{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["021:15"], "contactPoint": {"@type": "vcard:Contact", "fn": "FHWA-Datahub", "hasEmail": "mailto:Highway-Data@dot.gov"}, "dataQuality": true, "description": "This dataset reports the historical National Highway System 50th percentile median speeds for various roadway types, months, and vehicles on US roads.", "distribution": [{"@type": "dcat:Distribution", "describedBy": "https://data.transportation.gov/api/views/ra4w-8xud/columns.json", "describedByType": "application/json", "downloadURL": "https://data.transportation.gov/api/views/ra4w-8xud/rows.json?accessType=DOWNLOAD", "mediaType": "application/json"}, {"@type": "dcat:Distribution", "describedBy": "https://data.transportation.gov/api/views/ra4w-8xud/columns.rdf", "describedByType": "application/rdf+xml", "downloadURL": "https://data.transportation.gov/api/views/ra4w-8xud/rows.rdf?accessType=DOWNLOAD", "mediaType": "application/rdf+xml"}, {"@type": "dcat:Distribution", "describedBy": "https://data.transportation.gov/api/views/ra4w-8xud/columns.xml", "describedByType": "application/xml", "downloadURL": "https://data.transportation.gov/api/views/ra4w-8xud/rows.xml?accessType=DOWNLOAD", "mediaType": "application/xml"}, {"@type": "dcat:Distribution", "downloadURL": "https://data.transportation.gov/api/views/ra4w-8xud/rows.csv?accessType=DOWNLOAD", "mediaType": "text/csv"}], "identifier": "https://data.transportation.gov/api/views/ra4w-8xud", "issued": "2023-04-25", "keyword": ["speed data", "traffic flow"], "landingPage": "https://www.fhwa.dot.gov/policyinformation/", "language": ["en-US"], "license": "https://www.usa.gov/government-works", "modified": "2026-05-06", "programCode": ["021:009"], "publisher": {"@type": "org:Organization", "name": "Federal Highway Administration"}, "theme": ["Roadways and Bridges"], "title": "Monthly NHS Traffic Speed"}