Office of Operations Freight Management and Operations

Current Train Volumes Compared to Current Capacity Map

U.S. map showing congestion on lines in central California, along the Columbia River on the Oregon-Washington border, around Kansas City, eastern Iowa, Chicago, and northern Mississippi.

High-Resolution Images


Level of Service (LOS) A through F approximates the conditions described in Transportation Research Board, Highway Capacity Manual 2000.


Association of American Railroads, National Rail Infrastructure Capacity and Investment Study, prepared by Cambridge Systematics, Inc. (Washington, DC: September 2007), figure 4.4, page 4-10.

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