© 2004Kizoom 1 SIRI - Service Interface for Real Time Information (CEN-OO ) Cursitor Street London, EC4A 1LT Siri 0.1g v3.6c

© 2004Kizoom 2 Topics Status UK Guidance Possible Further CEN Work Items –Additional Functional Services Further convergence / interoperability – TIH, Datex ?

© 2004Kizoom 3 SIRI Version 1.0 Status - CEN V1.0 Document & Schema Complete. –SG7 WG3 full agreement after country review –Going through CEN processes UK –Documentation available on RTIG site –Schema will be freely available at –Official UK Guidance Note to be finalised –Straightforward RTIG Migration –StopStatus = StopMonitoring –VehicleStatus=VehicleMonitoring Some Live services already! Roadmap –TIH / DATEX Alignment ?? –Some possible work items identified for CEN.

© 2004Kizoom 4 SIRI Evolution Path / Gene Pool

© 2004Kizoom 5 SIRI Approach & Services Separation of Concerns –Transport layer is separate Web Service architecture (http &/or SOAP…..) –SIRI General Communications Services Common to all types of Functional Service Robust, scaleable, architecture for Real-Time Tuneable for efficient deployment –SIRI Functional Services Timetables & Timetable Changes Stop Events (Arrivals & Departures) Vehicle Movement Connection Protection (Timetables, Events) General Informative Messages

© 2004Kizoom 6 Support Different Operation Models Interface s can be used for different operational models

© 2004Kizoom 7 UK Regional Guidance Notes #1 - Options Data Referencing –Stops: NaPTAN –Geolocation: WGS84 Interaction Patterns –Request / Response –Publish / Subscribe Delivery Pattern –Direct only (not– Fetched delivery) –Multiple Subscriber Delivery (not Single) Transport & Comms –http POST –Heartbeat for PubSub

© 2004Kizoom 8 UK Regional Guidance #2 Functions Core Functional Services –Stop Monitoring –Vehicle Monitoring –General Message Further Functional services –Planned Timetable –Estimated Timetable (Advanced Services) –Connection Timetable –Connection Moinitoring Optional Aspects –Access Control

© 2004Kizoom 9 Possible Additional Work Items Real-time Facility Changes Service FR –Allows changes to availability of facilities and equipment of stop, vehicle and service to be exchanged in real time. This can be used for example to communicate equipment changes affecting impaired access to PT such as lift or escalator changes. Information is of use to real-time journey-planning and alert services. Should consider interchange aspects. Situation/Event Structured Incident model UK/FR –Enhance GMS to have preferred structured incident model for describing disruptions to services, model relates to SIRI, Based on TPEG + TransModel Control Actions Server Interface SE –Service for distributing control actions amongst participants, for example for coordinating management of late services. Traffic Status / Prioritisation Interface for UTMC UK/DE –Allows real-time public transport management systems to exchange information with road UTMC systems, eg to provide real time delay information a road speed information to the road traffic management system, or to allow for the exchange of signal priority options.

© 2004Kizoom 10 SIRI - Separation of concerns Data Content Exchange Behaviour Transport Protocol well-defined interactions with XML schema Representations parameterising behaviour Independent e.g. HTTP POST, SOAP. defined XML Schema For payload

© 2004Kizoom 11 TIH Data Content Exchange Behaviour Transport Protocol define through registry simple GET request/response (+ allows more complex if required, but does not define) HTTP GET (or CORBA)