U.S. Freight Railroad Transport Traffic

Measured in ton-miles (the movement of one ton of freight one mile), railroads move 42 percent of intercity freight, more than any other mode of transportation. The rail share of intercity ton-miles has been trending slightly upward over the past 10 to 15 years, after falling steadily for decades. In part because railroads' rates are so low compared to their competitors, their 42 percent of ton-mile traffic generates less than 10 percent of intercity freight revenues. Railroads' share of intercity freight revenue has been trending down for decades, a reflection of the intensity of the competition for intercity freight transportation in the United States and of the significant rate reductions railroads have passed through to their customers.

Coal is the most important single commodity carried by rail. In 2002, it accounted for 44 percent of tonnage and 21 percent of revenue for Class I railroads. The vast majority of coal in the United States is used to generate electricity at coal-fired power plants. Coal accounts for half of all U.S. electricity generation, far more than any other fuel source, and railroads handle approximately two-thirds of all U.S. coal shipments.

Other major commodities carried by rail include chemicals, including massive amounts of industrial chemicals, plastic resins, and fertilizers; grain and other agricultural products; non- metallic minerals such as phosphate rock, sand, and crushed stone and gravel; food and food products; steel and other primary metal products; forest products, including lumber, paper, and pulp; motor vehicles and motor vehicle parts; and waste and scrap materials, including scrap iron and scrap paper.

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