Cost-saving properties of schedule coordination in a simple trunk-and-feeder transit system

Karthikgeyan Sivakumaran, Yuwei Li, Michael J. Cassidy, Samer Madanat

Research output: Contribution to journalArticlepeer-review


The paper explores how the coordination of vehicle schedules in a public transit system affects generalized costs. We consider an idealized system that delivers its users to a common destination by requiring each to transfer from a feeder- to a trunk-line vehicle. Continuum models are used first to analyze cases in which the trunk-line vehicle schedule is given exogenously. We find that when feeder vehicles are dispatched in coordination with this exogenous trunk-line schedule, the reduction in user cost often outweighs the added cost to the feeder operation. In cases when the frequencies of trunk and feeder services can be established jointly, the models show that coordination can be Pareto improving, meaning that operator and user costs both diminish. Conditions that give rise to these cost savings are specified. Practical implications are discussed.

Original languageEnglish (US)
Pages (from-to)131-139
Number of pages9
JournalTransportation Research Part A: Policy and Practice
Issue number1
StatePublished - Jan 2012


  • Feeder transit
  • Transit schedule coordination

ASJC Scopus subject areas

  • Aerospace Engineering
  • Business, Management and Accounting (miscellaneous)
  • Transportation
  • Civil and Structural Engineering
  • Management Science and Operations Research


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