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Modeling U-turn traffic flow

Author

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  • Combinido, Jay Samuel L.
  • Lim, May T.

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.

Suggested Citation

  • Combinido, Jay Samuel L. & Lim, May T., 2010. "Modeling U-turn traffic flow," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 389(17), pages 3640-3647.
    • Handle: RePEc:eee:phsmap:v:389:y:2010:i:17:p:3640-3647
    DOI: 10.1016/j.physa.2010.04.009
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    References listed on IDEAS

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    1. Nagatani, Takashi, 2000. "Phase diagrams of noisy traffic states in the presence of a bottleneck," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 280(3), pages 602-613.
    2. D. Helbing, 2009. "Derivation of a fundamental diagram for urban traffic flow," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 70(2), pages 229-241, July.
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    4. Lee, Ha Youn & Lee, Hyun-Woo & Kim, Doochul, 2000. "Traffic states of a model highway with on-ramp," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 281(1), pages 78-86.
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    Cited by:

    1. Dailisan, Damian N. & Lim, May T., 2020. "Crossover transitions in a bus–car mixed-traffic cellular automata model," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 557(C).
    2. Dailisan, Damian N. & Lim, May T., 2019. "Vehicular traffic modeling with greedy lane-changing and inordinate waiting," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 521(C), pages 715-723.
    3. Binghong Pan & Shasha Luo & Jinfeng Ying & Yang Shao & Shangru Liu & Xiang Li & Jiaqi Lei, 2021. "Evaluation and Analysis of CFI Schemes with Different Length of Displaced Left-Turn Lanes with Entropy Method," Sustainability, MDPI, vol. 13(12), pages 1-27, June.
    4. Dailisan, Damian N. & Lim, May T., 2016. "Agent-based modeling of lane discipline in heterogeneous traffic," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 457(C), pages 138-147.

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