21 resultados para safer speeds
em University of Michigan
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Texas Department of Transportation, Austin
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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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Texas Department of Transportation, Austin
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Mode of access: Internet.
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Peter Norbeck, chairman.
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Mode of access: Internet.
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"Aeronautical Research Laboratory, Contract no. AF 33(616)-2170, Project no. 1366."
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Papers presented at a conference.
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On cover: Illinois traffic safety programs, report of evaluation or assessment.