信号交叉口延误—通行能力联合优化配时方法研究

Signal-timing of Intersections Based on Integrated Optimization of Delay and Capacity

分析了F-B配时方法延误计算模型的缺陷.证明了上海配时方法的结果是各个相位的饱和度为1.建立了延误-通行能力联合优化配时模型,以延误与通行能力之比最小为优化目标.应用分析表明:F-B配时方法使车均延误比现状减少了1.65s;上海配时方法使车均延误减少了8.15s,但通行能力降低了422pcu/h;联合优化配时法使车均延误减少了9.46s,通行能力保持了现状水平.

This paper analyzes the limitation of delay-model used by F-B signal-planning method, proves that the saturation of phases is 1 adopting Shanghai signal-plartrfing method. This paper sets up a new signal-planning method based on integrated optimization of delay and capacity, and the aim is the minimum of ratio of delay and capacity. And then according to plan signal time： if the F-B signal-planning method is adopted, the average delay of vehicles is decreased by 1.65s compared to actuality. If the Shanghai signal-planning method is used, the average delay is decreased by 8.15s, but the capacity of intersection is decreased by 422pcu/h. If the integrated optimization method is adopted, the average delay is decreased by 9.46s, and the capacity of the intersection is as much as now.