基于智能检测的单点控制交叉口出口交通流溢出三级预警

The Three Level Warning of Queue Overflow of Single Point Control Intersection Based on Intelligent Detection

摘要: 本文针对城市普遍存在的单点信号控制交叉口在交通流量高峰时期易发生的因出口交通流排队溢出导致的交通拥堵问题，提出了一种在出口引道设置检测区域的方案，通过参数判断将交通流溢出状况分成排队溢出预警、排队溢出拥堵报警和路口拥堵事件报警三种情况。本文提出的检测方案克服了现有技术中受开口处进出车辆影响导致的数据精度低的缺点，将溢出事件进行情况分类进而分别处置更加符合实际交通运行的复杂性。

Abstract: In this paper, in view of the traffic congestion caused by the traffic flow queuing overflow, which is easy to occur at the peak period of traffic flow, this paper proposes a scheme to set up the detection area in the exit channel. The traffic flow queuing overflow is divided into three cases through the parameter judgment, which is obtained in real-time traffic flow. The three cases include queuing overflow warning and queuing overflow congestion alarm and congestion event alarm. The detection scheme proposed in this paper overcomes the disadvantages of low data accuracy in the existing technology, which is caused by the impact of the vehicles in and out of the road opening. Classifying the queuing overflow events is more consistent with the complexity of the actual traffic operation.