Union Pacific Corporation, through its subsidiary, Union Pacific Railroad Company, operates in the railroad business in the United States. The company offers transportation services for grain and grain products, fertilizers, food and refrigerated products, and coal and renewables to grain processors, animal feeders, ethanol producers, renewable biofuel producers, and other agricultural users; and construction products, industrial chemicals, plastics, forest products, specialized products, metals and ores, petroleum, liquid petroleum gases, soda ash, and sand, as well as finished automobiles, automotive parts, and merchandise in intermodal containers. Union Pacific Corporation was founded in 1862 and is headquartered in Omaha, Nebraska.

Canadian Pacific Kansas City Limited, together with its subsidiaries, owns and operates a transcontinental freight railway in Canada, the United States, and Mexico. The company transports bulk commodities, including grain, coal, potash, fertilizers, and sulphur; merchandise freight, such as forest products, energy, chemicals and plastics, metals, minerals, consumer products, and automotive; and intermodal traffic comprising retail goods in overseas containers. It also provides rail and intermodal transportation services over a network of approximately 20,000 miles serving business centres. The company was formerly known as Canadian Pacific Railway Limited and changed its name to Canadian Pacific Kansas City Limited in April 2023. Canadian Pacific Kansas City Limited was incorporated in 1881 and is headquartered in Calgary, Canada.

Canadian National Railway Company, together with its subsidiaries, engages in the rail, intermodal, trucking, and marine transportation and logistics business in Canada and the United States. The company provides rail services, which include equipment, custom brokerage services, transloading and distribution, business development and real estate, and private car storage services; and intermodal services, such as temperature controlled cargo, port partnerships, and logistics parks. It offers trucking services, such as door-to-door services, import and export dray, interline services, and specialized services, comprising flatbed trucks, on-deck mobile transport trays, expedited cargo, and permit/overweight services; and supply chain services. It serves automotive, coal, fertilizers, temperature controlled cargo, forest products, dimensional, grain, metal and minerals, petroleum and chemicals, consumer goods, and third party logistics applications. The company operates a rail network of approximately 20,000 route-miles of track and shipping spanning. Canadian National Railway Company was incorporated in 1919 and is headquartered in Montreal, Canada.

Norfolk Southern Corporation, together with its subsidiaries, engages in the rail transportation of raw materials, intermediate products, and finished goods in the United States. The company transports agriculture, forest, and consumer products comprising soybeans, wheat, corn, fertilizers, livestock and poultry feed, food products, food oils, flour, sweeteners, ethanol, lumber and wood products, pulp board and paper products, wood fibers, wood pulp, beverages, and canned goods; chemicals consist of sulfur and related chemicals, petroleum products comprising crude oil, chlorine and bleaching compounds, plastics, rubber, industrial chemicals, chemical wastes, sand, and natural gas liquids; metals and construction materials, such as steel, aluminum products, machinery, scrap metals, cement, aggregates, minerals, clay, transportation equipment, and military-related products; and automotive, including finished motor vehicles and automotive parts, as well as coal. It also transports overseas freight through various Atlantic and Gulf Coast ports; and operates an intermodal network. As of December 31, 2023, the company operated approximately 19,100 route miles in 22 states and the District of Columbia. Norfolk Southern Corporation was incorporated in 1980 and is headquartered in Atlanta, Georgia.

GATX Corporation, together its subsidiaries, operates as railcar leasing company in the United States, Canada, Mexico, Europe, and India. It operates through three segments: Rail North America, Rail International, and Portfolio Management. The company leases tank and freight railcars, and locomotives for petroleum, chemical, food/agriculture, and transportation industries. It also offers maintenance services, including the interior cleaning of railcars, routine maintenance and repair of car body and safety appliances, regulatory compliance works, wheelset replacements, interior blast and lining, exterior blast and painting, and car stenciling services. In addition, the company manufactures commercial aircraft jet engines and leases aircraft spare engines; and owns and manages tank containers that are leased to chemical, industrial gas, energy, food, cryogenic and pharmaceutical industries, and tank container operators, as well as provides tank container sourcing, remarketing, and inspection and maintenance services. As of December 31, 2023, it owned and operated a fleet of approximately 148,500 railcars; 493 four-axle and 30 six-axle locomotives; 399 aircraft spare engines; and 23,931 tank containers. GATX Corporation was founded in 1898 and is headquartered in Chicago, Illinois.

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.

Trinity Industries, Inc. provides rail transportation products and services under the TrinityRail name in North America. It operates in two segments, Railcar Leasing and Management Services Group, and Rail Products Group. The Railcar Leasing and Management Services Group segment leases freight and tank railcars; originates and manages railcar leases for third-party investors; and provides fleet maintenance and management services. As of December 31, 2023, it had a fleet of 109,295 railcars. This segment serves industrial shipper and railroad companies operating in agriculture, construction and metals, consumer products, energy, and refined products and chemicals markets. The Rail Products Group segment manufactures freight and tank railcars for transporting various liquids, gases, and dry cargo; and offers railcar maintenance and modification services. This segment serves railroads, leasing companies, and industrial shippers of products in the agriculture, construction and metals, consumer products, energy, and refined products and chemicals markets. It sells or leases products and services through its own sales personnel and independent sales representatives. The company was incorporated in 1933 and is headquartered in Dallas, Texas.

FreightCar America, Inc., through its subsidiaries, engages in design, manufacture, and sale of railcars and railcar components for the transportation of bulk commodities and containerized freight products in the United States and Mexico. It operates in two segments, Manufacturing and Parts. The company offers a range of railcars, including open top hoppers, mill gondola cars, intermodal and non-intermodal flat cars, coal cars; bulk commodity cars covered hopper cars, coil steel cars, boxcars, woodchip hoppers, aluminum vehicle carriers, and articulated bulk container railcars. It also sells used railcars; rebuilds, converts, and leases railcars; and sells forged, cast, and fabricated parts for various railcars. The company's customers primarily include shippers, railroads, and financial institutions. FreightCar America, Inc. was founded in 1901 and is headquartered in Chicago, Illinois.