SIST-TS CEN/TS 15531-5:2022

Public transport - Service interface for real-time information relating to public transport operations - Part 5: Functional service interfaces situation exchange: 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 EN 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).
SIRI-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 that is an integrated part of CEN Transmodel conceptual model for Public Transport networks.
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. TPEG is maintained by the Traveller Information Services Association (TISA). To this end, the SIRI-SX situation classification model has been harmonized 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 harmonization 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 Echtzeitinformationen bezogen auf Betriebsabläufe im öffentlichen Verkehr - Teil 5: Funktionelle Serviceschnittstelle - Situativer Austausch

Transport public - Interface de service pour les informations en temps réel relatives aux opérations de transport public - Partie 5 : Service d'interface fonctionnelle - Échange de l'état de l'exploitation et de son contexte

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

Storitev SIRI Situation Exchange (SIRI-SX) omogoča učinkovito izmenjavo podatkov o situacijah, ki jih povzročijo načrtovani in nenačrtovani incidenti oz. dogodki. Namenjena je podpori primerov uporabe, opredeljenih v dodatku C. Situacije so dejanske ali potencialne motnje normalnega delovanja prometnega omrežja. Storitev SIRI-SX uporablja skupni komunikacijski okvir SIRI ter storitve, ki so opisane v standardu EN 15531-1 in niso ponovljene v tem dokumentu.
Storitev Situation Exchange vključuje bogat model situacij, ki omogoča strukturiran opis vseh vidikov situacij multimodalnega potovanja, vključno z vzrokom, obsegom, posledico in pravili za razpošiljanje občinstvu. Strukturirane vrednosti omogočajo računalniško razpošiljanje prek najrazličnejših kanalov ter predstavitev podatkov v različnih formatih za različne naprave in različne ciljne skupine. Storitev Situation Exchange omogoča izmenjavo informacij o incidentih in dogodkih med:
–   nadzornimi centri;
–   operativnim osebjem;
–   javnimi informacijski sistemi;
–   opozorilnimi sistemi in prilagojenimi alarmnimi sistemi;
–   sistemi UTMC;
–   načrtovalci potovanj;
–   sistemi AVMS (samodejnimi sistemi za upravljanje vozil).
SIRI-SX uporablja omrežni model, ki temelji na konceptualnem modelu CEN Transmodel za omrežja, vozne rede in operacije javnega prevoza, skupaj z modelom identifikacije fiksnih objektov v javnem prometu (IFOPT) CEN za opisovanje fizičnih prometnih križišč, ki je sestavni del konceptualnega modela CEN Transmodel za omrežja javnega prevoza.
Storitev Situation Exchange je predvidena kot storitev za zajemanje in izmenjavo »v zaledju«, ki bo zagotavljala podatke drugim javnim sistemom za razširjanje potovalnih informacij, zlasti tistim, ki uporabljajo format TPEG. Skupina TPEG (Transport Protocol Expert Group) je standard Evropske radiodifuzne zveze za oddajanje potovalnih podatkov prek radia DAB (Digital Assisted Broadcasting) in drugih kanalov. TPEG vzdržuje združenje TISA (Traveller Information Services Association). V ta namen je bil model klasifikacije situacij SIRI-SX v največji možni meri usklajen z modeloma TPEG in DATEX2, tako da je mogoče doseči popolno interoperabilnost. Uporaba strukturiranih elementov iz TPEG, za katere že obstajajo prevodi v večini evropskih jezikov, prav tako olajša berljivost uporabnikom v različnih nacionalnih jezikih. Ohranjanje in izboljšanje usklajenosti s TPEG bo stalen cilj. Poleg izmenljive vsebine TPEG sporočila SIRI-SX vsebujejo dodatne strukturirane informacije, ki omogočajo njihovo obdelavo na dodatne načine.
Situacije in računalniški sistemi ter aplikacije so običajno porazdeljeni, kar pomeni, da se bodo informacije zajemale v enem sistemu in se izmenjevale z drugimi za razširjanje in nadaljnjo obdelavo. To pomeni, da je potrebna takšna zasnova sporočil, ki omogoča upravljanje identitete porazdeljenih sporočil skozi čas in v različnih sistemih, tako da lahko različni sistemi pozneje prek omrežja uskladijo posodobitve situacij, zastarela sporočila pa je mogoče samodejno umakniti iz uporabe. Model SIRI-SX SITUATION je zasnovan tako, da podpira porazdeljeno upravljanje situacij.

