railML 47th Conference

Join us for the 47th railML Virtual Conference

Register now to explore the latest developments in railML!

railML development

railML® agile development process

Contact us to contribute to railway open-source data standards!

railVIVID

Official railVIVID 2 is available

Check the validity of your railML files!

IDX4rail PraxisTag 2025

railML Ontology

railML ontology beta publication

The goal is to improve understandability for railML schemas

railML.org Mission

Open data exchange standard for railways

We are committed to exploring, discussing and presenting systematic XML-based solutions for the entire railway sector

railML 3.3 Official release

railML 3.3: Final Release

Download the latest rail standard for free!

Documentation

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Forum

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Download schemas

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Next Events

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NEWS from railML

railVIVID 2.0: Major Step Forward in railML® Validation

railML.org has officially launched railVIVID 2.0 with significant improvements to the validation of railML® data. The release introduces completely restructured features with a strong focus on maintainability and usability and is now available for...

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Understanding semantic constraints in railML

What is a Semantic Constraint and why do we need them? A semantic constraint may be defined as a rule or condition applied to data, with the purpose of validating that the information is not only syntactically correct, but also logically...

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IL

[IL] Track and switch locks (Befahrbarkeitssperren) by Stéphane Kaloustian
30. Apr 2025

MISC

[MISC] Re: [Ontology v0.6] Validity by Mathias Vanden Auweele
30. Apr 2025

RS

[RS] [railML3] Request for feedback on changes of our deprecation policy by Vasco Paul Kolmorgen
04. Sep 2024

TT

[TT] [railML2] Inconsistency in documentation of <timetablePeriod> by Marharyta Vyskarka
16. Apr 2025