Modeling U-turn traffic flow

Modeling U-turn traffic flow

Median U-turns are sometimes installed to improve the traffic flow at busy intersections by eliminating left turns. Using a microscopic traffic model, we confirmed the presence of transitions from free flow to congested flow with increasing car inflow density. In addition, our proposed rules inside...

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Bibliographic Details
Published in:Physica A Vol. 389; no. 17; pp. 3640 - 3647
Main Authors: Combinido, Jay Samuel L., Lim, May T.
Format: Journal Article
Language:English
Published: Elsevier B.V 01-09-2010
Subjects:
Asymmetry
Automobiles
Automotive engineering
Cars
Density
Intersections
Land transportation
Mathematical models
Numerical simulation
Traffic flow
Land transportation
Numerical simulation
Traffic flow
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Summary:Median U-turns are sometimes installed to improve the traffic flow at busy intersections by eliminating left turns. Using a microscopic traffic model, we confirmed the presence of transitions from free flow to congested flow with increasing car inflow density. In addition, our proposed rules inside a U-turn curve, which accounted for safety issues and an asymmetric lane changing behavior (outer-to-inner vs. inner-to-outer lane transitions), predicted the speed distribution of cars after the U-turn curve. We found that U-turn curves installed for improving traffic flow at busy intersections produced their desired effects only when there is minimal interaction between cars.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0378-4371
1873-2119
DOI:10.1016/j.physa.2010.04.009