Modeling U-turn traffic flow |
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Authors: | Jay Samuel L Combinido |
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Institution: | National Institute of Physics, University of the Philippines, Diliman, 1101 Quezon City, Philippines |
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Abstract: | 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. |
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Keywords: | Land transportation Traffic flow Numerical simulation |
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