Q4 Freight Rates Face Surge as Truck Capacity Remains Tight

Uber Freight's Q3 Market Update reveals that the U.S. trucking market faces significant headwinds entering peak season, with constrained capacity, elevated rates, and emerging trade policy uncertainty creating a volatile operational environment. National average truckload rates reached $2.39 per mile in July, an 18% increase year-over-year, while spot pricing remained 35.6% above the prior year as of late August, despite modest seasonal easing. The core constraint stems from structural capacity loss: over 48,000 noncompliant drivers have exited the industry in the past year, and Class 8 truck backlogs represent nine months of production, meaning relief is not imminent. For supply chain professionals, this creates a critical planning window.

Shippers managing freight on a week-to-week basis face disproportionate risk if fourth-quarter demand accelerates, while carriers continue demanding double-digit contract increases for 2025 and beyond. Cross-border capacity to Mexico remains particularly tight, with Mexican-domiciled carrier counts down 6.3% and approximately 20,000 Mexican drivers losing U.S. visas since April 2025. The response is forcing logistics innovation: transloading is transitioning from emergency workaround to permanent network design, as shippers like major beverage manufacturers rethink B-1 direct-haul strategies. The September–October window presents a critical opportunity to lock in capacity and repriced routing guides before peak season.

The Outbound Tender Rejection Index (STRI.USA) stood at 13.45% as of mid-September, substantially elevated from historical norms, signaling ongoing carrier selectivity. With diesel volatility and U.S. trade policy shifts adding further complexity, shippers must move decisively now to secure transportation capacity and mitigate fourth-quarter cost exposure.