Dynamic User-Optimal Route Choice Model

The dynamic user-optimal route choice problem explores how travelers make their route choice decision based on predicative traffic information. The fixed time-dependent O-D demand is assumed to be known and may be regarded as a natural result of day-to-day adjustments of commuters. In this chapter, the discrete-time dynamic user-optimal (DUO) route choice problem is formulated using the variational inequality approach. The dynamic user-optimal conditions and its equivalent problem, along with the concept of time-space network, are presented in Section 4.1. A numerical example is given in Section 4.2. The relationship between dynamic and static user-optimal route choice models is depicted in Section 4.3. The occurrence of multiple solutions is justified by a numerical example in Section 4.4, and finally, concluding notes are given in Section 4.5.