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 EN 15531-2 and not repeated in this document.<\/p>\n
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:<\/p>\n
Control centres;<\/p>\n<\/li>\n
Operations Staff;<\/p>\n<\/li>\n
Public Information systems;<\/p>\n<\/li>\n
Alert systems and personalised alert systems;<\/p>\n<\/li>\n
UTMC systems;<\/p>\n<\/li>\n
Journey planners;<\/p>\n<\/li>\n
AVMS (Automatic Vehicle Management Systems).<\/p>\n<\/li>\n<\/ul>\n
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.<\/p>\n
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.<\/p>\n
Situation and computer systems and applications are typically distributed<\/i>, 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.<\/p>\n Public transport. Service interface for real-time information relating to public transport operations – Functional service interfaces situation exchange: Situation Exchange<\/b><\/p>\nPDF Catalog<\/h4>\n
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\n PDF Pages<\/th>\n PDF Title<\/th>\n<\/tr>\n \n 4<\/td>\n Contents Page <\/td>\n<\/tr>\n \n 135<\/td>\n Annex\u00a0A (normative)Notation
A.1 General
A.2 Classes
A.3 Enumerations
A.4 Groups
A.5 Notes
A.6 Relationships <\/td>\n<\/tr>\n\n 136<\/td>\n A.7 Use of Colour
A.8 Serialisation: Containment and Reference <\/td>\n<\/tr>\n\n 137<\/td>\n A.9 Alternative Representations of XML Structures in UML <\/td>\n<\/tr>\n \n 139<\/td>\n A.10 XML Fragment for Example <\/td>\n<\/tr>\n \n 140<\/td>\n A.11 Order of Attributes
A.12 Direction of Reading
A.13 Simple Data Types
A.14 Reusable Complex Data Types <\/td>\n<\/tr>\n\n 141<\/td>\n Annex\u00a0B (normative)Comparison of Terms
B.1 SIRI-SX and Datex2 <\/td>\n<\/tr>\n\n 144<\/td>\n Annex\u00a0C (informative)Use Cases for Situation Exchange
C.1 General
C.2 Use Cases: Capture and Origination of Situations
C.3 CAPT#01 Situations entered manually by operator staff
C.4 CAPT#02 Situations updated manually by operator staff <\/td>\n<\/tr>\n\n 145<\/td>\n C.5 CAPT#03 Situations being generated automatically from a situation analyser
C.6 CAPT#04 Situations arising from Facility Monitoring (e.g. lift failure)
C.7 CAPT#05 Situations arising from Control Actions (e.g. short running, platform change)
C.8 CAPT#06 Situations supplied automatically from a related PT network (e.g. rail incidents being fed to bus system) in both SIRI and TPEG formats
C.9 CAPT#07 Situations supplied automatically from a related Road network (e.g. road situations being fed to bus system) Datex2 formats
C.10 CAPT#08 Road work affecting bus lanes
C.11 CAPT#09 Parking not available at an interchange to PT <\/td>\n<\/tr>\n\n 146<\/td>\n C.12 CAPT#10 Weather or non-network specific Situation or event
C.13 CAPT#11 Cross referencing Situations with previous Situations
C.14 CAPT#12 Workflow for verification, validation and editorial correction
C.15 CAPT#13 Providing of collective guidance of passengers
C.16 CAPT#14 Audit trails, retrospectives and process views
C.17 Use Cases: Relating Situations to other SIRI services <\/td>\n<\/tr>\n\n 147<\/td>\n C.18 XREF#01 Problem affecting a specific vehicle journey
C.19 XREF#02 Problem at a stop place affecting some or all journeys for some or all modes
C.20 XREF#03 Problem affecting a whole line or a section of a line between two stop places
C.21 XREF#04 Problems affecting an interchange
C.22 XREF#05 Problem affecting a whole network <\/td>\n<\/tr>\n\n 148<\/td>\n C.23 XREF#06 Disruption (e.g. partial blockage) or degradation (e.g. crowding) of normal travel
C.24 XREF#07 Problems affecting particular classes of users e.g. impaired mobility
C.25 Use Cases: Onwards Distribution to other systems (e.g. in TPEG and Datex2)
C.26 DIST#01 Distribution of Situations to displays
C.27 DIST#02 Distribution of Situations to external information services, e.g. broadcasters
C.28 DIST#03 Distribution of Situations to staff <\/td>\n<\/tr>\n\n 149<\/td>\n C.29 DIST#04 Distribution of Situations to alerts and travel angels
C.30 DIST#05 Projection of Situations on maps
C.31 DIST#06 Distribution of Situations to journey planners
C.32 DIST#07 Distribution of Situations to personal navigators and smart devices
C.33 DIST#08 Distribution of Situations to other incident management systems
C.34 DIST#09 Distribution of updates to existing Situations <\/td>\n<\/tr>\n\n 150<\/td>\n C.35 DIST#10 Aging of Situations and updates <\/td>\n<\/tr>\n \n 151<\/td>\n Annex\u00a0D (informative)Mapping SIRI-SX to GTFS realtime
D.1 Mapping of SIRI-SX elements to GTFS-realtime <\/td>\n<\/tr>\n\n 152<\/td>\n D.2 Mapping of SIRI-SX Journey Condition to GTFS-realtime ScheduleRelationship
D.3 Mapping of SIRI-SX Situation Categories to GTFS-realtime Cause <\/td>\n<\/tr>\n\n 153<\/td>\n D.4 Mapping of SIRI-SX Service Conditions to GTFS Real-time Effect <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" \n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2016<\/td>\n 156<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":231340,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[698,2641],"product_tag":[],"class_list":{"0":"post-231337","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-35-240-60","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/231337","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/231340"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=231337"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=231337"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=231337"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}