Trucking: Truckload, LTL and the Freight Cycle

Trucks move roughly 70% of US freight by weight and a larger share by value (American Trucking Associations and Bureau of Transportation Statistics series; verify the latest year), and trucking is where the freight cycle is felt first and hardest. It is two businesses that share a highway. Truckload (TL) — one shipper's freight filling a trailer from A to B — is one of the most fragmented markets in the US economy: hundreds of thousands of for-hire carriers, most with a handful of trucks, entering in booms and exiting in busts, with no network and little pricing power. Less-than-truckload (LTL) — many shippers' pallets consolidated through terminal networks — is a concentrated, high-barrier network business where density and reliability compound: Old Dominion reported an operating ratio of 71.5% in Q3 2026 (vs 74.3% a year earlier) on flat tonnage (company 8-K, 28 Oct 2026, reported), while Yellow, with a network of similar size, stopped operating on 30 Jul 2023. After the 2021 boom, truckload went through the longest freight recession in modern records (2022–25): capacity added at the peak took three years to leave. In 2026 the market turned on the supply side rather than demand: the Cass Truckload Linehaul Index rose to 154.8 in Sep 2026, +10.1% y/y, its 21st straight month of y/y growth, while Cass shipments rose only 1.9% y/y (the second y/y increase after 42 months of declines) (Cass via FreightWaves, reported). Federal enforcement of English-language proficiency (out-of-service since 25 Jun 2025) and the non-domiciled CDL final rule (in force 16 Mar 2026) removed drivers, and the 2026 diesel shock (Cass reported diesel up ~68% y/y in Sep 2026) raised costs. DAT reported national dry van spot linehaul of ~$2.26/mile (all-in with fuel ~$3.09/mile) in mid-Oct 2026. This section explains TL and LTL economics, operating ratio, density and terminals, the carrier base and owner-operators, drivers, spot and contract pricing, the cycle since 2018, Yellow, regulation, and autonomous trucks. Two companion files work through an owner-operator's cost per mile across the cycle and give a shipper's TL and LTL procurement checklist.