摘要
研究城市立交匝道连接点临界间隙,建立了右转机动车穿越直行自行车的临界间隙模型.在分析驾驶员对直行自行车反应的基础上,以匝道连接点的几何特性和右转机动车的运行为研究内容,利用机动车穿越时间法,得到临界间隙的估算模型.通过北京市西直门和蓟门桥的模型计算值与实测估计值比较,相对误差分别为5.1%和9.6%,说明本模型具有很好的准确性和实用性.
In order to study the critical gap in urban interchange＇s ramp terminal, a model to calculate the critical gap of right-turning vehicles crossing straight-running bicycles was established. On the basis of analyzing the driver＇s response to the straight-running bicycle, the paper analyzed the geometric properties of the ramp terminals and the vehicles＇ running, and a method based on the crossing time was obtained. By comparing the values of the model calculated values and the estimate values by the measured data in Xi-Zhimen and Ji-Menqiao interchange, the relative error was 5.1 percent and 9.6 percent. It indicates that this model has a higher accuracy and practicality.
出处
《数学的实践与认识》
CSCD
北大核心
2010年第8期105-111,共7页
Mathematics in Practice and Theory
关键词
交通流
机非冲突
临界间隙
穿越时间
traffic flow
conflict of vehicle and bicycle
critical gap
crossing time
