USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

TSI

This page shows Department of Transportation content pertaining to a specific tag. If you cannot find what you’re looking for on this page, please use the search box in the top right of our website.

Subscribe to TSI

Revision Policy for the Transportation Services Index

Description of the revision policy for the Bureau of Transportation Statistics' Transportation Services Index (TSI). The TSI is a monthly index measuring the volume of freight and passenger traffic. There is a freight, passenger, and combined index.

TSI Data Source and Data Quality Information

Information on the data sources for the Bureau of Transportation Statistics' Transportation Services Index (TSI). The TSI is a monthly index measuring the volume of freight and passenger traffic. There is a freight, passenger, and combined index.

Terminology for the Transportation Services Index

List of terms related to the Bureau of Transportation Statistics' Transportation Services Index (TSI). The TSI is a monthly index measuring the volume of freight and passenger traffic. There is a freight, passenger, and combined index.

Methodology for the Transportation Services Index

Methodology describing how the Bureau of Transportation Statistics creates the Transportation Services Index (TSI). The TSI is a monthly index measuring the volume of freight and passenger traffic. There is a freight, passenger, and combined index.

Transportation Services Index Frequently Asked Questions

Frequently asked questions and answers for the Bureau of Transportation Statistics' Transportation Services Index (TSI). The TSI is a monthly index measuring the volume of freight and passenger traffic. There is a freight, passenger, and combined index.

TSI Explainer Video: About the Transportation Services Index

Video explaining the Bureau of Transportation Statistics' Transportation Services Index (TSI). The TSI is a monthly index measuring the volume of freight and passenger traffic. There is a freight index, a passenger index, and a combined index.

Transportation Services Index and the Economy-Revisited

In 2007 the Bureau of Transportation Statistics (BTS) published a report entitled: Transportation Services Index and the Economy, on the relationship of the freight portion of the Transportation Services Index (TSI) to the growth cycles in the U.S. economy. Since that time, BTS has re-engineered...