Applicability of Various Capacity Models for Single-Lane Roundabouts in Izmir, Turkey
Publication: Journal of Transportation Engineering
Volume 133, Issue 12
Abstract
Although many traffic circles have been designed in Turkey, in recent years few studies have been made on the capacity and performance of roundabouts. In practice, two major problems at intersections need to be solved: traffic accidents and limited intersection capacity. With this in mind, the applicability of various capacity models for single-lane roundabouts to six selected roundabouts in Izmir, Turkey, is discussed. The results show that the HCM2000 procedure can be used as an effective tool for an initial prediction of single-lane roundabout capacity if the lower and upper boundary limits are calibrated. But, since the research was conducted with limited data, the accuracy of the results should be tested with more data sets. Further studies should be conducted to develop a more reliable capacity and performance analysis procedure, especially for Turkey.
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Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 133 • Issue 12 • December 2007
Pages: 647 - 653
Copyright
© 2007 ASCE.
History
Received: Aug 3, 2005
Accepted: May 4, 2007
Published online: Dec 1, 2007
Published in print: Dec 2007
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