城市道路信号平面交叉口合理间距研究

Study on Reasonable Distance Between Signal Plane Intersections of Urban Roads

平面交叉作为城市道路的关键节点,其合理净距的取值直接影响到整条路段车辆的行车安全和通行效率。文章统计分析了平面交叉口由于间距过短所引发交通事故的原因,基于交通流理论、车辆加减速方式、统计学和概率论原理、驾驶员操作习惯等建立了平面交叉口合理间距的计算模型,得到不同设计速度、车道数情况下平面交叉口合理间距的取值。

As a key node of urban roads,the reasonable net distance between level-crossing directly affects vehicles'driving safety and traffic efficiency on the entire road section.The reason of traffic accidents caused by short spacing at level-crossing were analysed in this paper.A calculation model for reasonable spacing at levelcrossing is established based on traffic flow theory,vehicle acceleration and deceleration methods,statistics and probability theory principles,and driver operating habits.The values of reasonable spacing at level-crossing under different design speeds and number of lanes are obtained.