关键词: 交通工程, 网络均衡, 多用户交通分配, 算法, 变分不等式问题

Abstract: Mixed traffic flow, consisting of cars, trucks and other like, is one of the major characteristics of China’s road traffic. The complex composition and significant disturbance have received extensive attention from researchers. The paper develops a multi-class network equilibrium model. In which, travel time and road prices are separately given for different classes of users, and there is no interaction among them. The volume delay functions based on the variable PCE of mixed traffic are nonlinear, non-smooth, and asymmetric. The problem is formulated as a nonlinear variational inequality model, and the algorithm-the method of successive averages (MSA), is used to solve the problem. Finally the algorithm is implemented in the EMME/3 transportation planning software, and applied to the actual highway network, and the conversion coefficient of linear and nonlinear the transport assignment results are compared. Studies have shown that traffic assignment with non-linear conversion coefficient is more realistic of the traffic flow distribution.

Key words: traffic engineering, network equilibrium, multi-class traffic assignment, algorithm, variational inequality problem