NeTEx

NeTEx (formally Network Exchange PD CEN/TS 16614-1:2014', PD CEN/TS 16614-2:2014 and PD CEN/TS 16614-3:2014) is the CEN Technical standard for exchanging Public Transport Information as XML documents. it provides a W3C XML schema based on the Transmodel abstract model of common public transport concepts and data structures and can be used to exchange many different kinds of data between passenger information systems, including for stops, facilities, timetabling, fares. Such data can be used by both operational management systems and customer facing systems for journey planning etc.

NeTEx provides a modular XML schema for public transport information data 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. It includes uniform mechanisms for versioning and identifying entity instances within a global context. It provides protocols for exchanging NeTEx XML documents using either asynchrous bulk exchange ordynamic messages using http and Service Interface for Real Time Information. Like Transmodel on which it is closely based (using [Model Driven Design] concepts) NeTEx provides reusable abstractions to represent data elemenst of public transport.

NeTEx is an evolution of the Transmodel project, which developed a conceptual model to harmonise and systemise the data formats of a number of European countries. It represents a harmonisation of a number of different European standards such as Bison, Trident (FRance) TransXChange (UK), VDV 452 (Germany), TAP TSI, for all of which a mapping to NeTEx exists. There is also a mapping to Google's GTFS.

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