Monthly NHS Traffic Speed

U.S Department of Transportation

Updated Oct 25, 2026

About this dataset

This dataset reports the historical National Highway System 50th percentile median speeds for various roadway types, months, and vehicles on US roads.

Data and resources (3)

CSV
Monthly NHS Traffic Speed
Modified Jul 25, 2026Table preview available
Open link: Monthly NHS Traffic Speed Preview table: Monthly NHS Traffic Speed
JSON
Monthly NHS Traffic Speed
Modified Jul 25, 2026JSON preview available
Open link: Monthly NHS Traffic Speed Preview JSON: Monthly NHS Traffic Speed
XSL
Monthly NHS Traffic Speed
Modified Aug 25, 2026Text preview available
Open link: Monthly NHS Traffic Speed Preview text: Monthly NHS Traffic Speed

Prototype by Datopian · not an official government website · data from data.virginia.gov