Analysis on Dynamic System Optimal Assignment Accounting for Traffic Congestion and Road Deterioration Based on Multi-objective Optimization

Abstract

In this paper, we present a novel dynamic system optimal (DSO) problem in which total travel time over a road network and road deterioration caused by vehicles’ live load are both accounted for. We first formulate a model that optimizes the aforementioned two objectives by (1) evaluating the degree of deterioration by means of marginal maintenance cost of each link and (2) only using the traffic volume of large vehicles, which have dominant effect on road deterioration, to estimate the increase of the maintenance cost. Then, we compare our proposed problem with the conventional DSO problem to analyze how the consideration of road deterioration can affect the optimal traffic flow.