USDOT_BTS_NTAD_National_Network eng; USA utf8 dataset Dominic Menegus Bureau of Transportation Statistics (BTS) Geographer 202-306-1587 1200 New Jersey Ave. SE Washington DC 20590 US dominic.menegus@dot.gov pointOfContact 2026-07-15 ISO 19139 Geographic Information - Metadata ISO/TS 19139:2007 curve 478999 3857 EPSG National Network 2020-12-22 creation 2025-03-31 publication 2025-03-31 revision Bureau of Transportation Statistics (BTS) originator vector The National Network dataset is as of December 22, 2020 and is from the Bureau of Transportation Statistics (BTS) along with the Federal Highway Administration (FHWA), and part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics (BTS) National Transportation Atlas Database (NTAD). The National Network was authorized by the Surface Transportation Assistance Act of 1982 (P.L. 97-424) and specified in the U.S. Code of Federal Regulations (23 CFR 658) to require states to allow conventional combinations on "the Interstate System and those portions of the Federal-aid Primary System serving to link principal cities and densely developed portions of the states on high volume routes utilized extensively by large vehicles for interstate commerce which do not have any unusual characteristics causing current or anticipated safety problems. “The National Network (NN) includes almost all of the Interstate Highway System and other, specified non-Interstate highways. On March 31, 2025, four (4) records were updated to correct their "SIGNT1" and "SIGNN1" values. “The National Network (NN) includes almost all of the Interstate Highway System and other, specified non-Interstate highways. The network comprises more than 200,000 miles of highways. The National Network supports interstate commerce by regulating the size of trucks. This file is a geospatial representation of the National Network as described in 23 CFR 658 Appendix A and should not be interpreted as the official National Network and should not be used for truck size and weight enforcement purposes or for navigation. A data dictionary, or other source of attribute information, is accessible at https://doi.org/10.21949/1529045 The primary purpose of this geospatial data set is to serve the FHWA needs in highway planning, policy analysis, visualization of the NN database and network modelling. Acknowledgment of the Federal Highway Administration (FHWA) and the Bureau of Transportation Statistics (BTS) [distributor]. onGoing Dominic Menegus Bureau of Transportation Statistics (BTS) Geographer 202-306-1587 1200 New Jersey Ave. SE Washington DC 20590 US dominic.menegus@dot.gov pointOfContact asNeeded NTAD National Transportation Atlas Database National Transportation Atlas Database vector line linear Roads Road National Network Network Highway System Inventory Freight Trucks NN Truck Routes theme none USA National North America place none This NTAD dataset is a work of the United States government as defined in 17 U.S.C. § 101 and as such are not protected by any U.S. copyrights. This work is available for unrestricted public use. otherRestrictions Access Constraints: unrestricted National Transportation Atlas Database 2025-03-31 publication Bureau of Transportation Statistics (BTS) publisher largerWorkCitation vector eng; USA transportation Native Dataset Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.1.14362 -159.779821000356 -65.637193000361 17.9739999995336 64.860119999927 2020-12-22 0 National Network A data dictionary resource of attribute information is accessible at https://doi.org/10.21949/1529045 Bureau of Transportation Statistics (BTS) NTAD Program Manager 1200 New Jersey Ave. SE Washington DC 20590 United States ntad@dot.gov distributor None. No fees are applicable for obtaining the dataset. https://doi.org/10.21949/1527998 http Open Data Catalog Web page to view and download dataset. The file download formats available include: ESRI File Geodatabase or Shapefile, GeoPackage, Comma-Seperated Values (CSV), Microsoft Excel, GeoJSON, KML, Feature Collection, and SQLite Geodatabase. download https://doi.org/10.21949/1528028 http ArcGIS REST Services Directory Feature Server (WFS) complies with OGC WFS Map Service for visualizing geospatial information download dataset Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. Each state are recorded in excel file with National Network (NN) information. The related modifications in the geospatial database are done in the shapefile. The modified working layer shapefile contains the updated National Network geospatial data. HPMS geospatial data for 2018 was used as the source roadway geometry to build the National Network and for updating the geometry. ArcGIS Pro/ArcMap 10.4 is used. The source data used to accomplish the assignment are the Highway Performance Monitoring System (HPMS) Network 2018 Public Release (PR_2018), Federal-aid Primary (FAP) Version 2 (FAP_V2), and the descriptive information from 23 CRF658, Appendix A. asNeeded Dominic Menegus Bureau of Transportation Statistics (BTS) Geographer 202-306-1587 1200 New Jersey Ave. SE Washington DC 20590 United States dominic.menegus@dot.gov custodian