{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["021:15"], "contactPoint": {"@type": "vcard:Contact", "fn": "Office of Highway Policy Information", "hasEmail": "mailto:PolicyInfoFeedback@dot.gov"}, "dataQuality": true, "description": "Miles of the National Highway System (NHS) by functional system for each of the 50 states, DC, and Puerto Rico from FHWA Highway Statistics table HM-41.", "distribution": [{"@type": "dcat:Distribution", "describedBy": "https://data.transportation.gov/api/views/izv8-vmu6/columns.json", "describedByType": "application/json", "downloadURL": "https://data.transportation.gov/api/v3/views/izv8-vmu6/query.json?accessType=DOWNLOAD", "mediaType": "application/json"}, {"@type": "dcat:Distribution", "describedBy": "https://data.transportation.gov/api/views/izv8-vmu6/columns.xml", "describedByType": "application/xml", "downloadURL": "https://data.transportation.gov/api/v3/views/izv8-vmu6/export.xml?accessType=DOWNLOAD", "mediaType": "application/xml"}, {"@type": "dcat:Distribution", "downloadURL": "https://data.transportation.gov/api/v3/views/izv8-vmu6/export.csv?accessType=DOWNLOAD", "mediaType": "text/csv"}], "identifier": "https://data.transportation.gov/api/views/izv8-vmu6", "issued": "2025-04-21", "keyword": ["highway performance monitoring system", "highway statistics", "hppi", "miles", "nhs"], "landingPage": "https://www.fhwa.dot.gov/policyinformation/statistics.cfm", "language": ["en-US"], "license": "https://www.usa.gov/government-works", "modified": "2026-04-24", "primaryITInvestmentUII": "021-099281808", "programCode": ["021:009"], "publisher": {"@type": "org:Organization", "name": "Federal Highway Administration"}, "spatial": "State", "theme": ["Roadways and Bridges"], "title": "National Highway System (NHS) Length by Functional System, 2000 - 2009, 2011 - 2024 (HM-41)"}