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Knight-Swift Transportation is the largest full-truckload carrier in the US, with a diversified transportation offering. Roughly 82% of revenue derives from Knight's asset-based trucking business, with full truckload (for-hire dry van, refrigerated, and dedicated contract) making up 63% and less than truckload 19%. Truck brokerage and other asset-light logistics services make up 8% of revenue, with intermodal near 5%. Knight's intermodal operations use the Class I railroads for the underlying movement of its shipping containers and include drayage (regional trucking services to and from inland intermodal ramps/terminals). The remainder of revenue is from services offered to shippers and third-party truckers, including equipment maintenance and leasing.

Omaha, Nebraska-based Union Pacific is the largest public railroad in North America. Operating on more than 30,000 miles of track in the western two-thirds of the US, Union Pacific generated $24.5 billion of revenue in 2025 by hauling coal, industrial products, intermodal containers, agricultural goods, chemicals, fertilizers, and automotive goods. Union Pacific owns about one-fourth of Mexican railroad Ferromex and historically derives roughly 10% of its revenue hauling freight to and from Mexico.