PUBLIC TRANSPORTATION LINE POSITIONS AND HEADWAYS FOR MINIMUM USER AND SYSTEM COST IN A RADIAL CASE

In this paper, a model of a transit system is built in polar coordinates with radial transit lines in order to find the line positions and headways which minimize user (travel time) and transit agency (operating) costs in response to A general population density function. It is found that the optimum line location is related to the population density and the circumferential access. The optimum headway is found to be that which causes user waiting time cost to equal the operating cost. The simplification of a population density function varying only radially is introduced. A method for determining the optimum number of lines is developed. This number depends upon the ratio of the access cost to the sum of the waiting and operating costs. It is proven that, for optimality, lines should be located in the centers of corridors of uniform width and have equal headways. A fleet size constraint is also introduced for the simplified case. It is proven that for optimality, the fleet is divided equally between lines. (A) /TRRL/

  • Corporate Authors:

    Pergamon Press, Incorporated

    Maxwell House, Fairview Park
    Elmsford, NY  United States  10523
  • Authors:
    • Byrne, B F
  • Publication Date: 1975-7

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 97-1023
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00127901
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Dec 29 1981 12:00AM