Archives 01/01/06 International Mapping provides cartography for District of Columbia Transportation Map 2007 2006 2005 2004 2003 2002 2001 In January 2007, the District of Columbia Department of Transportation (DDOT) published its all new Street and Transit Map with cartography and design by International Mapping. Working from GIS databases provided by the District government, International Mapping cartographers created a detailed map of streets for the District of Columbia. Additional maps show bus and subway routes, bicycle routes, taxi zones, and evacuation routes. The new map (available in PDF format from the DDOT website, here) has a clean, clear design and contains the latest information for streets and other features.