Freight Transportation Services Index (TSI)

The Freight Transportation Services Index (TSI) measures the overall volume of freight moved across the U.S. economy using various transportation methods like trucking, rail, air, and water. It indicates the demand for freight services, reflecting economic activity and supply chain health. When TSI rises, it suggests increased freight movement and economic growth; when it declines, it may signal slowdown or reduced industrial activity. The index helps businesses, policymakers, and analysts assess trends in trade, manufacturing, and logistics performance.