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OpenLR™ - Open, Compact and Royalty-free Dynamic Location Referencing

Welcome to the website of the OpenLR™ project. OpenLR™ is an open source software project launched by TomTom International B.V. in September 2009. This project provides a royalty-free dynamic location referencing method which enables reliable data exchange and cross-referencing using digital maps of different vendors and versions. OpenLR™ will help to enhance existing applications and will generate opportunities for new services.

Since OpenLR™ is open source everyone is invited to contribute to and to enhance the exististing solution. This website offers a reference implementation of the OpenLR method and also provides a complete documentation in terms of software documentation and a technical whitepaper. A detailed presentation on OpenLR™ also addresses both, technical and business issues.

Additonally we offer an open forum where everyone is invited to discuss topics related location referencing in general and related to OpenLR™ in particular. You can subscribe for free to our OpenLR™ newsletter if you want to get the latest news, changes and announcements and you can also report and track issues you experienced with the OpenLR™ software. A FAQ (frequently asked questions) section shall answer common questions but feel free to contact us directly if you have further questions or remarks.

The OpenLR™ team


Latest changes:
  • 2010-02-01:
    • White paper version 1.2
    • OpenLR™ software reference implementation version 1.1.0
    • New packages: Data and XML
    • New tool MapViewer draw maps based on the OpenLR map interface and provides encoding and decoding
  • 2009-12-11:
    • White paper version 1.1