信号控制交叉口延误参数提取研究

Study of delay parameter extracting for signalized control intersection

延误参数的精确提取对于交叉口的信号配时设计和评价具有重要的研究意义。文章对传统的延误参数提取模型的精度进行了验证,结果表明,以1个周期为分析时长,95%置信度下传统模型得到的参数精度不超过75%。借助于应用日益广泛的视频检测技术,文中给出了2种视频环境下延误参数提取的方法,以1个周期为统计时长,得到新方法提取的参数精度均在85%以上,说明新的方法比传统的模型能够更精确地提取交叉口的延误参数。

The precise extracting of the delay parameters is of great importance to the signal timing design and validation of the intersection.The precision of traditional delay extracting models is validated in this paper,which is no more than 75% under 95% reliability degree by using one cycle as the analytical period.Based on the video detection technology,a new delay parameter extracting method is described under two video circumstances,and its precision is more than 85% by using one cycle as the analytical period,which proves that the new method has better precision than the traditional ones.