Cass Data Shows Freight Market Tightened Further in March

Why It Matters

Tighter capacity and rising rates signal a shift from the four‑year bottom of the for‑hire cycle to an early‑cycle environment, affecting shippers’ cost structures and carriers’ pricing power.

Key Takeaways

• Cass shipments index rose 3% month‑over‑month in March.
• Freight rates jumped ~9% as volumes fell 4.5% YoY.
• TL linehaul index logged 15 straight YoY gains, up 1.8% in March.
• Driver shortage rules and higher diesel fuel tighten capacity.
• Cass processes $37 billion in freight payables, underscoring market relevance.

Pulse Analysis

The March release from Cass Information Systems underscores a freight market that is tightening faster than many leading indicators suggest. While overall shipment volumes slipped 4.5% year‑over‑year, the shipments index still posted a 3% sequential gain, and the expenditures index rose 4.9% from February. This divergence points to a steep rise in spot and contract rates—estimated at roughly 9% higher than a year ago—driven by a shrinking supply of truck capacity relative to demand.

Two forces are amplifying this pressure. First, new non‑domicile CDL regulations have curtailed driver availability just as the industry emerges from severe winter weather disruptions, limiting the pool of qualified operators. Second, diesel fuel prices have surged, prompting some carriers to sit out of the market and further compressing capacity. Together, these factors are reflected in the Outbound Tender Rejection Index, which shows carriers rejecting more loads, a classic sign of a tight market. The TL linehaul index’s 15‑month streak of year‑over‑year gains reinforces the narrative that truckload pricing is moving into a sustained upward trajectory.

Looking ahead, analysts expect the shipments index to dip another 5% year‑over‑year in April before turning positive in the second half of the year, assuming seasonal patterns hold. For shippers, the implication is higher transportation spend and a need to secure capacity well in advance, potentially through longer‑term contracts or strategic alliances. Carriers, meanwhile, can leverage the scarcity to negotiate better rates and invest in technology that mitigates driver shortages. As Cass processes $37 billion in freight payables annually, its data will remain a bellwether for broader supply‑chain dynamics throughout 2026.