United States Department of Transportation
i
Roadway Widths for Low-Traffic Volume Roads
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1994-07-01
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[PDF-686.96 KB]
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Abstract:The United States has over 4.8 million km (3 million mi) of two-lane highways, and about 90 percent of these roads carry traffic volumes less than 2,000 vehicles per day. Because funding is not available to reconstruct all two-lane highways to meet current design standards of the American Association of State Highway and Transportation Officials (AASHTO), State and local highway agencies must decide which roads to reconstruct. Current design standards do not provide the guidance necessary to make safety, operations, and cost trade-offs. This investigation was undertaken to develop revised roadway width guidelines based on accident analyses, cost estimates, and operational considerations. This study was conducted through a grant from the National Cooperative Highway Research Program (NCHRP).
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Content Notes:The original format of this document was an active HTML page(s). The Federal Highway Administration converted the HTML page(s) into an Adobe® Acrobat® PDF file to preserve and support reuse of the information it contained. Preservation Date: 2020-09-16. The intellectual content of this PDF is an authentic capture of the original HTML file. Hyperlinks and other functions of the HTML webpage may have been lost, and this version of the content may not fully work with screen reading software.
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