Optimal all-stop, short-turn, and express transit services under heterogeneous demand

Y. Yavuz Ulusoy, Steven Chien, Chien Hung Wei

Research output: Contribution to journalArticlepeer-review

95 Scopus citations


As a major mode choice of commuters, public transit plays an important role in relieving congestion on urban transportation networks. A model is developed for cost-efficient operation that optimizes all-stop, short-turn, and express transit services and the associated frequencies by considering heterogeneous demand. For a transit line with given stations and origin-destination demand, the objective total cost function is optimized by considering a set of constraints that ensure frequency conservation and sufficient capacity subject to operable fleet size. A numerical example is designed that is based on a real-world rail transit line to demonstrate the applicability and effectiveness of the developed model. Results show that optimized integrated service patterns and associated service frequencies significantly reduce total cost.

Original languageEnglish (US)
Pages (from-to)8-18
Number of pages11
JournalTransportation Research Record
Issue number2197
StatePublished - Dec 1 2010

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Mechanical Engineering


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