General Information

• Status: Published
• Publication Date: 05-Oct-2022
• ICS: 35.240.60 - IT applications in transport
• Technical Committee: ITC - Information technology
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 20-Sep-2022
• Due Date: 25-Nov-2022
• Completion Date: 06-Oct-2022
• Ref Project: CEN/TS 15531-5:2022 - Public transport - Service interface for real-time information relating to public transport operations - Part 5: Functional service interfaces situation exchange: Situation exchange

Relations

• Replaces: SIST-TS 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: 01-Nov-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST-TS CEN/TS 15531-5:2022
01-november-2022
Nadomešča:
SIST-TS CEN/TS 15531-5:2016
Javni prevoz - Vmesnik za informiranje v realnem času za potrebe delovanja
javnega prevoza - 5. del: Vmesniki funkcijske storitve izmenjave podatkov:
Izmenjava podatkov o situaciji
Public transport - Service interface for real-time information relating to public transport
operations - Part 5: Functional service interfaces situation exchange: Situation exchange
Öffentlicher Verkehr - Diensteschnittstelle für Echtzeitinformationen bezogen auf
Betriebsabläufe im öffentlichen Verkehr - Teil 5: Funktionelle Serviceschnittstelle -
Situativer Austausch
Transport public - Interface de service pour les informations en temps réel relatives aux
opérations de transport public - Partie 5 : Service d'interface fonctionnelle - Échange de
l'état de l'exploitation et de son contexte
Ta slovenski standard je istoveten z: CEN/TS 15531-5:2022
ICS:
35.240.60 Uporabniške rešitve IT v IT applications in transport
prometu
SIST-TS CEN/TS 15531-5:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TS CEN/TS 15531-5:2022

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SIST-TS CEN/TS 15531-5:2022


CEN/TS 15531-5
TECHNICAL SPECIFICATION

SPÉCIFICATION TECHNIQUE

August 2022
TECHNISCHE SPEZIFIKATION
ICS 35.240.60 Supersedes CEN/TS 15531-5:2016
English Version

Public transport - Service interface for real-time
information relating to public transport operations - Part
5: Functional service interfaces situation exchange:
Situation exchange
Transport public - Interface de service pour les Öffentlicher Verkehr - Diensteschnittstelle für
informations en temps réel relatives aux opérations de Echtzeitinformationen bezogen auf Betriebsabläufe im
transport public - Partie 5 : Service d'interface öffentlichen Verkehr - Teil 5: Funktionelle
fonctionnelle - Échange de l'état de l'exploitation et de Serviceschnittstelle - Situativer Austausch
son contexte
This Technical Specification (CEN/TS) was approved by CEN on 20 June 2022 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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 15531-5:2022 E
worldwide for CEN national Members.

