A Two-Phase Gradient Projection Algorithm for Solving the Combined Modal Split and Traffic Assignment Problem with Nested Logit Function

Figure 2

Illustration of the mode choice equilibration under the nested logit modal split function; (a) network, demand, and cost functions; (b) upper level equilibrium (marginal prob.); (c) lower level equilibrium (conditional prob.); (d) travel time change by flows; (e) equilibrium solution; (f) probabilities verification; (g) cost verification.

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