TFI International Inc., together with its subsidiaries, provides transportation and logistics services in the United States and Canada. The company operates through Package and Courier, Less-Than-Truckload (LTL), Truckload (TL), and Logistics segments. The Package and Courier segment engages in the pickup, transport, and delivery of items in North America. The LTL segment is involved in the pickup, consolidation, transportation, and delivery of smaller loads. The TL segment offers expedited transportation, flatbed, tank, container, and dedicated services. This segment also carries full loads directly from the customer to the destination using a closed van or specialized equipment. The Logistics segment provides asset-light logistics services, including brokerage, freight forwarding, and transportation management, as well as small package parcel delivery. As of December 31, 2023, it operates 11,455 trucks, 34,599 trailers, and 7,504 independent contractors. The company was formerly known as TransForce Inc. and changed its name to TFI International Inc. in December 2016. TFI International Inc. was founded in 1957 and is headquartered in Saint-Laurent, Canada.

Saia, Inc., together with its subsidiaries, operates as a transportation company in North America. The company provides less-than-truckload services for shipments between 100 and 10,000 pounds; and other value-added services, including non-asset truckload, expedited, and logistics services. It also offers other value-added services, including non-asset truckload, expedited, and logistics services. As of December 31, 2022, it operated 191 owned and leased facilities; and owned approximately 6,200 tractors and 20,800 trailers. The company operates 200 terminals. The company was formerly known as SCS Transportation, Inc. and changed its name to Saia, Inc. in July 2006. Saia, Inc. was founded in 1924 and is headquartered in Johns Creek, Georgia.

Knight-Swift Transportation Holdings Inc., together with its subsidiaries, provides freight transportation services in the United States and Mexico. The company operates through four segments: Truckload, Less-than-truckload (LTL), Logistics, and Intermodal. The Truckload segment provides transportation services, which include irregular route and dedicated, refrigerated, expedited, flatbed, and cross-border operations. This segment operated an average of 20,948 tractors, which comprised 18,821 company tractors and 2,127 independent contractor tractors, as well as 87,865 trailers. The LTL segment provides regional LTL transportation services through a network of approximately 120 service centers; and offers national coverage through partner carrier outside the network. This segment operated an average of 3,201 tractors and 8,482 trailers. The Logistic segment offers brokerage and other freight management services through third-party transportation providers and equipment. The Intermodal segment offers transportation services, including freight through third-party intermodal rail services on trailing equipment, such as containers and trailers on flat cars; and drayage services. This segment operated an average of 639 tractors and 12,730 intermodal containers. The company also provides repair and maintenance shop, equipment leasing, warranty, and insurance services; and warehousing and driving academy services, as well as manufactures trailer parts. It serves retail, food and beverage, consumer and paper products, transportation and logistics, housing, and building, automotive, and manufacturing industries. Knight-Swift Transportation Holdings Inc. was incorporated in 1989 and is headquartered in Phoenix, Arizona.

Schneider National, Inc., together with its subsidiaries, provides surface transportation and logistics solutions in the United States, Canada, and Mexico. It operates through three segments: Truckload, Intermodal, and Logistics. The Truckload segment offers over the road freight transportation services primarily through dry van, bulk, temperature-controlled, and flat-bed trailers across either network or dedicated configurations. The Intermodal segment provides door-to-door container on flat car services through a combination of rail and dray transportation using company-owned containers, chassis, and trucks. The Logistics segment offers asset-light freight brokerage, supply chain, warehousing, and import/export services to manage and move its customers' freight. The company leases equipment, such as trucks to owner-operators; and provides insurance for the company drivers and owner-operators. Schneider National, Inc. was founded in 1935 and is headquartered in Green Bay, Wisconsin.

Hub Group, Inc., a supply chain solutions provider, offers transportation and logistics management services in North America. The company's transportation services include intermodal, truckload, less-than-truckload, flatbed, temperature-controlled, and dedicated and regional trucking, as well as final mile, railcar, small parcel, and international transportation. Its logistics services comprise full outsource logistics solution, transportation management, freight consolidation, warehousing and fulfillment, final mile delivery, and parcel and international services. The company also provides dry van, expedited, less-than-truckload, refrigerated, and flatbed truck brokerage services. It offers a fleet of approximately 2,300 tractors, 460 independent owner-operators, and 4,300 trailers to its customers, as well as the management and infrastructure. The company serves a range of industries, including retail, consumer products, and durable goods. As of December 31, 2023, it owned approximately 50,000 dry, 53-foot containers, as well as 900 refrigerated and 53-foot containers. The company was founded in 1971 and is headquartered in Oak Brook, Illinois.

Werner Enterprises, Inc., together with its subsidiaries, engages in transporting truckload shipments of general commodities in interstate and intrastate commerce in the United States, Mexico, and internationally. The company operates through two segments, Truckload Transportation Services and Werner Logistics. The Truckload Transportation Services segment operates a fleet of medium-to-long-haul vans that transports various consumer nondurable products and other commodities in truckload quantities using dry van trailers; the expedited fleet, which offers time-sensitive truckload services using driver teams; a regional short-haul fleet that provides truckload van service in the United States; and temperature-controlled fleet, which offers truckload services for temperature-sensitive products using temperature-controlled trailers. This segment provides truckload services to retail distribution centers or manufacturing facilities using dry vans or trailers to transport retail store merchandise, consumer products, food and beverage products, and manufactured products. As of December 31, 2023, it had a fleet of 8,000 trucks, which included 7,740 company-operated, as well as 260 owned and operated by independent contractors; and 30,810 trailers that comprised dry vans, flatbeds, temperature-controlled, and other trailers. The Werner Logistics segment provides non-asset-based transportation and logistics services, including truck brokerage; logistics management services and solutions; rail transportation through alliances with rail and drayage providers; and residential and commercial deliveries of large or heavy items using liftgate straight trucks. As of December 31, 2023, this segment operated 35 drayage tractors and 115 delivery trucks. It also sells used trucks and trailers; and trades used trucks to original equipment manufacturers. The company was founded in 1956 and is headquartered in Omaha, Nebraska.

Heartland Express, Inc., together with its subsidiaries, operates as a short-to-medium, and long-haul truckload carrier in the United States and Canada. It primarily provides nationwide asset-based dry van truckload service for shippers; cross-border freight and other transportation services; and temperature-controlled truckload services. The company offers its services under the Heartland Express and Millis Transfer brand names. It primarily serves retailers and manufacturers in consumer goods, appliances, food products, and automotive industries. The company was founded in 1978 and is headquartered in North Liberty, Iowa.

P.A.M. Transportation Services, Inc., through its subsidiaries, operates as a truckload transportation and logistics company in the United States, Mexico, and Canada. The company operates a truckload dry van carrier that transports general commodities, such as automotive parts; expedited goods; consumer goods, such as general retail store merchandise; and manufactured goods, including heating and air conditioning units. The company also provides brokerage and logistics services. As of December 31, 2023, it operated a fleet of 2,200 trucks, which included 300 independent contractor trucks; and 8,567 trailers. The company was founded in 1980 and is headquartered in Tontitown, Arkansas.