信号配时是影响信号交叉口通行能力和延误的关键。文章根据交叉口信号配时的有关理论,在充分考虑中国城市道路交叉口混合交通流运行特性的基础上,采用VisualBasic程序设计语言开发了适合中国交通实际状况的信号交叉口配时软件系统。经过仿真分析及实际验证,利用本系统对信号交叉口进行配时设计,具有计算精度高、计算速度快的优点,并且明显改善了信号交叉口的交通运行状况。 Signal timing is the key to influencing traffic capacity and delays at signalized intersections. Based on the theory of signal timing at intersections, this paper develops a signal timing software system suitable for the actual situation of China’s traffic based on the Visual Basic programming language, taking fully into account the mixed traffic flow characteristics of urban road intersections in China. After the simulation analysis and the actual verification, this system is used to design the signalized intersections. It has the advantages of high computational accuracy and computational speed, and significantly improves the traffic conditions at the signalized intersections.