National Transportation Atlas Database (NTAD): National Highway Planning Network 1996-Present Datasets

The National Highway Planning Network (NHPN) 1996-Present dataset is as from the Federal Highway Administration (FHWA), Office of Planning, and part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics (BTS) National Transportation Atlas Database (NTAD). This dataset is a comprehensive network database of the nation's major highway system. It consists of the nation's highways comprised of Rural Arterials, Urban Principal Arterials and all National Highway System routes. The data set covers the 48 contiguous States plus the District of Columbia, Alaska, Hawaii, and Puerto Rico. The nominal scale of the data set is 1:100,000 with a maximal positional error of 80 meters.