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Contents Page
European foreword . 7
Introduction . 9
1 Scope . 11
2 Normative references . 12
3 Terms and definitions . 12
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 . 15
5.3.4 Update chains − Causal chains . 17
5.3.5 Cross-referencing Situations − Causal chains . 17
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 General Transit Feed Speciation Real-time interface Mapping . 24
5.5.5 Communications Bandwidth . 24
6 The Situation Model . 24
6.1 General . 24
6.2 Representing a Public Transport Situation in SIRI-SX . 25
6.2.1 Summary of Public Transport 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 . 28
6.2.5 Situation Consequence . 29
6.2.6 The Public Transport AffectsScope . 31
6.3 Representing a Road Situation in SIRI-SX . 37
6.3.1 Summary of Road Situation model . 37
6.3.2 Road Situation Element Body . 39
6.4 Common Accessibility . 39
6.5 Publishing Actions . 40
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6.6 Common Types . 42
6.6.1 Common SIRI Data Types . 42
6.6.2 Common General SIRI Enumerations . 42
6.6.3 SIRI-SX Enumerations . 43
6.6.4 TRANSMODEL Enumerations . 43
6.6.5 TPEG Miscellaneous Enumerations . 44
6.6.6 TPEG Mode Enumerations . 45
7 Situation Exchange Service [SX] . 46
7.1 Purpose. 46
7.2 Description . 47
7.3 Reference Data . 47
7.4 Capability and Permission Matrices . 47
7.4.1 Capability Matrix . 47
7.5 UML Diagrammatic Representation . 49
7.5.1 General . 49
7.5.2 UML Summary Diagram of SituationExchangeRequest . 49
7.5.3 UML Detailed Diagram of SituationExchangeRequest . 50
7.5.4 UML Diagram of SituationExchangeDelivery - Summary . 51
7.5.5 UML Diagram of SituationExchangeDelivery - Details . 52
7.5.6 UML Diagram of SituationContext . 53
7.6 SituationExchangeRequest . 54
7.6.1 SituationExchangeRequest Definition . 54
7.6.2 SituationStatusFilterGroup Definition . 56
7.6.3 SituationNetworkFilterGroup Definition . 57
7.6.4 SituationStopPlaceFilterGroup Definition. 58
7.6.5 SituationJourneyFilterGroup Definition . 58
7.6.6 SituationPlaceFilterGroup Definition . 59
7.6.7 SituationRoadFilter Definition . 59
7.6.8 AccessibilityNeedFilter Element . 59
7.6.9 SituationExchangeRequest Example . 60
7.7 SituationExchangeSubscriptionRequest . 60
7.7.1 SituationExchangeSubscriptionRequest Definition . 60
7.7.2 SituationExchangeSubscriptionRequest Example . 61
7.8 SituationExchangeDelivery . 61
7.8.1 ServiceDelivery with a SituationExchangeDelivery . 62
7.8.2 SituationExchangeDelivery Element . 62
7.8.3 PtSituationContext Element . 62
7.8.4 Network Element . 63
7.8.5 PtSituationElement . 63
7.8.6 RoadSituationElement . 110
8 SituationExchangeDelivery Examples . 113
8.1 SituationExchangeDelivery Example . 113
8.2 SituationExchangeDelivery Example with PassengerInformationAction . 114
A.1 General . 117
A.2 Classes . 117
A.3 Enumerations . 117
A.4 Groups . 117
A.5 Notes . 117
A.6 Relationships . 117
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A.7 Use of Colour . 118
A.8 Serialisation: Containment and Reference . 118
A.9 Alternative Representations of XML Structures in UML . 119
A.10 XML Fragment for Example . 121
A.11 Order of Attributes . 122
A.12 Direction of Reading . 122
A.13 Simple Data Types . 122
A.14 Reusable Complex Data Types . 122
B.1 SIRI-SX and Datex2 . 123
C.1 General . 126
C.2 Use Cases: Capture and Origination of Situations . 126
C.3 CAPT#01 Situations entered manually by operator staff . 126
C.4 CAPT#02 Situations updated manually by operator staff . 126
C.5 CAPT#03 Situations being generated automatically from a situation analyser . 127
C.6 CAPT#04 Situations arising from Facility Monitoring (e.g. lift failure). 127
C.7 CAPT#05 Situations arising from Control Actions (e.g. short running, platform
change) . 127
C.8 CAPT#06 Situations supplied automatically from a related public transport network
(e.g. rail incidents being fed to bus system) in both SIRI and TPEG formats . 127
C.9 CAPT#07 Situations supplied automatically from a related Road network (e.g. road
