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National Transportation Atlas Database

The National Transportation Atlas Databases 2006 (NTAD2006) is a set of nationwide geographic databases of transportation facilities, transportation networks, and associated infrastructure. These datasets include spatial information for transportation modal networks and intermodal terminals, as well as the related attribute information for these features. Metadata documentation, as prescribed by the Federal Geographic Data Committee, is also provided for each database. The data on this twin set of compact disks (CD-ROMs) support research, analysis, and decisionmaking across all modes of transportation. They are most useful at the national level, but have major applications at regional, state, and local scales throughout the transportation community.

These databases do not provide explicit connections between modal networks and terminals. RITA/BTS plans to enhance future releases to provide intermodal connectivity, additional attributes, and passenger and commodity flow information.

• NTAD 2007
• NTAD 2006
• NTAD 2005
• NTAD 2004
• NTAD 2003
• NTAD 2002
• NTAD 2001
• NTAD 2000
• NTAD 1997
• NTAD 1996