A geographic information system (GIS) displays geographic roadway data, geographic track data and geographic train position data. The GIS includes a GIS database having static roadway and track data. A computer aided dispatching (CAD) system includes a task to determine an occupied track section. A web...http://www.google.fr/patents/US7542831?utm_source=gb-gplus-shareBrevet US7542831 - Geographic information system and method for monitoring dynamic train positions
Geographic information system and method for monitoring dynamic train positions
