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Hub-Periphery Hierarchy in Bus Transportation Networks: Gini Coefficients and the Seoul Bus System

Author

Listed:
  • Chansoo Kim

    (AI Lab., Computational Science Center & ESRI, Korea Institute of Science and Technology, Seoul 02792, Korea
    Equal contributions.)

  • Segun Goh

    (Institut für Theoretische Physik II, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
    Equal contributions.)

  • Myeong Seon Choi

    (Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea)

  • Keumsook Lee

    (Department of Geography, Sungshin Women’s University, Seoul 02844, Korea)

  • M. Y. Choi

    (Department of Physics and Astronomy and Center for Theoretical Physics, Seoul National University, Seoul 08826, Korea)

Abstract

Bus transportation networks are characteristically different from other mass transportation systems such as airline or subway networks, and thus the usual approach may not work properly. In this paper, to analyze the bus transportation network, we employ the Gini coefficient, which measures the disparity of weights of bus stops. Applied to the Seoul bus system specifically, the Gini coefficient allows us to classify nodes in the bus network into two distinct types: hub and peripheral nodes. We elucidate the structural properties of the two types in the years 2011 and 2013, and probe the evolution of each type over the two years. It is revealed that the hub type evolves according to the controlled growth process while the peripheral one, displaying a number of new constructions as well as sudden closings of bus stops, is not described by growth dynamics. The Gini coefficient thus provides a key mathematical criterion of decomposing the transportation network into a growing one and the other. It would also help policymakers to deal with the complexity of urban mobility and make more sustainable city planning.

Suggested Citation

  • Chansoo Kim & Segun Goh & Myeong Seon Choi & Keumsook Lee & M. Y. Choi, 2020. "Hub-Periphery Hierarchy in Bus Transportation Networks: Gini Coefficients and the Seoul Bus System," Sustainability, MDPI, vol. 12(18), pages 1-14, September.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:18:p:7297-:d:409541
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    References listed on IDEAS

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    Cited by:

    1. Jiawei Gui & Qunqi Wu, 2020. "Multiple Utility Analyses for Sustainable Public Transport Planning and Management: Evidence from GPS-Equipped Taxi Data in Haikou," Sustainability, MDPI, vol. 12(19), pages 1-46, September.

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