Volume 26 Issue 2
Feb.  2026
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CHEN En-hui, JI Ke-yu, CHENG Long, ZHANG Wen-bo, TENG Jing. Method for identifying low-accessibility areas and their contributing factors in public transit accessibility to integrated passenger transportation hubs[J]. Journal of Traffic and Transportation Engineering, 2026, 26(2): 44-60. doi: 10.19818/j.cnki.1671-1637.2026.142
Citation: CHEN En-hui, JI Ke-yu, CHENG Long, ZHANG Wen-bo, TENG Jing. Method for identifying low-accessibility areas and their contributing factors in public transit accessibility to integrated passenger transportation hubs[J]. Journal of Traffic and Transportation Engineering, 2026, 26(2): 44-60. doi: 10.19818/j.cnki.1671-1637.2026.142

Method for identifying low-accessibility areas and their contributing factors in public transit accessibility to integrated passenger transportation hubs

doi: 10.19818/j.cnki.1671-1637.2026.142
Funds:

National Natural Science Foundation of China 52402388

National Natural Science Foundation of China 52432011

Science and Technology Innovation Plan of Shanghai Science and Technology Commission 24692105600

Fundamental Research Funds for the Central Universities 22120250285

More Information
  • Corresponding author: TENG Jing, professor, PhD, E-mail: tengjing@tongji.edu.cn
  • Received Date: 2025-04-28
  • Accepted Date: 2025-11-27
  • Rev Recd Date: 2025-09-20
  • Publish Date: 2026-02-28
  • Regarding the challenge of identifying low-accessibility areas and their contributing factors in public transit accessibility to large-scale integrated passenger transportation hubs, a diagnostic framework was proposed for hub transit services based on accessibility. The spatial coverage and population served by multimodal networks were measured across different accessibility time thresholds. The Lorenz curve model was applied to assess the equity of spatial and population coverage across different hubs. A method was established to identify low-accessibility areas in hub public transit services, examining their spatial extent and distribution patterns. A gradient boosting decision tree model was introduced to analyze how various travel chain components affect hub accessibility from a behavioral perspective. An affinity propagation clustering algorithm targeting low-accessibility areas was designed to categorize distinct types of poorly connected zones. A case study was conducted using multimodal transportation networks at Hongqiao and Pudong hubs in Shanghai. Research results show that although Hongqiao hub generally has better public transit accessibility than Pudong hub, it performs worse in terms of equity, with more pronounced spatial disparities. Low-accessibility areas to Hongqiao exhibit a multi-core, dispersed pattern, while those to Pudong show a linear, clustered distribution. Regarding the contributing factors to low accessibility, walking distance has the greatest relative impact on Hongqiao hub (31%), followed by the road network detour index (29%) and the number of surface bus stops (21%). For Pudong hub, walking distance's influence increases to 37%, followed by the number of bus stops (26%) and the public transit network detour index (18%). Based on these key factors, the low-accessibility areas to both hubs were categorized into three types: first-and-last-mile walking-constrained, bus-dependent, and long-distance detouring rail transit.

     

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