journal article·2025-04-15Open access

Coordinated Optimization of Feeder Flex-Route Transit Scheduling for Urban Rail Systems

Yabin Wang, Qiangqiang Li, Zhenfeng Han, Jin Zhang

Applied Sciences· Volume 15· Issue 8

Abstract

Given the distinct operational features of flex-route transit (FRT) compared to conventional fixed-route systems, this study integrates FRT with urban rail transit and proposes a collaborative optimization approach for feeder flex-route operations and scheduling. The model incorporates path planning, timetable design, and vehicle scheduling to minimize travel costs, enhance operational efficiency, and improve service quality. A mixed-integer nonlinear programming method is applied to optimize scheduling while aligning with rail timetables and passenger transfer behavior. Simulation experiments based on realistic urban transit scenarios are conducted to validate the model, optimizing key operational parameters such as departure intervals, vehicle deployment, and stop selection. The results demonstrate that the proposed approach effectively adjusts schedules and vehicle assignments to accommodate fluctuating passenger demand. This study offers both a theoretical foundation and a practical framework for integrated scheduling of feeder flex-route services, with potential applications for improving coordination and performance in multimodal public transit systems.
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Research context

OpenAlex topics: Transportation Planning and Optimization · Railway Systems and Energy Efficiency · Transportation and Mobility Innovations

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Hefei Urban Planning and Design Institute, Hefei 230041, China

Anhui Provincial Key Laboratory of Urban Rail Transit Safety and Emergency Management, Hefei University, Hefei 230601, China

School of Urban Construction and Transportation, Hefei University, Hefei 230601, China

School of Transportation, Southeast University, No. 2 Southeast University Road, Nanjing 211189, China

Funding

Open Project of Anhui Provincial Key Laboratory of Urban Rail Transit Safety and Emergency Management, Hefei University · Anhui Provincial Housing and Urban–Rural Development Science and Technology Program Project · Hefei University Talent Research Fund Project

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