I would like to study structure of data used in various GPS navigations based on OSM. As raw OSM data are not suitable for routing, I suppse, each implementation in GPS navigation needs some changes in the data. I suppose these modified datasets can be called Derivative Database by the definition in http://opendatacommons.org/licenses/odbl/1.0/.
If derivative database or processed work is publicly used in some software tool, the license requires providing the derivative database to the recipients also in machine readable form.
OSM data are used for example by Be-On-Road. On http://www.beonroad.com/ it is posible to download data for various individual countries in files with .bmd extension. I haven’t found any specifications of this file format, so It is not possible for me to access and study the data. I can only use them in be-on-road navigation.
Are the developers of Be-On-Road fullfilling their ODbl license obligations by providing their data only in files with unknown format?