope, effect and rules for distribution to an audience. The structured values enabling computer based distribution through a wide variety of channels, and the presentation of data in different formats for different device and different audiences. The Situation Exchange Service allows the exchange of incident and event information between, amongst others:
- Control centres;
- Operations staff;
- Public information systems;
- Alert systems and personalised alert systems;
- UTMC systems;
- Journey planners;
- AVMS (Automatic Vehicle Management Systems).
SIR-SX uses a network model based on the CEN Transmodel conceptual model for public transport networks, schedules and operations, along with the CEN Identification of Fixed Objects in Public Transport (IFOPT) model for describing physical transport interchanges.
The Situation Exchange service is envisaged as a 'back office' capture and exchange service that will feed other public facing travel information dissemination systems, in particular those using the TPEG format. Transport Protocol Expert Group (TPEG) is a European Broadcasting Union fostered standard for broadcasting travel data over Digital Assisted Broadcasting (DAB) radio and other channels. To this end, the SIRI-SX situation classification model has been harmonised as far as possible with that of TPEG and DATEX2 so that full interoperability can be achieved. Uses of structured elements from TPEG, for which translations already exist in most European languages, also facilitates human readability in different national languages. Maintaining and improving a harmonisation with TPEG will be a continuing objective. In addition to the TPEG exchangeable content, SIRI-SX messages contain additional structured information which allows them to be processed in additional ways.
Situation and computer systems and applications are typically distributed, that is information will be captured on one system and exchanged with others for dissemination and further processing. This means that a message design is needed that allows the management of the identity of distributed messages over time and across different systems, so that subsequent updates to a Situation can be reconciled by different systems over a network, and obsolete messages can be retired automatically. The SIRI-SX situation model is designed to support the distributed management of Situations.

Öffentlicher Verkehr - Diensteschnittstelle für den Echtzeitaustausch von Betriebsinformationen des ÖPNV (SIRI) - Teil 5: Funktionelle Serviceschnittstelle - Situativer Austausch

Service d'échanges de données temps réel pour le Transport en Commun - Partie 5: interfaces de service fonctionnel - Echanges de perturbation structurés (causes et conséquences détaillées)

Javni prevoz - Vmesnik za storitev informiranja v realnem času za potrebe delovanja javnega prevoza - 5. del: Vmesniki funkcijske storitve - Izmenjava podatkov o situaciji

Storitev izmenjave podatkov o situaciji SIRI (SIRI-SX) omogoča učinkovito izmenjavo podatkov o situacijah, ki jih povzročijo načrtovani in nenačrtovani incidenti in dogodki, ter je namenjena podpori primerov uporabe, identificiranih v dodatku C. Situacije so dejanske ali morebitne motnje normalnega delovanja transportnega omrežja. Storitev SIRISX uporablja skupni komunikacijski okvir SIRI in storitve, ki so opisane v CEN/TS 15531-1 in se v tem dokumentu ne ponavljajo. Storitev izmenjave podatkov o situaciji ima bogat model situacij, ki omogoča strukturiran opis vseh vidikov situacij multimodalnega prevoza, vključno z vzrokom, učinkom in pravili za distribucijo občinstvu. Strukturirane vrednosti omogočajo računalniško distribucijo prek različnih kanalov in predstavitev podatkov v različnih formatih za različne naprave in različna občinstva. Storitev izmenjave podatkov o situaciji omogoča izmenjavo informacij o incidentih in dogodkih tudi med: nadzornimi centri; operativnimi delavci; javnimi informacijskimi sistemi; alarmnimi sistemi in personaliziranimi alarmnimi sistemi; sistemi UTMC; načrtovalci poti; AVMS (avtomatskimi sistemi upravljanja vozil). SIRI-SX uporablja omrežni model, ki temelji na konceptualnem modelu Transmodel CEN za omrežja, urnike in obratovanje javnega prevoza, skupaj z modelom Identifikacija stalnih predmetov v javnem prevozu (IFOPT) CEN za opis fizičnih prevoznih izmenjav.

General Information

• Status: Withdrawn
• Publication Date: 19-Jul-2011
• Withdrawal Date: 03-May-2016
• ICS: 35.240.60 - IT applications in transport
• Technical Committee: CEN/TC 278 - Road transport and traffic telematics
• Drafting Committee: CEN/TC 278/WG 3 - Public transport (PT)
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 04-May-2016
• Ref Project: SIST-TS CEN/TS 15531-5:2011 - Public transport - Service interface for real-time information relating to public transport operations - Part 5: Functional service interfaces - Situation Exchange

Relations

• Replaced By: CEN/TS 15531-5:2016 - Public transport ‐ Service interface for real‐time information relating to public transport operations ‐ Part 5: Functional service interfaces situation exchange: Situation Exchange
• Effective Date: 11-May-2016

