TC278 WG3 SIRI – Server Interface for Realtime Information

Nick Knowles, CTO Nick.Knowles@kizoom.com© Copyright Kizoom 2006

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SIRI – Introduction

• Real-time Server-to-Server Services for Public Transport• Defines a Service Interface for exchanging real-

time information for public transport networks.• Complements an underlying static information

model for network and timetable description• Provides information on any change on the

timetabled information, from original publication to the actual & predicted transport running times.

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SIRI Architecture • Modular

functional services

• Common transport

• Efficient real-time patterns

• Pluggable data e.g. NaPTAN

SIRI Common Services

Sto

p m

on

itoirin

g

Sto

p tim

etable

Pro

du

ction

timetab

le

Estim

ated tim

etable

Co

nn

ection

mo

nito

iring

Transmodel: PT modelStop Points, Vehicle Journeys, Lines, Journey Patterns, Vehicles, etc

Co

nn

ection

timetab

le

Pull Push

Gen

eral Messag

e

Situation+

+

Veh

icle mo

nito

ring

Facility+

+

Status

IFOPT: PT Stop Place modelStop Place

TPEG:Situation Place

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Separation of concerns

DataContent

ExchangeBehaviour

TransportProtocol

well-defined interactionswith XML schemaRepresentations

parameterising behaviour

Independent e.g.HTTP POST,

SOAP.

definedXML SchemaFor payload

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Example use of SIRI Services

AVMS

JP

ICS ICS Alerts

PT

ET

STSM

GMSGMS

GMS GMS

PT

AVMS

PT

ET

STSM

Web& Mobile

SM

ET

SM

SM

GMS

GMS

ETVM

VM

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Example 1: Hamburg

• Federated Modes & Regions

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Example 2: Copenhagen

• Integrator

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Example: Isle de France

• Hybrid

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SIRI – Gene Pool/Evolution

• Derived from UK, German & French, & Scandinavian National

• XML & TransModel based

• Supports both pull & Push architectures

• Same Interfaces can be used for different operational models

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Proposed New work Item SIRI Situation Model

• Add a Full Incident Service to • Includes addition information for internal management & user of

incidents • Full XML integrated with SIRI models.

• Requirements• Support advanced ITS operations – eg RTJP, alerts, angels• Multi-modal, Road• Interoperable with TPEG – Export • Interoperable with Datex

• To do • Review Incident categories and properties• Review operational requirements• Review Datex2 & Road requirements

New

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New SIRI Services

• SIRI Situation Exchange (SX): • Scope:Real-time Unplanned/Planned Incidents “Back

• TransModel network & service model• SIRI RT Transport • IFOPT Place model• TPEG Categories and classifications

• “Back Office for TPEG”• Status

• Initial Draft Feb 2007• Working on revised Draft for May 2007

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New SIRI Services

• SIRI Facilities Monitoring • Scope: Real-time Changes to Availability of Equipment

/ Local services• SIRI Transport• IFOPT Place model & Equipment Categories• IFOPT Accessibility model (Harmonise with IFOPT

GDF etc)• Status

• Initial Draft Feb 2007• Working on revised Draft

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New SIRI Services

• SIRI Facilities Monitoring • Scope: Real-time Changes to Availability of Equipment

/ Local services• SIRI Transport• IFOPT Place model & Equipment Categories• IFOPT Accessibility model (Harmonise with IFOPT

GDF etc)• Status

• Initial Draft Feb 2007• Working on revised Draft

The Bigger Picture Building National & International models

Nick Knowles, CTO Nick.Knowles@kizoom.com© Copyright Kizoom 2006

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Model Dependencies

Stop Place (IFOPT)Stop Place (IFOPT)

Incidents RT(SIRI SS)

Incidents RT(SIRI SS)

Timetables(TransModel)

Timetables(TransModel)

Facilities RT(SIRI FM)

Facilities RT(SIRI FM)

Road Journey Planner)Road Journey Planner)

RT Timetable(SIRI ET)

RT Timetable(SIRI ET)

AccessibilityCategories

AccessibilityCategories GIS coords GMLGIS coords GML

PT Journey Planner(JourneyWeb)

PT Journey Planner(JourneyWeb)

Departures RT(SIRI SM)

Departures RT(SIRI SM)

Road Network (XGDF)Road Network (XGDF)

Journey TimesJourney Times

EquipmentTypes

EquipmentTypes

Incidents RT(TPEG PTI)

Incidents RT(TPEG PTI)

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Public Transport Road Information

Data Reference

Inter-systemData Exchange

Communication to end user

IFOPTGDF

Data ModelDatex 2

(Core)Transmodel

Web W3CHTTP

Web ServiceWap I-Mode

SMS …

Norms & Standards for Passenger Information Systems

Data ModelDictionnaryLocalisation

XML Protocols SIRIReal-TimeServices

Datex 2Events

TPEG RDS-TMC

Facilities

Network Reference Data: TRIDENT

(TransXchange/VDV451-452)

OGC-GML

X-GDF

Distribution

Clients

UK Public Transport Data Exchange for JP: Use of

standards

Bus Timetables

TransXChange

JourneyPlannerEngines

DataBuild

Stops

NaPTAN

Places, Areas

NPTG

Mapping

OS+ ITN LayerDNF, XGDF

Real-Time Server

Places

Services

Journeys

StopEvents

StopEvents

Timetables

Operators

Points of Interest

e.g. PointX

IFOPT

Common Abstract model (TransModel)

Train

TimetablesRJIS CIF

JourneyWebJourneyWeb

UpdatesExchange

StopEvents

Vehicle

Real-Time Server

UpdatesExchange Data

Build

Timetable

Connection

Connection

+ Fares

Fares

FareXChange

Vehicles

ReservationEngines

SIRISIRI

DataBuild

Dynamic FaresUpdates

Exchange

LBS/Placefinder

IFOPTIFOPT