J.B. Hunt Transport Services, Inc. provides surface transportation, delivery, and logistic services in the United States. It operates through five segments: Intermodal (JBI), Dedicated Contract Services (DCS), Integrated Capacity Solutions (ICS), Final Mile Services (FMS), and Truckload (JBT). The JBI segment offers intermodal freight solutions. It operates 118,171 pieces of company-owned trailing equipment; owns and maintains its chassis fleet of 100,825 units; and manages a fleet of 5,944 company-owned tractors, 436 independent contractor trucks, and 7,567 company drivers. The DCS segment designs, develops, and executes supply chain solutions that support various transportation networks. As of December 31, 2023, it operated 12,574 company-owned trucks, 674 customer-owned trucks, and 4 contractor trucks. The company also operates 27,194 owned pieces of trailing equipment and 5,406 customer-owned trailers. The ICS segment provides freight brokerage and transportation logistics solutions; flatbed, refrigerated, expedited, and less-than-truckload, as well as dry-van and intermodal solutions; online multimodal marketplace; and logistics management for customers to outsource their transportation functions. The FMS segment offers delivery services through 1,166 company-owned trucks, 225 customer-owned trucks, and 20 independent contractor trucks; and 1,212 owned pieces of trailing equipment and 102 customer-owned trailers. The JBT segment provides dry-van freight services by utilizing tractors and trailers operating over roads and highways through 27 company-owned tractors and 13,561 company-owned trailers. It also transports or arranges for the transportation of freight, such as general merchandise, specialty consumer items, appliances, forest and paper products, food and beverages, building materials, soaps and cosmetics, automotive parts, agricultural products, electronics, and chemicals. The company was incorporated in 1961 and is headquartered in Lowell, Arkansas.

Landstar System, Inc. provides integrated transportation management solutions in the United States, Canada, Mexico, and internationally. It operates through two segments: Transportation Logistics and Insurance. The Transportation Logistics segment offers a range of transportation services, including truckload and less-than-truckload transportation, rail intermodal, air cargo, ocean cargo, expedited ground and air delivery of time-critical freight, heavy-haul/specialized, U.S.-Canada and U.S.-Mexico cross-border, intra-Mexico, intra-Canada, project cargo, and customs brokerage, as well as offers transportation services to other transportation companies, such as third party logistics and less-than-truckload services. It provides truck services through dry and specialty vans of various sizes, unsided/platform trailers, temperature-controlled vans, and containers; rail intermodal services through contracts with domestic and Canadian railroads, certain short-line railroads, and asset-based intermodal equipment; and domestic and international air and ocean services. This segment serves the automotive parts and assemblies, consumer durables, building products, metals, chemicals, foodstuffs, heavy machinery, retail, electronics, and military equipment industries. The Insurance segment provides risk and claims management services; and reinsures risks of the company's independent contractors. It markets its services through independent commission sales agents and third party capacity providers. Landstar System, Inc. was incorporated in 1991 and is headquartered in Jacksonville, Florida.

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.

Marten Transport, Ltd. operates as a temperature-sensitive truckload carrier for shippers in the United State, Mexico, and Canada. The company operates through four segments: Truckload, Dedicated, Intermodal, and Brokerage. The Truckload segment transports food and other consumer packaged goods that require a temperature-controlled or insulated environment, as well as dry freight; and regional short-haul and medium-to-long-haul full-load transportation services. The Dedicated segment offers customized transportation solutions for individual customers' requirements using temperature-controlled trailers, dry vans, and other specialized equipment. The Intermodal segment transports customers' freight utilizing its refrigerated containers and temperature-controlled trailers on railroad flatcars for portions of trips, as well as using tractors and contracted carriers. The Brokerage segment develops contractual relationships with and arranges for third-party carriers to transport freight for customers in temperature-controlled trailers and dry vans. As of December 31, 2023, the company operated a fleet of 3,349 tractors, that included 3,255 company-owned tractors and 94 tractors supplied by independent contractors. Marten Transport, Ltd. was founded in 1946 and is headquartered in Mondovi, Wisconsin.

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.

Covenant Logistics Group, Inc., together with its subsidiaries, provides transportation and logistics services in the United States. It operates through four segments: Expedited, Dedicated, Managed Freight, and Warehousing. The Expedited segment primarily provides truckload services with high service freight and delivery standards, such as 1,000 miles in 22 hours or 15-minute delivery windows. Its Dedicated segment provides customers with committed truckload capacity over contracted periods with the goal of three to five years in length using equipment either owned or leased by the company. The Managed Freight segment offers brokerage services, including logistics capacity by outsourcing the carriage of customers' freight to third parties; and transport management services, such as logistics services on a contractual basis to customers who prefer to outsource their logistics needs. Its Warehousing segment provides day-to-day warehouse management services to customers, as well as shuttle and switching services related to shuttling containers and trailers. The company also engages in used equipment sales and leasing business. It serves transportation companies, such as parcel freight forwarders, less-than-truckload carriers, and third-party logistics providers; and traditional truckload customers, including manufacturers, retailers, and food and beverage shippers. The company was formerly known as Covenant Transportation Group, Inc. and changed its name to Covenant Logistics Group, Inc. in July 2020. Covenant Logistics Group, Inc. was founded in 1986 and is based in Chattanooga, Tennessee.