Roundabouts in the United States

Bibliográfalaš dieđut
Searvvušdahkkit:	National Research Council (U.S.). Transportation Research Board, United States. Federal Highway Administration, American Association of State Highway and Transportation Officials
Eará dahkkit:	Rodegerdts, Lee
Materiálatiipa:	Girji
Giella:	eaŋgalasgiella
Almmustuhtton:	Washington, D.C. Transportation Research Board 2007.
Ráidu:	Report (National Cooperative Highway Research Program) 572.
Fáttát:	Traffic circles > United States > Design and construction. Roads > United States > Interchanges and intersections > Design and construction.
Liŋkkat:	Table of contents only OCLC Digital Archive

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