Seasonally adjusted data measure the real differences in data trends by adjusting for seasonal factors, such as the change in the number of days, weekends, holidays, or other seasonal activity in a month such as vacation travel. This product uses the FRED API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.
Seasonally adjusted vehicle miles traveled - U.S. Department of Transportation, Bureau of Transportation Statistics. https://fred.stlouisfed.org/series/VMTd11/
Unadjusted vehicle miles traveled - U.S. Department of Transportation, Federal Highways Administration. Traffic Volumes and Trends. https://fred.stlouisfed.org/series/VMT/
Last Updated: June 2018