955 resultados para Highway-railroad grade crossings


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Turner-Fairbank Highway Research Center, Office of Safety Research and Development, McLean, Va.

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National Highway Traffic Safety Administration, Office of Driver and Pedestrian Safety, Washington, D.C.

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Connecticut Department of Transportation, Bureau of Planning and Research, Wethersfield

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Transportation Department, Secretary of Transportation, Washington, D.C.

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Indiana Department of Transportation, Indianapolis

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Federal Highway Administration, Washington, D.C.