中文摘要：

为减少过饱和交叉口的车辆延误时间，建立了改进的F-B配时模型。该模型进行周期计算的步骤与F-B法相同．在调查各进口道交通量时，提出“通过交通量”的概念，并采用延误模型对F-B算法以及改进F-B法进行评价。案例分析结果表明，与F-B配时模型相比，应用改进F-B配时模型的信号配时方案使相邻交叉口延误时间分别减少了34．39％和28．05％。该模型能够有效缓解交通拥堵，减少车辆排队长度并提高交叉口服务水平。

英文摘要：

To reduce the vehicle delay time at oversaturated intersections, the improved F-B signal timing moder was established. The procedures of cycle calculation in this model were the same as those in F-B method. The concept of ＂real traffic volume＂ was put forward when investigating the flow rate of each approach, and the delay model was used to evaluate the F-B method and the improved F-B method. The case study indicated that, compared with the F-B signal timing model, the use of improved F-B model made the delay time of two neighboring intersections of Wenhua Road/ Fushan Road and Wenhua Road/Hagongda Road decrease 34.39% and 28.05% respectively. The improved model can ease traffic jam effectively, and reduce vehicle queue length, and improve the intersection service level.