38 resultados para Visibility criterion
em University of Michigan
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"The project reported herein was performed pursuant to a grant from the U.S. Office of Education, Department of Health, Education and Welfare."
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National Highway Traffic Safety Administration, Washington, D.C.
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Texas Department of Transportation, Austin
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National Highway Traffic Safety Administration, Washington, D.C.
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Texas Department of Transportation, Austin
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National Highway Traffic Safety Administration, Washington, D.C.
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National Highway Traffic Safety Administration, Washington, D.C.
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National Highway Traffic Safety Administration, Washington, D.C.
Relative visibility of increased legend size vs. brighter materials for traffic signs. Final report.
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Federal Highway Administration, Office of Safety and Traffic Operations Research and Development, McLean, Va.
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Federal Railroad Administration, Office of Research, Development and Demonstrations, Washington, D.C.
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National Highway Traffic Safety Administration, Washington, D.C.
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National Highway Safety Bureau, Washington, D.C.
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Federal Highway Administration, Office of Research, Washington, D.C.
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National Highway Traffic Safety Administration, Washington, D.C.