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.

The Southern Company, through its subsidiaries, engages in the generation, transmission, and distribution of electricity. The company also develops, constructs, acquires, owns, and manages power generation assets, including renewable energy projects and sells electricity in the wholesale market; and distributes natural gas in Illinois, Georgia, Virginia, and Tennessee, as well as provides gas marketing services, gas distribution operations, and gas pipeline investments operations. In addition, it owns and operates nuclear, coal, hydro, cogeneration, solar, wind, battery storage, and fuel cell facilities. Further, the constructs, operates, and maintains approximately 77,900 miles of natural gas pipelines and 14 storage facilities with total capacity of 157 Bcf to provide natural gas to residential, commercial, and industrial customers. The company serves approximately 8.9 million electric and gas utility customers. Further, it develops distributed energy and resilience solutions; deploys microgrids for commercial, industrial, governmental, and utility customers; and offers digital wireless communications and fiber optics services. The Southern Company was incorporated in 1945 and is headquartered in Atlanta, Georgia.

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.

CSX Corporation, together with its subsidiaries, provides rail-based freight transportation services. The company offers rail services; and transportation of intermodal containers and trailers, as well as other transportation services, such as rail-to-truck transfers and bulk commodity operations. It also transports chemicals, agricultural and food products, minerals, automotive, forest products, fertilizers, and metals and equipment; and coal, coke, and iron ore to electricity-generating power plants, steel manufacturers, and industrial plants, as well as exports coal to deep-water port facilities. In addition, the company provides intermodal services through a network of approximately 30 terminals transporting manufactured consumer goods in containers; and drayage services, including the pickup and delivery of intermodal shipments. It serves the automotive industry with distribution centers and storage locations, as well as connects non-rail served customers through transferring products, such as plastics and ethanol from rail to trucks. The company operates approximately 20,000 route mile rail network, which serves various population centers in 26 states east of the Mississippi River, the District of Columbia, and the Canadian provinces of Ontario and Quebec, as well as owns and leases approximately 3,500 locomotives. It serves production and distribution facilities through track connections. CSX Corporation was incorporated in 1978 and is headquartered in Jacksonville, Florida.

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.

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.