982 resultados para Control signals
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Federal Energy Administration, Office of Transportation Policy and Research, Washington, D.C.
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Federal Highway Administration, Office of Research and Development, Washington, D.C.
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Mode of access: Internet.
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Federal Highway Administration, Baton Rouge, Fla.
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Transportation Systems Center, Cambridge, Mass.
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Transportation Systems Center, Cambridge, Mass.
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Federal Highway Administration, Washington, D.C.
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Jan. 1979.
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Mode of access: Internet.
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Updated by continuing supplements and cumulated irregularly.
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"Adopted March 1990."
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"March 10, 2011."--cover letter.
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These standards, covering highway work zone traffic control devices, were developed for suppliers and contractors doing work for the Illinois Dept. of Transportation.
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"Final Report, November 1997-October 1999."
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Cover title.