Advanced Travelers Information Systems (ATIS) is one of the major parts of Intelligent Transportation Systems (ITS). As the core and base of the ATIS, Dynamic traffic assignment (DTA) is one of the focuses studied by researchers. Integrated approaches to simultaneously consider both traffic control systems and travels’ behavior should provide the best opportunity for reducing the total network cost. Based on which, this paper does the following main researches: 1) The traffic network optimization assessment and dynamic time-space division In this paper, a new concept of assignmentability is proposed. The concept is used to assess the efficacy of the dynamic traffic assignment on road networks. Combining with the space division methods used in traffic control strategy, the time-space division framework is developed, in which the concept of assignmentability is the main principle. 2) Research on link travel time functions of saturated networks In this paper, based on wave theory, the signal delay queue delay functions experienced by vehicles at intersections are given considering the physical lengths of vehicles. When to calculate the link travel time, the influence of saturated physical queue length is considered. 3) Study on modeling dynamic user-optimal assignment and integrated traffic control systems in saturated urban traffic networks In this paper, a dynamic user-optimal variational inequality assignment model in saturated urban traffic network is proposed. In this model, the flow propagation constraint, First-in-first-out (FIFO) constraint and link capacity constraint and the physical queue are considered. Based on this model, an integrated traffic assignment and control model is developed. This integrated system is expected to play an important role to support traffic management and ARGS in a traffic network. 4) Study on multiple user-classes dynamic traffic assignment In this paper, a discrete time multiclass dynamic user optimal traffic assignment model is proposed. The phenomenon of overtaking existing in traffic networks is considered. The distinction between user-classes is typically based on vehicle travel speed. According to it, vehicles are classified into different types. The multiple user-classes link travel time functions are proposed where asymmetries interactions between the user-classes sharing the same road infrastructure are taken into account. For the same class user, FIFO principle will hold.
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