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Mobile Transit Trip Planning with Real-Time Data

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Author Info

  • Jariyasunant, Jerald
  • Work, Daniel B.
  • Kerkez, Branko
  • Sengupta, Raja
  • Glaser, Steven
  • Bayen, Alexandre
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    Abstract

    In this article, we describe the development of atransit trip planner(TTP) for mobile devicescalled Transitr, and evaluate its performance. The system predicts the shortest paths betweenany two points in the transit network using real-time information provided by a third party busarrival prediction system, relying on GPS equipped transit vehicles. Users submit their originand destination through a map-based iPhone application, or through a JavaScript enabled webbrowser. A server implementing a dynamic K-shortest paths algorithm with predicted linktravel times returns personalized route directions for the user, displayed on a map. To assessthe optimality and accuracy of the predicted shortest paths, an a posteriori comparison witha schedule-based transit trip planner and the GPS traces of the transit vehicles is performedon six-hundred origin destination pairs in San Francisco. The results show that routing usingthe predicted bus arrivals marginally increases the accuracy of the total travel time and theoptimality of the route. Suggestions to improve the accuracy and optimality using real-timeinformation are proposed.

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    Bibliographic Info

    Paper provided by University of California Transportation Center in its series University of California Transportation Center, Working Papers with number qt51t364vz.

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    Date of creation: 01 Sep 2011
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    Handle: RePEc:cdl:uctcwp:qt51t364vz

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    Related research

    Keywords: Urban Studies/Affairs;

    This paper has been announced in the following NEP Reports:

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    1. Daganzo, Carlos F, 2008. "How to Improve Bus Service," Institute of Transportation Studies, Research Reports, Working Papers, Proceedings qt6m707144, Institute of Transportation Studies, UC Berkeley.
    2. Dessouky, Maged & Hall, Randolph & Zhang, Lei & Singh, Ajay, 2003. "Real-time control of buses for schedule coordination at a terminal," Transportation Research Part A: Policy and Practice, Elsevier, vol. 37(2), pages 145-164, February.
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