National Network eng; USA 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 information applies to the dataset 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 party who can be contacted for acquiring knowledge about or acquisition of the resource 2025-07-16 ISO 19139 Geographic Information - Metadata ISO/TS 19139:2007 curve 478999 National Network 2020-12-22 date identifies when the resource was brought into existence Bureau of Transportation Statistics (BTS) party who created the resource map represented in raster or vector form 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]. data is continually being updated 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 party who can be contacted for acquiring knowledge about or acquisition of the resource data is updated as deemed necessary NTAD National Transportation Atlas Database Transportation Atlas Database vector line linear Roads Road National Network Network Highway System Inventory Freight Trucks NN Truck Routes keyword identifies a particular subject or topic none USA National North America keyword identifies a location 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. limitation not listed Access Constraints: unrestricted National Transportation Atlas Database 2025-03-31 publication Bureau of Transportation Statistics (BTS) party who published the resource reference to a master dataset of which this one is a part vector data is used to represent geographic data eng; USA transportation Native Dataset Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.8.1.14362 -168.283333 -52.266666999999998 14.483333 71.433333300000001 2020-12-22 0 National Network Entity and Attribute Overview: 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. Entity and Attribute Detail Citation: https://doi.org/10.21949/1529045 Open Data Catalog 1.0 ArcGIS REST Services Directory Feature Server (WFS) 11.5 Bureau of Transportation Statistics (BTS) NTAD Program Manager 1200 New Jersey Ave. SE Washington DC 20590 United States ntad@dot.gov party who distributes the resource None. No fees are applicable for obtaining the dataset. https://doi.org/10.21949/1527998 http Open Data Catalog An ESRI Geodatabase, ESRI shapefile, or spreadsheet. online instructions for transferring data from one storage device or system to another https://doi.org/10.21949/1528028 http ArcGIS REST Services Directory Feature Server (WFS) complies with OGC WFS Map Service for visualizing geospatial information online instructions for transferring data from one storage device or system to another information applies to the 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. data is updated as deemed necessary 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 party that accepts accountability and responsability for the data and ensures appropriate care and maintenance of the resource