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

TISA, Elektrobit and TomTom recently founded the "Open-LR e.V." association.
The foundation highlights that Open-LR as leading world standard for data referencing will be long-term accessible and available for everyone in the market. It is free of charge, constantly maintained and developed further, guaranteeing highest quality levels. More information with regard to the foundation will soon be available at www.open-lr-ev.com

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 you can subscribe for free to our OpenLR™ newsletter if you want to get the latest news, changes and announcements. 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:
  • 2013-09-18:
    • Release of OpenLR version 1.4.2
  • 2013-08-21:
    • Release of OpenLR version 1.4.1
  • 2012-12-21:
    • Release of OpenLR version 1.4.0
    • Release of OpenLR tools MapViewer and OTK version 1.4.0
  • 2012-07-11:
    • Publication of new command line toolkit OTK.
  • 2012-01-19:
    • Publication of an errata for the white paper version 1.5
  • 2012-01-17:
    • Publication of an updated white paper version 1.5
    • Release of new software packages (version 1.3.0)
  • 2011-01-21:
    • Publication of an updated white paper version 1.4
    • Release of new software packages (version 1.2.2)
  • 2010-11-23:
    • Publication of an area location proposal and call for comments
  • 2010-08-04:
    • OpenLR™ software implementation version 1.2.1 released. This version provides a new physical format datex2 which supports the Datex II protocol. Additionally a new Physical Format converter tool converts one physical format into another. An updated version of the Map Viewer tool has been released with functional updates and point location support.
  • 2010-07-14:
    • OpenLR™ software implementation version 1.2.0 released. This version adds point location support and corresponds to the white paper version 1.3.
  • 2010-05-25:
    • New white paper version 1.3 released. OpenLR™ now supports point locations and better offsets.
  • 2010-04-08:
    • The command line interface tool is available in version 1.1.1 fixing a bug with an invalid binary location reference.
  • 2010-03-22:
    • The command line interface tool and the map access tool from TomTom are now also available as packages including all required 3rd party libraries.
  • 2010-03-15:
    • Call for comments on changes for point location support and better offsets
  • 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