高速道路交通需求动态特性及O—D矩阵估计

Dynamic Characteristic of Freeway Traffic Demand and Estimating O-D Matrix

从时间变化、车辆到达的随机性以及参数估计误差等三个方面讨论了高速道路交通需求的动态特性，这种动态特性在高速道路交通需求预测时对断面通行能力有折减影响．为了尽可能减小对通行能力的折减影响，就需减小需求Ｏ－Ｄ矩阵的估计误差，由此提出了动态Ｏ－Ｄ矩阵的估计方法．最后通过计算机仿真，比较了估计的结果．

in this paper, the dynamic characteristic of freeway traffic demand,which includes the change of time,vehicle random arrival and parameter estimating error, is discussed. In order to reduce the impact of the dynamic characteristic on mainline capacity, the method of dynamic demand O-D matrix is presented. Finally,the results of this method are compared with those of computer simulation.