Roundabouts: An Informational Guide-Second Edition NCHRP Report 672

摘要

In the United States, roundabouts increasingly are being used as a form of intersection control. Selecting and designing a roundabout requires a balance between transportation-oriented objectives, such as safety, operational performance, and accessibility, with other concerns, such as economics, land use, aesthetics, and the environment. First published in 2000 by the Federal Highway Administration, this guide draws its findings from established and emerging U.S. practices and from recent research. Through planning and design guidance, operational and safety performance evaluations, construction and maintenance information, and the examination of many potential roundabout applications, this report.