The Transportation Services Index (TSI), created by the US Department of Transportation (DOT), Bureau of Transportation Statistics (BTS), measures the volume of freight and passengers moved monthly by the for-hire transportation sector in the United States. BTS produces three indexes: a freight index, a passenger index, and a combined index.... Read more →


Developed and periodically updated by Michael Sivak, Sivak Applied Research. Last updated on July 19, 2021. The new values since the previous update are in blue. The changes are in percent relative to the corresponding month in 2019. They are adjusted for population (all but price of gasoline) and for... Read more →