A METHODOLOGY FOR FEEDER-BUS NETWORK DESIGN

The U.S. transit industry faces financial difficulties. Among the strategies suggested for improving transit financial conditions, the development of better-integrated intermodal systems has the advantage of potentially achieving both cost reduction and improved service. A network optimization methodology for the design of an integrated feeder-bus--rail rapid transit system is presented. The Feeder-Bus Network Design Problem (FBNDP) is defined as that of designing a set of feeder-bus routes and determining the frequency on each route so as to minimize operator and user costs. The FBNDP is first considered under many-to-one demand and its formulation is discussed as a mathematical programming problem. Then the generalization of the formulation to the many-to-many demand pattern is reviewed. The FBNDP is a larger and complex routing-type problem that can be solved only heuristically. A heuristic method that generalizes the savings approach to consider operating frequency is presented. The analysis presented illustrates the capabilities of the proposed model as a strategic planning tool for feeder-bus network design. It indicates that changes that increase the relative weight of operator cost often result in feeder-bus networks with less circuitous routes operated at lower frequencies, whereas changes that increase the relative weight of user cost result in feeder routes operated at higher frequencies. The solutions provided by the proposed model have been tested and found superior to manually designed networks, particularly under variable demand.

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 40-51
  • Monograph Title: TRANSPORTATION LOGISTICS
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00468594
  • Record Type: Publication
  • ISBN: 0-309-04473-1
  • Files: TRIS, TRB, ATRI
  • Created Date: May 31 1988 12:00AM