摘要
为尽可能减少公交优先对社会车流干扰,提出一种不依赖公交检测信息,只考虑社会车流流量实现公交优先的信号配时方法。这种信号配时方法采用搭接公交相位,可充分利用社会车流的相位绿灯时间,既满足社会车流通行,还能使公交车获得更多绿灯时间。论文从绿灯时间组成和共用相位角度分析搭接相位的可行性,研究有利于公交优先的相位相序方法,并建立了信号配时参数模型,最终通过模拟验证说明该信号配时方法不仅能减少公交车延误,还可提高绿灯利用率、保障交叉口服务水平。
Previous experience has shown that transit responsive signal control has the ability to reduce delay of buses in urban areas when compared to traditional fixed-time control. However, most of these experiences have focused primarily on the impact on buses or delay per person. This paper described the development and evaluation of improved signal timing with overlapped phase for Transit Passive Priority that explicitly considers the impacts of private automobiles. This signal control method is unique in two ways. First, the method explicitly considers the interference caused to the general traffic by transit vehicles waiting for the right of priority. Second, when this method overlaps transit phase to automobiles phase at a certain point, the green time and interval time of transit that such potential treatment might have on automobiles are explicitly quantified. This paper comprehensively analyzed the feasibility of inserting overlapped phase to green phase from the green time structure and different flows interweaving in one phase. To avoid the conflict between transit and vehicle, the signal control parameters for overlapped phase were designed for transit priority including green of overlapped phase, interval time and minimum green of transit phase and so on. Evaluation of its performance with VISSIM and the calculation of the priority control parameters have been conducted and will appear in the literature in the near future.
出处
《交通信息与安全》
2009年第3期48-52,共5页
Journal of Transport Information and Safety
基金
国家"973"计划项目(批准号:2006CB705505)
国家高科技研发计划项目(批准号:2007AA11Z209)资助
关键词
交通控制
公交优先
未饱和绿灯时间
搭接相位
traffic control
transit signal priority
unsaturated green time
overlapped phase