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Peak-Period Congestion on the National Highway System: 2035 Map

U.S. map showing congestion throughout California and in much of Oregon, Washington, Utah, and Arizona, most of Texas, and most of the East except central Illinois, southern Georgia, and northern Maine.

High-Resolution Images

Note

Highly congested segments are stop-and-go conditions with volume/service flow ratios greater than 0.95. Congested segments have reduced traffic speeds with volume/service flow ratios between 0.75 and 0.95.

Source

U. S. Department of Transportation, Federal Highway Administration, Office of Highway Policy Information, Highway Performance Monitoring System, and Office of Freight Management and Operations, Freight Analysis Framework, version 2.2, 2007.

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