DATEX II models can be extended using extensions. The following conditions must be kept in mind:

  • DATEX II can be extended with application specific extensions.
  • Extensions are recommended to be done in the UML model. Users are strongly discouraged to manually edit the generated schemas.
  • A level A model can be extended and will then become a Level B if the Level B extensions rules are respected. If not, the model will become a Level C model.

Here you can look into updated extensions.

If you want to upload an extension yourself, please log in to your datex2 user account and upload your content by clicking on  in the user account menu on the bottom of this page. 

For all requests related to the contents of the Extension Directory please send a message at

Version: 3.2
Lane Carriageway Management ExtensionEUDATEX II PSA
Version: 3.0
Emergency Vehicle Assignment information extensionSwedenVolvo Car Corporation
Extentions for smart routing and avoidance”EUSocrates 2.0
Socrates 2.0 Regulated Access Zone PublicationsEUSocrates 2.0
Traffic management response evaluation extensionUnited KingdomMott MacDonald
Version: 2.3
DATEX Collaborative ITS Services and Traffic Management Plans ExtensionEUDATEX organisation
TrafficSignalStatus UTMC suppliers
Version: 2.2
Linear By CoordinatesGermanyAlbrechtConsult GmbH
OpenLR Extension 1.5Sweden, NetherlandsSwedish Transport Administration, TomTom International B.V. Dutch National DataWarehouse for Traffic Information (NDW(
Parking Publications Extension v1.0aGermanyAlbrechtConsult GmbH
Version: 2.2
Safety Related MessagesGermanyAlbrechtConsult GmbH
Version: 2.1
VMS Operational Exchange and TMP ManagementItalyIT Motorways DATEX group
Version: 2.0
LineString extensionSwedenViati
Road Infrastructure Publication ExtensionPortugalArmis – Sistemas de Informação, lda
Version: 2.0 RC2
CCTV Publications Extension UpdatedUK / EnglandHighways Agency
Data Quality Publication ExtensionUK / EnglandHighways Agency
Version: 2.0 RC1
Catalogue ExtensionGermanyGEVAS software GmbH
VMS Publication ExtensionItaly / EnglandAutostrada per l’Italia and The Highways Agency (England)
Version: 1.0
AgoraC extensionSwedenViati
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