The cost of travel time variability: three measures with properties

Leonid Engelson, Mogens Fosgerau

    Research output: Contribution to journalJournal articleResearchpeer-review

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    Abstract

    This paper explores the relationships between three types of measures of the cost of travel time variability: measures based on scheduling preferences and implicit departure time choice, Bernoulli type measures based on a univariate function of travel time, and mean-dispersion measures. We characterise measures that are both scheduling measures and mean-dispersion measures and measures that are both Bernoulli and mean-dispersion. There are no measures that are both scheduling and Bernoulli. We consider the impact of requiring that measures are additive or homogeneous, proving also a new strong result on the utility rates in an additive scheduling measure. These insights are useful for selecting cost measures to use in applications.
    Original languageEnglish
    JournalTransportation Research. Part B: Methodological
    Volume91
    Pages (from-to)555-564
    ISSN0191-2615
    Publication statusPublished - 2016

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