TRANSIT NETWORKS: SIMULATION VS OPTIMIZATION APPROACHES --TRANSPORTATION PLANNING METHODS. PROCEEDINGS OF SEMINAR M HELD AT THE PTRC SUMMER ANNUAL MEETING, SUSSEX UNIVERSITY, ENGLAND, JULY 14-17, 1986. VOLUME P282

When a central authority operates the transit system of a city, an important problem is to decide the level of service that should be provided in order to maximise social welfare. Level of service will crucially depend on the frequencies of services offered on each route of the network. The determination of these optimum frequencies constitutes what is usually called the transit design problem. Nevertheless, when the transit service is provided by a group of private operators in a deregulated environment, each of them will independently decide how to allocate their vehicles to operate on transit routes in such a way that some private objective be optimized. The addition of individual operators' decisions will result in a given level of service on the different routes of the transit network. The set of frequencies that will result from such a free market process will in general differ from those that maximise social welfare, given the externalities that exist in the system operation. The transit design problem has been studied by several authors during the last years and different mathematical formulations and solution methods have been proposed and analysed. Nevertheless, the simulation problem has not received much attention so far no matter that it is of obvious practical importance for those systems where deregulation policies are applied to the transit market. In this work, we analyse the formulation and characteristics of the transit design problem and propose a new mathematical formulation for the transit simulation problem. Then we study the main similarities and differences of both formulations.(a) for the covering abstract of the seminar see IRRD 812674.

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• Corporate Authors:

  PTRC Education and Research Services Limited

  110 Strand
  London WC2,   England 
• Authors:
  • Fernandez, J E
• Publication Date: 1986

Language

• English

Media Info

• Pagination: p. 47-60
• Serial:
  • Publication of: PTRC EDUCATION AND RESEARCH SERVICES, LTD
  • Publisher: PTRC Education and Research Services Limited
  • ISSN: 0266-4593

Subject/Index Terms

• TRT Terms: Administration; Automobiles; Conferences; Deregulation; Itinerary; Level of service; Mathematical models; Operating costs; Optimization; Organizations; Origin and destination; Planning; Public transit; Simulation; Sociology; Urban areas
• Uncontrolled Terms: Optimum
• Subject Areas: Administration and Management; Planning and Forecasting; Public Transportation;

Filing Info

• Accession Number: 00481483
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 086050-168-X
• Files: ITRD, TRIS
• Created Date: Apr 30 1989 12:00AM