Report made by Citizens Grade Separation Advisory Committee, appointed by Cook County, Ill., Board of Commissioners; existing examples of grade separations; design for traffic circle without grade separation; types of construction on grade separations, two-level type, elevated type, Cook County type, and park type; traffic circle as substitute.
Relieving traffic congestion by highway grade separations or traffic circles
Am. City
American City ; 41 , n 6
1929
3 pages
5 Figs.
Article (Journal)
English
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