742 resultados para Transportation Research Board, Washington, D.C.
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Mode of access: Internet.
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Federal Highway Administration, Washington, D.C.
Effectiveness of changeable message signs in controlling vehicle speeds in work zones. Final report.
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Virginia Department of Transportation, Richmond
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Federal Railroad Administration, Office of Research, Development and Demonstrations, Washington, D.C.
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Federal Highway Administration, Office of Research, Washington, D.C.
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Arizona Department of Transportation, Phoenix
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Federal Transit Administration, Washington, D.C.
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National Highway Traffic Safety Administration, Washington, D.C.
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Federal Highway Administration, Washington, D.C.
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Federal Highway Administration, Washington, D.C.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Transportation Department, Washington, D.C.
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National Highway Traffic Safety Administration, Office of Research and Development, Washington, D.C.