CSX Corporation is a transportation company. The Company provides rail, intermodal and rail-to-truck transload services and solutions to customers across an array of markets, including energy, industrial, construction, agricultural and consumer products. It provides rail-based freight transportation services, including traditional rail service, the transport of intermodal containers and trailers, as well as other transportation services such as rail-to-truck transfers and bulk commodity operations. Through its subsidiary, CSX Transportation, Inc. (CSXT), it provides a link to the transportation supply chain through its approximately 20,000 route-mile rail network and serves major population centers in 26 states east of the Mississippi River, the District of Columbia and the Canadian provinces of Ontario and Quebec. CSXT is also engaged in real estate sales, leasing, acquisition and management and development activities. It serves merchandise, intermodal, coal, and trucking businesses.