For data import into Visum, the OpenStreetMap data must be available as an *.osm file, in an XML format defined by OpenStreetMap or as compressed archive file, in the *bzip format. You can download the raw data from various websites and edit the data later.
For small sections of the network, you can download such files directly from the OpenStreetMap website. For larger territories such as states or provinces, you may obtain files from different services, e.g. Geofabrik http://www.geofabrik.de/) or CloudMade (http://cloudmade.com) as zip archives. You can import a subnetwork if you define a section in the import settings. Using the free tool Osmosis (http://wiki.openstreetmap.org/wiki/Osmosis), you can also filter data by content-based criteria before data import.