situations being fed to bus system) Datex2 formats . 127
C.10 CAPT#08 Road work affecting bus lanes . 127
C.11 CAPT#09 Parking not available at an interchange to PT . 128
C.12 CAPT#10 Weather or non-network specific Situation or event . 128
C.13 CAPT#11 Cross referencing Situations with previous Situations . 128
C.14 CAPT#12 Workflow for verification, validation and editorial correction . 128
C.15 CAPT#13 Providing of collective guidance of passengers . 128
C.16 CAPT#14 Audit trails, retrospectives and process views . 128
C.17 Use Cases: Relating Situations to other SIRI services . 128
C.18 XREF#01 Problem affecting a specific vehicle journey . 129
C.19 XREF#02 Problem at a stop place affecting some or all journeys for some or all
modes . 129
C.20 XREF#03 Problem affecting a whole line or a section of a line between two stop
places . 129
C.21 XREF#04 Problems affecting an interchange . 129
C.22 XREF#05 Problem affecting a whole network . 129
C.23 XREF#06 Disruption (e.g. partial blockage) or degradation (e.g. crowding) of normal
travel . 130
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C.24 XREF#07 Problems affecting particular classes of users e.g. impaired mobility . 130
C.25 Use Cases: Onwards Distribution to other systems (e.g. in TPEG and Datex2) . 130
C.26 DIST#01 Distribution of Situations to displays . 130
C.27 DIST#02 Distribution of Situations to external information services, e.g.
broadcasters . 130
C.28 DIST#03 Distribution of Situations to staff . 130
C.29 DIST#04 Distribution of Situations to alerts and travel angels . 131
C.30 DIST#05 Projection of Situations on maps . 131
C.31 DIST#06 Distribution of Situations to journey planners . 131
C.32 DIST#07 Distribution of Situations to personal navigators and smart devices . 131
C.33 DIST#08 Distribution of Situations to other incident management systems . 131
C.34 DIST#09 Distribution of updates to existing Situations . 131
C.35 DIST#10 Aging of Situations and updates . 132
D.1 Mapping of SIRI-SX elements to GTFS-realtime . 133
D.2 Mapping of SIRI-SX Journey Condition to GTFS-realtime ScheduleRelationship . 134
D.3 Mapping of SIRI-SX Situation Categories to GTFS-realtime Cause . 134
D.4 Mapping of SIRI-SX Service Conditions to GTFS Real-time Effect . 134
E.1 Overview of Enumerations . 136
E.2 SituationSource Element . 137
E.2.1 SituationSourceTypeEnumeration (+SIRI v2.1) . 137
E.2.2 SourceTypeEnum (+SIRI v2.1) . 138
E.3 Situation Status Elements . 139
E.3.1 Verification Element Values (TPEG Pti32) (+SIRI v2.1) . 139
E.3.2 Progress Element Values (WorkflowStatusEnumeration) (+SIRI v2.1) . 139
E.3.3 QualityIndex Element Values (+SIRI v2.1) . 140
E.3.4 Reality Element Values (+SIRI v2.1) . 140
E.3.5 Likelihood Element Values (ProbabilityOfOccurrence) (+SIRI v2.1) . 141
E.4 Situation Temporal Elements . 141
E.4.1 Day Type Element Values (TPEG Pti34) (+SIRI v2.1) . 141
E.5 Situation Classifier Elements . 142
E.5.1 Severity Element Values (TPEG Pti26) (+SIRI v2.1) . 142
E.5.2 Audience (+SIRI v2.1) . 142
E.5.3 Sensitivity (+SIRI v2.1) . 143
E.5.4 ReportType (TPEG Pti27) (+SIRI v2.1) . 143
E.5.5 ScopeType. 143
E.5.6 Situation Reason . 144
E.5.7 Mapping Reason codes to TPEG and other systems . 144
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E.6 Service Condition (TPEG Pts043) (+SIRI v2.1) . 156
E.6.1 Service Condition deprecated (TPEG Pti13) (+SIRI v2.1) . 157
E.7 DelayBandEnumeration (based on Datex2 DelayBandEnum) (+SIRI v2.1) . 157
E.8 DelaysTypeEnum (Datex2) . 158
E.9 TicketRestrictions (TPEG Pti25). 158
E.10 AdviceType (TPEG Pts039) (+SIRI v2.1) . 159
E.11 AreaOfInterest (based on Datex2) . 159
E.12 RoutePointType (TPEG Pts044 Route) (+SIRI v2.1) . 160
E.13 StopPointType (TPEG Pts017 Stop) (+SIRI v2.1) . 161
E.14 AccessibilityFeatureType (TRANSMODEL) (+SIRI v2.1) . 161
E.15 StopPlaceType (TPEG Pts041 StopPlaceType) (+SIRI v2.1) . 162
E.16 StopPlaceComponentType . 163
E.17 VehicleModesOfTransportationEnumeration (TPEG Pti01) .
...