Multi-Agent Approach for Public Transit System Based on Flexible Routes

The use of transfers in public transit has the advantages of reducing operations costs and introducing a more flexible and efficient route planning. In contrast, the main drawback, from the passengers’ point of view, is the inconvenience of traveling multi-legged trips. In order to diminish the waiting time caused by transfers, synchronized timetables were introduced. The use of synchronized (timed) transfers suffers from uncertainty about the simultaneous arrival of two (or more) vehicles at an existing stop. This can lead to deterioration in system reliability. In order to alleviate the uncertainty of simultaneous arrivals, a new passenger-transfer concept was developed extending the commonly used single-point encounter (at a single transit stop) to a road-segment encounter (any point along the road segment constitutes a possible encounter point). This work describes the new concept based on a multi-agent system. This system incorporates new models: (1) simulation-based models developed that describe the encounter probability of public-transit vehicles along a road segment under dependent travel time conditions; (2) finding the encounter probability's upper bound; (3) an optimization model based on dynamic programming. Such a change in concept will reduce the uncertainty of meeting at a point and will enable more flexibility in deploying operational tactics (hold, skip stop, short-turn, etc).

Language

  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; References; Tables;
  • Pagination: 25p
  • Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

Filing Info

  • Accession Number: 01049262
  • Record Type: Publication
  • Report/Paper Numbers: 07-0618
  • Files: TRIS, TRB
  • Created Date: Feb 8 2007 5:12PM