Roundabout operations : a summary of FHWA's - 'Roundabouts: An Informational Guide'

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dc.contributor.author Krogscheepers, Christoff
dc.contributor.author Robinson, Bruce
dc.contributor.author Rodegerdts, Lee
dc.contributor.other Southern African Transport Conference (20th : 2001 : Pretoria, South Africa)
dc.date.accessioned 2008-11-14T07:38:07Z
dc.date.available 2008-11-14T07:38:07Z
dc.date.issued 2001-07
dc.description This paper was transferred from the original CD ROM created for this conference. The material on the CD ROM was published using Adobe Acrobat technology. The original CD ROM was produced by Document Transformation Technologies Postal Address: PO Box 560 Irene 0062 South Africa. Tel.: +27 12 667 2074 Fax: +27 12 667 2766 E-mail: doctech@doctech.co.za URL: http://www.doctech.co.za en_US
dc.description.abstract Paper presented at the 20th Annual South African Transport Conference 16 - 20 July 2001 "Meeting the transport challenges in Southern Africa", CSIR International Convention Centre, Pretoria, South Africa. ABSTRACT: As in many other countries, roundabouts are receiving renewed interest in South Africa.The Federal Highway Administration (FHWA)publication, 'Roundabouts: An Informational Guide', presents a comprehensive discussion of roundabout planning, performance analysis, and design. No specific local guidelines for roundabouts have been developed and local engineers rely mostly on English and Australian methods. This guide provides another useful tool for the traffic engineering toolbox. One of its features is the definition of six categories of roundabouts, ranging from small, urban mini-roundabouts to relatively large, rural double-lane roundabouts. Distinctions have been made between the various categories in terms of characteristics, planning procedures, operational analysis, and design treatments. This paper presents the various elements of operational analysis included in the guide, including measures of capacity and performance analysis,and provides a discussion of many of the decisions made during the development of the guide. The paper presents capacity curves for urban compact roundabouts, single-lane roundabouts, and double-lane roundabouts, as well as adjustment factors to account for the effect of short lanes (flaring). The paper also presents the methodologies and recommended practices for determining degree of saturation, delay, and queuing. en_US
dc.identifier.citation Krogscheepers, C, Robinson, B & Rodegerdts, L 2001, 'Roundabout operations : a summary of FHWA's - 'Roundabouts: An Informational Guide',' Paper presented to the 20th Annual South African Transport Conference, South Africa, 16 - 20 July. en_US
dc.identifier.isbn 0620277653
dc.identifier.uri http://hdl.handle.net/2263/7929
dc.language eng
dc.language.iso en en_US
dc.publisher SATC en_US
dc.relation.ispartof SATC 2001
dc.rights University of Pretoria en_US
dc.subject Roundabout planning en_US
dc.subject Traffic engineering en_US
dc.subject.lcsh Transportation -- South Africa -- Congresses en
dc.subject.lcsh Traffic circles -- South Africa -- Planning en
dc.subject.lcsh Traffic circles -- South Africa -- Congresses en
dc.title Roundabout operations : a summary of FHWA's - 'Roundabouts: An Informational Guide' en_US
dc.type Presentation en_US


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