Commuting Equilibria on a Mass Transit System with Capacity Constraints

This paper investigates the morning peak-period commuting problem in a monocentric city on a transit system with capacity constraints. Commuters are assumed to choose their optimal time-of-use decision from various stops/home-locations to a single destination (workplace) by trading off the travel time and in-vehicle crowding cost against the schedule delay cost. Two types of capacities, namely physical capacity (the maximum number of passenger that a transit vehicle can safely load) and seat capacity (the number of seats designed in a transit vehicle) are taken into account. Mathematical programming models are proposed to characterize the equilibrium properties of commuting, in which no commuter can reduce total commuting costs by unilaterally changing departure time or transit service. The paper compares the commuters’ travel costs and behaviors caused by difference physical and seat capacity constraints. It is found that increasing physical capacity can benefit all commuters from different stops along the transit line and weaken the boarding priority of upstream commuters. However, providing more seats in the vehicle would strengthen the boarding priority of upstream commuters and may increase the commuting cost of downstream commuters. The work presented in this paper can be extended in several aspects. For example, the demand elasticity, variable transit service frequency and fare pricing can be incorporated into the equilibrium analyses. It is of interest to study the commuting equilibrium in a corridor network when transit vehicles and private cars share the road commonly.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 361-383
  • Monograph Title: Transportation and Traffic Theory 2007

Subject/Index Terms

Filing Info

  • Accession Number: 01076736
  • Record Type: Publication
  • ISBN: 9780080453750
  • Files: TRIS
  • Created Date: Sep 6 2007 10:40AM