中文摘要：

根据信号交叉口理论，在以往信号延误研究的基础上，考虑到公交车辆平均载客数远大于社会车辆平均载客数，以交叉口人总延误最小为系统优化目标，分析并推导了公交优先信号控制优化模型。运用该优化方法能够明显降低交叉口的人均延误，有效保证公交车的准时性，是减少公交车延误的一种可行、有效的方式，为进一步研究交通信号自适应控制方法和建立交通信号控制参数优化的性能指标函数提供了信息。

英文摘要：

Adopted signalized intersection theory, based on the research foundation of vehicle delay of the signal control, proposed by taking into account the average number of the passengers in the bus is much larger than in the ordinary vehicles, anthors have analyzed and inferred an optimization method of the signal control for bus priority, in which the average people delay is regarded as an optimal aim of system. The optimization method is a feasible and efficient approach to reduce bus delays, because it can reduce average passenger delay significantly, and it provides useful information for further studying adaptive signal control method and establishing performance index function of signal control parameters optimization.