A stochastic user equilibrium model solving overlapping path and perfectly rational issues
Dong-mei Yan , Jian-hua Guo
Journal of Central South University ›› 2021, Vol. 28 ›› Issue (5) : 1584 -1600.
A stochastic user equilibrium model solving overlapping path and perfectly rational issues
Traffic assignment has been recognized as one of the key technologies in supporting transportation planning and operations. To better address the perfectly rational issue of the expected utility theory (EUT) and the overlapping path issue of the multinomial logit (MNL) model that are involved in the traffic assignment process, this paper proposes a cumulative prospect value (CPV)-based generalized nested logit (GNL) stochastic user equilibrium (SUE) model. The proposed model uses CPV to replace the utility value as the path performance within the GNL model framework. An equivalent mathematical model is provided for the proposed CPV-based GNL SUE model, which is solved by the method of successive averages (MSA). The existence and equivalence of the solution are also proved for the equivalent model. To demonstrate the performance of the proposed CPV-based GNL SUE model, three road networks are selected in the empirical test. The results show that the proposed model can jointly deal with the perfectly rational issue and the overlapping path issue, and additionally, the proposed model is shown to be applicable for large road networks.
stochastic user equilibrium / cumulative prospect theory / generalized nested logit / method of successive averages
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