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.

针对旅客面临随机旅行时间的随机网络中的路径选择问题，本文建立了一个合理的注意力不集中模型。先前的研究假设旅行者会毫不费力地合并所有提供的信息。这项研究假设信息昂贵，旅行者会在选择路线之前合理选择要获取的信息量。我们从单个旅行者开始，然后将模型扩展到实现合理的注意力不集中的用户平衡（RIUE）的异构旅行者。从单个旅行者的角度来看，更多信息总是会减少旅行时间可变性的影响，并增加选择成本更低的路线的可能性。但是，在RIUE中，更多信息可能会降低某些情况下的社会福利。