Capacity Evaluation of Multi-lane Traffic Roundabouts
The entry capacity at a traffic roundabout is typically evaluated for each entry approach, considering the circulating flow and geometric characteristics (e.g., the US highway capacity manual model and the U.K. Linear Regression model). These models are not appropriate for analyzing multi-lane roundabouts because they do not take into account the possible unequal traffic distribution between the circulating lanes. This paper introduces a lane-based methodology that evaluates the entry capacity for each individual lane while considering the traffic distribution on the circulating lanes. The arrival and circulating flows are formulated based on drivers' lane choice patterns. The authors then modify and extend the formulae from existing models for the analysis of capacity of multi-lane roundabout. Based on the analysis, it is shown that higher capacity can be achieved when the utilization on the circulating lanes is more balanced. This result can lead to improved design and management techniques to increase the capacity of multi-lane roundabout.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/5121625
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Authors:
- Bie, Jing
- Lo, Hong K
- Wong, S C
- Publication Date: 2010-10
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: pp 245-255
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Serial:
- Journal of Advanced Transportation
- Volume: 44
- Issue Number: 4
- Publisher: John Wiley & Sons, Incorporated
- ISSN: 0197-6729
- EISSN: 2042-3195
- Serial URL: http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2042-3195
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Publication flags:
Open Access (libre)
Subject/Index Terms
- TRT Terms: Highway capacity; Roundabouts; Traffic circles; Traffic distribution; Traffic engineering; Unsignalized intersections
- Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;
Filing Info
- Accession Number: 01226236
- Record Type: Publication
- Files: TRIS
- Created Date: Nov 17 2010 7:23AM