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Related Experiment Video

Updated: May 4, 2026

Evaluation of an Exclusive Spur Dike U-Turn Design with Radar-Collected Data and Simulation
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Robustness evaluation of bus-subway composite network considering accessibility.

Yi Cao1, Xiangzun Bu2, Jialong Zhang1

  • 1School of Transportation Engineering, Dalian Jiaotong University, Dalian, 116028, China.

Scientific Reports
|March 29, 2025
PubMed
Summary

This study reveals that sites with high off-site accessibility are crucial for bus-subway composite network robustness. Optimizing these critical locations enhances public transport performance and resilience.

Keywords:
AccessibilityComplex networkKey site identificationRobustnessUrban public transportation

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Area of Science:

  • Urban Planning
  • Transportation Engineering
  • Network Science

Background:

  • Existing research on public transport network robustness often neglects spatial information and site accessibility.
  • Evaluating bus-subway composite networks requires a comprehensive approach beyond structural analysis.

Purpose of the Study:

  • To assess the robustness of bus-subway composite networks considering spatial factors and site accessibility.
  • To develop and apply a composite network model for evaluating network resilience under various failure scenarios.

Main Methods:

  • Utilized ArcGIS and network mapping services to create an enhanced composite network model.
  • Proposed three site importance indices: direct reachability, inter-site reachability, and off-site accessibility.
  • Simulated deliberate and random attacks to analyze network robustness indicators (connectivity, efficiency, reachability) using the CRITIC weighting method.

Main Results:

  • Sites with high off-site accessibility demonstrated the most significant impact on overall network performance.
  • Network reachability was identified as a key indicator of public transportation system accessibility.
  • Network efficiency was found to be most influenced by critical sites within the network.

Conclusions:

  • Off-site accessibility is a critical factor for bus-subway composite network robustness.
  • The developed methodology provides valuable insights for optimizing public transportation networks.
  • Findings support enhanced emergency management strategies for urban transit systems.