USGS National Transportation Dataset (NTD) Downloadable Data Collection

The USGS Transportation downloadable data from The National Map (TNM) is based
on TIGER/Line data provided through U.S. Census Bureau and supplemented with HERE
road data to create tile cache base maps. Some of the TIGER/Line data includes
limited corrections done by USGS. Transportation data consists of roads, railroads,
trails, airports, and other features associated with the transport of people or
commerce. The data include the name or route designator, classification, and
location. Transportation data support general mapping and geographic information
system technology analysis for applications such as traffic safety, congestion
mitigation, disaster planning, and emergency response. The National Map
transportation data is commonly combined with other data themes, such as boundaries,
elevation, hydrography, and structures, to produce general reference base maps. The
National Map viewer allows free downloads of public domain transportation data in
either Esri File Geodatabase or Shapefile formats. For additional information on the
transportation data model, go to https://www.usgs.gov/core-science-systems/national-geospatial-program/national-map.