近距离交叉口空间优化设计研究

通过分析近距离交叉口的几何特征，得出此类交叉口的交通流特性．在此基础上．探讨了近距离交叉口空间优化设计的一般方法和步骤。结合工程实际对具体新建近距离交叉口进行了空间优化方案的设计，并根据交通措施设计了相应的信号控制方案．运用微观交通仿真软件进行了方案评价和比选。

Research on Optimized Spatial Design at Two near Crossings

Combined with the geometric features of the near intersections, traffic flow characteristic is summarized. Furthermore, the general method for optimized spatial design at near intersections is presented. Employing the method which is suggested in the paper, the optimized channelization scheme for two near intersections of a new urban road is brought forward and signal control scheme is presented to satisfy the corresponding measures for traffic. From the viewpoint of program evalua- tion, the plans are simulated by microscopic traffic simulation software of PTV, and consequently, the optimal plan is put forward.