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Transmodel


Transmodel (formally CEN TC278, Reference Data Model For Public Transport, EN12896) 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, operational management, real time data, journey planning etc.

Transmodel provides a comprehensive conceptual model for public transport information systems including passenger information systems, with coverage of a number of different subdomains of PT information, including transport network infrastructure and topology, public transport schedules, journey planning, fares, fare validation, real-time passenger information and operational aspects of public transport.

Transmodel establishes a consistent terminology for describing public transport concepts, providing definitive equivalents for use in the National Languages of each participant nation. Where PT related words in vernacular use may span a number of different concepts and lead to differences of interpretation, it establishes a more precise technical terminology for unambiguous use by PT information system developers. For example the terms 'trip', 'journey', 'service', are overlapping concepts that in Transmodel are used only in a more specific usages.

The current version of Transmodel is 5.1 with a 6.0 in draft.

Transmodel was originally developed within a range of European projects of several European Programmes (Drive I, Drive II, TAP) with the support of the European Commission (DGXIII), and national public institutions, in particular of the French Ministry of Transport (Direction des Transports Terrestres) and private companies.

More recently Transmodel has been fundamental to the development of a number of concrete national data models and European Standards, including TransXChange (2001-2005 now the UK standard for bus timetables), Trident (1999-2003), Service Interface for Real Time Information (SIRI: 2001-2005, now a CEN technical specification) for Real-time data exchange for buses, and Identification of Fixed Objects In Public Transport (2006-2007), now a prCEN technical specification. Its provision of a uniform conceptual framework, consistent terminology and well grounded abstractions make it especially valuable for harmonising and modernising legacy standards and systems and for international cooperation.


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