Observations

Feb 2026: 1.1

Updated: May 1, 2026 9:02 AM CDT

Units:

Percent Change from Preceding Period,

Seasonally Adjusted

Frequency:

Monthly

Notes

Title	Release Dates

Total Transportation Services Index	2014-10-08	2021-09-27
Combined Transportation Services Index	2021-09-28	2026-05-01

Source

U.S. Bureau of Transportation Statistics	2014-10-08	2026-05-01

Release

Transportation Services Index (TSI)	2014-10-08	2021-09-27
Transportation Services Index and Seasonally-Adjusted Transportation Data	2021-09-28	2026-05-01

Units

Percent Change from Preceding Period	2014-10-08	2026-05-01

Frequency

Monthly	2014-10-08	2026-05-01

Seasonal Adjustment

Seasonally Adjusted	2014-10-08	2026-05-01

Notes

The Transportation Services Index, or TSI, is a monthly measure of the volume of services performed by the for-hire transportation sector. The index covers the activities of for-hire freight carriers, for-hire passenger carriers, and a combination of the two. The TSI tells us how the output of transportation services has increased or decreased from month to month. The movement of the index over time can be compared with other economic measures to understand the relationship of transportation to long-term changes in the economy.	2014-10-08	2021-09-27
This data is collected by the U.S. Department of Transportation, Bureau of Transportation Statistics (BTS), Transportation Services Index available here (https://data.bts.gov/Research-and-Statistics/Transportation-Services-Index-and-Seasonally-Adjus/bw6n-ddqk).	2021-09-28	2026-05-01

Combined Transportation Services Index (TSITTLC)