Route choice, travel time variability, and rational inattention

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This paper sets up a rational inattention model for the route choice problem in a stochastic network where travelers face random travel time. Previous research has assumed that travelers incorporate all provided information without effort. This study assumes that information is costly and that travelers rationally choose how much information to acquire prior to choosing route. We begin with a single traveler and then extend the model to heterogeneous travelers where rationally inattentive user equilibrium (RIUE) is achieved. From the perspective of a single traveler, more information always reduces the impact of travel time variability and increases the probability of choosing a less costly route. However, in RIUE, more information may reduce the social welfare in some scenarios.

Original languageEnglish
JournalTransportation Research Procedia
Pages (from-to)482-502
Publication statusPublished - 2019
Event23rd International Symposium on Transportation and Traffic Theory, ISTTT 2019 - Lausanne, Switzerland
Duration: 24 Jul 201826 Jul 2018


Conference23rd International Symposium on Transportation and Traffic Theory, ISTTT 2019

    Research areas

  • Discrete choice, Imperfect information, Information strategy, Rational inattention, Travel time variability

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