小型平立复合式交叉口交通设计及适用性

Study on the Design and Applicability of Small Flat-standing Composite Intersection

为缓解城市交通拥堵、减少交叉冲突点个数和提高交叉口运行效率,基于交叉口不同左转比例提出了两种小型平立复合式交叉口的设计方案,通过分析不同设计方案中车辆左转、直行、右转的不同比例对交叉口通行能力进行估算,选择平均排队长度和平均行程时间作为评价指标,构建路网仿真模型。通过对比分析进口道交通量,验证两种设计方案的适用性。仿真结果表明:所提出的设计方案能够显著减少交叉口平均排队长度和缩短平均行程时间,用以分析不同设计方案在不同交通量下的适用性,可为交叉口优化设计提供参考。

To alleviate urban traffic congestion,reduce the number of crossing the conflict and improving the efficiency of the intersection,turn left different ratio is put forward based on the intersection of two small flat vertical compound intersection design scheme,by analyzing the different design scheme of vehicle turn left,go straight and turn right in different proportion to estimate of intersection traffic capacity,choose the average queue length and average travel time as evaluation index,construct the network simulation model.The applicability of the two design schemes is verified by comparing and analyzing the traffic volume of the inlet road.The simulation results show that the proposed design scheme can significantly reduce the average queue length and the average travel time of the intersection,which can be used to analyze the applicability of different design schemes under different traffic volume,and can provide a reference for the optimal design of the intersection.