364 resultados para Highway-railroad grade crossings


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

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Transportation Department, Joint Program Office for Intelligent Transportation Systems, Washington, D.C.

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On verso: Michigan Central Railroad grade separation in foreground looking northwest beyond end of expressway. Altitude - 2500 ft.

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Mode of access: Internet.

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Mode of access: Internet.

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Cover title.

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Federal Highway Administration, Washington, D.C.

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Transportation Department, Office of University Research, Washington, D.C.