A PLANNING MODEL FOR PHASING IN A NEW FLEET OF LIGHT RAIL VEHICLES

This paper describes a computerized planning model developed to assist the operations planning groups of urban transportation systems. The model is to be utilized in planning the phasing in a fleet of new light rail vehicles (lrvs). The model consists of a system of interrelated, calibrated mathematical functions following iterative procedures to meet specified tolerances. Applications of the model are given within the context of the Massachusetts Bay Transportation Authority. The experimental investigations include: the impact of the lrvs on ridership demand, operating costs, revenues and on operating performance measures. Additionally, assignment rules for allocating arriving lrvs are evaluated. The experimental results show that the "best" assignment rule changes as a function of the number of lrvs available. In addition, the results show that following the introduction of the lrvs, "economies of scale" can be expected. The model is written in FORTRAN and consists of ten modules, the main routine and nine sub-routines.

  • Availability:
  • Corporate Authors:

    Pergamon Press, Incorporated

    Headington Hill Hall
    Oxford OX30BW,    
  • Authors:
    • Maggard, M J
    • Marcotte, A A
    • Chang, Y S
    • Glickman, T S
  • Publication Date: 1979-4

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Filing Info

  • Accession Number: 00302384
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Feb 11 1981 12:00AM