城市道路平面交叉口通行能力、控制效率的研究

针对城市交通拥挤和堵塞现象日趋严重的问题,从交通信号理论的角度,详细分析平面交叉口入口处车辆的排队情况,给出不拥挤交叉口的交通流量方程,确定信号周期和绿信比的取值范围,从而提出交通需求强度和相对需求强度的概念,并将其作为衡量交叉口交通管理效果的质量指标;同时对交通信号的损失时间加以探讨,可为如何提高绿灯信号效率提供理论基础.

Study on Capacity and Effect of Pass Junction on Urban Roads

More and more congestion and jams are serious in urban traffic. According to the traffic signal theory, minutely analyzing vehicles queuing up on stop line, and presetting the traffic flux function of no crowd junction, and defining the value district of signal period and green to signal, so the concept of traffic demand intensity and relative demand intensity is put forward and considered as the standard of traffic management in junctions. At the same time the loss time of traffic signal is also discussed which provides the theoretical basis for improving the effect of green light signal.