What does a -0.6% month-over-month decline in the TSI mean for freight rates?

A negative MoM reading typically reflects seasonal softening in freight demand and utilization rates. However, this does not necessarily translate to proportional rate decreases, as carriers may maintain pricing discipline based on fuel costs and equipment availability. The -0.6% MoM decline is moderate and consistent with December seasonality.

Why is the year-over-year growth of +0.4% significant despite the monthly decline?

The YoY positive growth indicates that December 2025 freight activity remained stronger than December 2024, suggesting the market has maintained resilience. This YoY stability is meaningful because it shows freight demand has not deteriorated structurally; the monthly dip is cyclical rather than indicative of broader contraction.

How should logistics companies use TSI data for capacity planning?

The TSI serves as a leading indicator for freight demand trends. Companies should use monthly TSI releases alongside their own demand forecasts and customer shipment pipelines to validate capacity allocation decisions. A sustained downward TSI trend would warrant equipment rationalization; conversely, upward momentum would justify capacity investments.

What sectors are most sensitive to TSI fluctuations?

Less-than-truckload (LTL), truckload, intermodal, and air freight services are most directly impacted by TSI movements. Retail, e-commerce, automotive, and consumer goods industries—which rely heavily on freight services—experience indirect effects through carrier capacity and pricing adjustments driven by TSI-correlated demand shifts.

Should the +0.4% YoY growth prompt increased capital investment in trucking?

While +0.4% YoY growth is positive, it is modest. Capital investment decisions should be based on forward guidance, customer contract growth, and longer-term TSI trends rather than a single month. A 3-6 month window of sustained positive YoY growth would be more actionable for significant capacity expansion decisions.

Demand Planning

Moderate

December 2025 Freight TSI Down 0.6% MoM, Up 0.4% YoY

The U.S. Freight Transportation Services Index (TSI) reported a modest month-over-month decline of 0.6% in December 2025, though year-over-year performance remained positive at 0.4% growth. This mixed signal reflects the typical seasonal softness at year-end while suggesting underlying freight market resilience compared to the prior December. For supply chain professionals, this data point underscores the importance of tracking leading indicators beyond single-month snapshots; the modest YoY gain indicates sustained baseline demand despite cyclical headwinds. The TSI, maintained by the Bureau of Transportation Statistics, serves as a critical barometer for freight market health across trucking, intermodal, and air services. The December decline aligns with historical seasonal patterns when post-holiday demand fades and year-end inventory adjustments occur. However, the positive year-over-year comparison suggests that freight markets have not experienced structural contraction compared to December 2024, signaling a steadier operating environment than some anticipated given macroeconomic uncertainty. Supply chain teams should interpret this data within the context of broader logistics trends: seasonal dips are normal, but the YoY stability indicates that capacity utilization and pricing may not be experiencing deflationary pressure. Organizations should continue monitoring forthcoming TSI releases and cross-referencing with fuel costs, equipment availability, and customer demand signals to validate whether the current equilibrium holds into Q1 2026.

Apr 23, 2026Source: Google News - Logistics3 min read

December Freight Activity Holds Steady Despite Seasonal Headwinds

The U.S. Freight Transportation Services Index (TSI) released by the Bureau of Transportation Statistics reported a month-over-month decline of 0.6% in December 2025, marking a modest pullback from November levels. However, the index's 0.4% year-over-year increase compared to December 2024 provides a more nuanced picture: while the freight market experienced typical seasonal softness, it did not deteriorate relative to the same period in the prior year. This stability—neither alarming contraction nor robust expansion—characterizes the current operating environment for logistics professionals navigating post-holiday demand normalization and macroeconomic uncertainty.

Seasonal Patterns and Market Resilience

December historically marks a transition period in freight markets. Post-holiday consumer spending subsides, year-end inventory adjustments kick in, and shippers typically reduce shipment volumes to manage working capital. The 0.6% MoM decline is therefore consistent with expected seasonal behavior and does not necessarily signal broader market weakness. What distinguishes this December is the positive YoY comparison, which suggests that underlying freight fundamentals remain more resilient than they were twelve months ago.

The TSI aggregates data from trucking, intermodal, and air freight services—the three pillars of U.S. freight transportation. When the index shifts, it reflects broad-based demand dynamics across industries: retail distribution networks, manufacturing supply chains, e-commerce fulfillment, and specialized logistics. The modest positive YoY growth indicates that shippers and carriers have maintained throughput and utilization despite potential economic headwinds, suggesting that capacity has not been significantly underutilized and pricing discipline has held.

Operational Implications for Supply Chain Teams

For logistics professionals, the TSI data reinforces a key principle: single-month readings require context. The December decline should not trigger alarm, but the modest YoY growth should not justify aggressive expansion either. Instead, supply chain teams should use this data point as one input among many—including customer demand pipelines, carrier spot rates, equipment availability, and fuel costs—to inform decisions about capacity, inventory positioning, and procurement timing.

Companies heavily dependent on freight services should prioritize three actions:

Monitor the Q1 2026 TSI trend: If January and February show sustained negative MoM readings despite typical post-holiday recovery, this would signal structural demand weakness warranting operational adjustments.
Validate carrier partnerships: With freight demand relatively stable on a YoY basis, this is an opportune time to renegotiate contracts, audit carrier performance, and confirm capacity commitments for the coming year.
Stress-test supply chain models: Use this period of relative stability to run scenario analyses—what happens to lead times, costs, and service levels if freight demand unexpectedly declines 5-10%, or surges due to geopolitical or tariff-driven disruptions?

Forward-Looking Perspective

The December 2025 TSI data sits at an inflection point. The freight market is neither expanding nor contracting sharply; it is consolidating. As supply chain professionals enter 2026, the priority should be on agility rather than bold directional bets. The positive YoY growth provides some confidence in baseline demand stability, but the monthly decline reminds us that seasonality and macroeconomic cycles remain powerful forces. Teams should remain vigilant for leading indicators—carrier utilization reports, spot market rates, customer order backlogs, and next month's TSI release—to detect whether the current equilibrium shifts meaningfully in either direction.

Source: U.S. Bureau of Transportation Statistics

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Frequently Asked Questions

What This Means for Your Supply Chain

Simulation Suggestion

this month

What if freight demand continues declining into Q1 2026?

Simulate a scenario where the Freight Transportation Services Index declines 1-2% month-over-month for three consecutive months (January-March 2026) due to post-holiday demand normalization and potential economic slowdown. Model the impact on trucking asset utilization, LTL network density, and intermodal terminal throughput.

Run this scenario

Simulation Suggestion

this month

What if December's seasonality masks underlying Q1 strength?

Simulate a scenario where January 2026 freight demand rebounds 2-3% MoM as post-holiday inventory replenishment and Q1 manufacturing activity accelerate. Model the operational implications for equipment positioning, driver scheduling, and carrier capacity utilization rates.