The U.S. Department of Transportation’s Bureau of Transportation Statistics, a part of the Research and Innovative Technology Administration, has released the 2012 edition of the National Transportation Atlas Databases. he 2012 edition features updated datasets from last year’s NTAD; also, substantial revisions were made to national parks, ports, National Bridge Inventory and railways.
This year’s NTAD consists of 32 datasets, 16 of which were updated for this 2012 release. The NTAD also includes intermodal terminals, national railway crossings, nonattainment areas and transit rail lines and stations, among other data layers.
NTAD 2012 is provided in shapefile format, which is compatible with most Geographical Information Systems software. It is provided with International Organization for Standards-formatted metadata for all shapefiles for the first time this year.
For technical information and copies, call Mark Bradford at 202-366-6810.