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2011
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operations - Part 5: Functional service interfaces - Situation Exchange
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Service d'échanges de données temps réel pour le Transport en Commun - Partie 5:
interfaces de service fonctionnel - Echanges de perturbation structurés (causes et
conséquences détaillées)
Ta slovenski standard je istoveten z: CEN/TS 15531-5:2011
ICS:
35.240.60 Uporabniške rešitve IT v IT applications in transport
transportu in trgovini and trade
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL SPECIFICATION
CEN/TS 15531-5
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
July 2011
ICS
English Version
Public transport - Service interface for real-time information
relating to public transport operations - Part 5: Functional
service interfaces - Situation Exchange
Service d'échanges de données temps réel pour le Öffentlicher Verkehr - Diensteschnittstelle für den
Transport en Commun - Partie 5: interfaces de service Echtzeitaustausch von Betriebsinformationen des ÖPNV
fonctionnel - Echanges de perturbation structurés (causes (SIRI) - Teil 5: Funktionelle Serviceschnittstelle: Situativer
et conséquences détaillées) Austausch
This Technical Specification (CEN/TS) was approved by CEN on 19 March 2011 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 15531-5:2011: E
worldwide for CEN national Members.

Contents Page
Foreword . 4
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions. 8
4 Symbols and abbreviations . 12
5 Situations as Software Entities . 12
5.1 General . 12
5.2 Structured Situations . 13
5.3 Distributed Situation processing . 14
5.3.1 Identity and Write-Only Updates . 14
5.3.2 Currency and the Situation Life Cycle . 15
5.3.3 Representational model for Situation Elements . 16
5.3.4 Update chains − Causal chains . 17
5.3.5 Cross-referencing Situations − Causal chains . 18
5.3.6 Branching and distributed updates . 18
5.3.7 Archiving . 20
5.4 Summary of Situation Management . 20
5.4.1 General . 20
5.4.2 Situation Identity . 20
5.4.3 Situation Life Cycle . 21
5.4.4 Situation Update Content . 21
5.4.5 Example of identifier allocation . 21
5.4.6 Date time stamps as identifiers . 22
5.5 Interoperability of Situation management systems . 22
5.5.1 General . 22
5.5.2 Datex2 Interoperability . 23
5.5.3 TPEG Interoperability . 23
5.5.4 Communications Bandwidth . 24
6 The Situation Model . 24
6.1 General . 24
6.2 Representing a PT Situation in SIRI-SX. 25
6.2.1 Summary of PT Situation model . 25
6.2.2 PT Situation Element Body . 26
6.2.3 PT Situation Body Details . 27
6.2.4 PT Situation Reason . 29
6.2.5 Situation Consequence . 31
6.2.6 The PT AffectsScope . 33
6.3 Representing a Road Situation in SIRI-SX . 39
6.3.1 Summary of Road Situation model . 39
6.3.2 Road Situation Element Body . 40
6.3.3 Common Accessibility . 41
6.3.4 Publishing Actions . 42
6.3.5 Common Types . 44
7 Situation Exchange Service [SX] . 50
7.1 Purpose . 50
7.2 Description . 50
7.3 Reference Data . 50
7.4 Capability and Permission Matrices . 50
7.4.1 Capability Matrix . 50
7.4.2 Permission Matrix . 52
7.5 UML Diagrammatic Representation . 53
7.5.1 General . 53
7.5.2 UML Detailed Diagram of SituationExchangeRequest . 54
7.5.3 UML Diagram of SituationExchangeDelivery - Summary . 55
7.5.4 UML Diagram of SituationExchangeDelivery - Detail . 56
7.5.5 UML Diagram of SituationContext . 57
7.6 SituationExchangeRequest . 58
7.6.1 SituationExchangeRequest Definition . 58
7.6.2 SituationStatusFilter Definition . 60
7.6.3 SituationNetworkFilter Definition. 60
7.6.4 SituationStopPlaceFilter Definition . 61
7.6.5 SituationJourneyFilter Definition . 61
7.6.6 SituationPlaceFilter Definition . 61
7.6.7 SituationExchangeRequest Example . 62
7.7 SituationExchangeSubscriptionRequest . 62
7.7.1 SituationExchangeSubscriptionRequest Definition . 62
7.7.2 SituationExchangeSubscriptionRequest Example . 63
7.8 SituationExchangeDelivery . 63
7.8.1 ServiceDelivery with a SituationExchangeDelivery . 63
7.8.2 SituationExchangeDelivery Element . 64
7.8.3 SituationContext Element . 64
7.8.4 SituationNetworkContext Element. 65
7.8.5 PtSituationElement . 65
7.8.6 RoadSituationElement . 104
8 SituationExchangeDelivery Examples - SituationExchangeDelivery PT Examples . 107
Annex A (normative) Notation . 109
Annex B (normative) Comparison of Terms .
...