57 resultados para road-rail level crossings

em University of Michigan


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Federal Highway Administration, Washington, D.C.

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Federal Highway Administration, Office of Research, Development and Technology, Washington, D.C.

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Texas Department of Transportation, Austin

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Federal Highway Administration, Traffic Systems Division, Washington, D.C.

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Transportation Systems Center, Cambridge, Mass.

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Federal Highway Administration, Office of Research and Development, Washington, D.C.

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Federal Highway Administration, Offices of Research and Development, Washington, D.C.

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"July 9th, 1835"--Page 30.