Effect of ATIS Information under Incident-based Congestion Propagation

Network-wide propagation of the non-recurrent congestion is one important factor which greatly affects the spatiotemporal distribution of traffic flow and the travel time of upstream links will largely increase due to spillback from downstream. The advanced traveler information systems (ATIS) is able to alleviate the of congestion propagation via providing information about traffic condition and suggesting the trip makers to alter their a priori routes. The modeling of congestion propagation needs to be taken into account of to evaluate the effect of ATIS information on trip makers. By the means of Cell Transmission Model (CTM), this paper proposes a simulation-based network-wide congestion propagation model and then combines it with routes choice behavior model of trip makers under ATIS information to analysis the performance of traffic network. Three groups of trip makers behaviors under incident and information based on the Stochastic Dynamic User Optimal (SDUO) principle are assumed in this paper. The results show that the effect of ATIS information is related to the severity of incident and the quality level of information both.