Service Interface for Real Time Information

The Service Interface for Real Time Information or SIRI is an XML

XML

Extensible Markup Language is a set of rules for encoding documents in machine-readable form. It is defined in the XML 1.0 Specification produced by the W3C, and several other related specifications, all gratis open standards....

protocol to allow distributed computers to exchange real time

Real time business intelligence

Real-time business intelligence is the process of delivering information about business operations as they occur.In this context, real-time means a range from milliseconds to a few seconds after the business event has occurred...

information about public transport

Public transport

Public transport is a shared passenger transportation service which is available for use by the general public, as distinct from modes such as taxicab, car pooling or hired buses which are not shared by strangers without private arrangement.Public transport modes include buses, trolleybuses, trams...

services and vehicles.

The protocol is a CEN

European Committee for Standardization

The European Committee for Standardization or Comité Européen de Normalisation , is a non-profit organisation whose mission is to foster the European economy in global trading, the welfare of European citizens and the environment by providing an efficient infrastructure to interested parties for...

technical specification, developed with initial participation by France, Germany (Verband Deutscher Verkehrsunternehmen), Scandinavia, and the UK (RTIG)

SIRI is based on the Transmodel

Transmodel

Transmodel is the CEN European Reference Data Model for Public Transport Information; it provides an abstract model of common public transport concepts and data structures that can be used to build many different kinds of public transport information system, including for timetabling, fares,...

abstract model for public transport information, and comprises a general purpose model, and an XML

XML

schema for public transport information.

A SIRI White Paper is available for further information on the protocolhttp://www.kizoom.com/standards/siri/documentation.htm

Scope

SIRI allows pairs of server computers to exchange structured real-time information about schedules, vehicles, and connections, together with general informational messages related to the operation of the services. The information can be used for many different purposes, for example:

To provide real time-departure from stop information for display on stops, internet and mobile delivery systems;
To provide real-time progress information about individual vehicles;
To manage the movement of buses roaming between areas covered by different servers;
To manage the synchronisation of guaranteed connections between fetcher and feeder services;
To exchange planned and real-time timetable updates;
To distribute status messages about the operation of the services;
To provide performance information to operational history and other management systems.

SIRI includes a number of optional capabilities.
Different countries may specify a country profile of the subset of SIRI capabilities that they wish to adopt.

Current version

Version 1.0 of SIRI, representing the CEN documents as published, is currently available as an XSD file http://www.siri.org.uk/schema/schemas.htm.

SIRI is kept under an informal maintenance regime, with version control. Later versions of the schema are available at the same site, together with change notes.

Example of sites using SIRI

Different SIRI is used in a number of European and US sites

Leicester Travel: Bus real-time from SIRI-SM http://leicestertravel.info/
Transport for London
Transport for London
Transport for London is the local government body responsible for most aspects of the transport system in Greater London in England. Its role is to implement the transport strategy and to manage transport services across London...

Incidents from SIRI-GMS & Real-time data from LBS River http://www.tfl.gov.uk
New York City MTA BusTime - SIRI-SM and SIRI-VM - http://bustime.mta.info/wiki/Developers/Index

External links

http://www.siri.org.uk Official SIRI Website
http://www.rtig.org.uk RTIG Website
http://www.vdv.de VDV Website
http://www.cenorm.be CEN Website

The source of this article is wikipedia, the free encyclopedia. The text of this article is licensed under the GFDL.

Scope

Current version

Example of sites using SIRI

See also

External links