We study a dynamic-journey planning problem for multimodal transportation networks. The goal is to find a journey, possibly involving transfers between different transport modes, from a given origin to a given destination within a specified time horizon. Transport services are represented as sequences of scheduled legs between nodes in the transportation network. Due to uncertainty in transport services, we assume for each pair of adjacent legs $i$ and $j$ a probability of a successful transfer from $i$ to $j$. If a transfer between two legs is unsuccessful, the customer needs to reconsider the remaining path to the destination. The problem is modeled as a Markov decision process, and the main contribution is a backward induction algorithm that generates an optimal policy for traversing the public transport network in terms of a given objective, e.g., reliability, ride time, waiting time, walking time, or the number of transfers. A straightforward method for maximizing reliability is also suggested, and the algorithms are tested on real-life Helsinki area public transport data. Computational examples show that, with a given input, the proposed algorithms rapidly solve the journeying problem.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Dynamic Journeying in Scheduled Networks


    Contributors:
    Hame, Lauri (author) / Hakula, Harri (author)


    Publication date :

    2013-03-01


    Size :

    276688 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Dynamic Journeying in Scheduled Networks

    Häme, L | Online Contents | 2013


    Space: Journeying Toward the Future (AAS 07-431) (Abstract Only)

    Launius, R.D. / American Astronautical Society / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2008



    Tailored Dynamic Gain-Scheduled Control

    C. D. C. Jones / M. H. Lowenberg / T. Richardson | AIAA | 2006


    Tailored Dynamic Gain-Scheduled Control

    Jones, C.D.C. | Online Contents | 2006