中文摘要：

城市干道连接点是城市道路网的重要节点之一,易形成交通瓶颈。针对国内大部分城市干道接入交通运输效率较低、延误较大、冲突点过多,事故频发等问题。综合考虑国外一般分类,结合我国实际情况提出5种城市干道接入交通的组织模式,并进行分析。基于VISSIM仿真对5种组织模式在不同交通量下的情况进行仿真对比,提出了每种模式在不同情况下的适用性。仿真结果表明,模式1适用于流量较小,左转交通量不大;模式2适用于道路设计条件受限并且次干道左转率较大;模式3适用于单向左转率较高;模式4适用于双向左转率较高;模式5适用于流量较大的情况。

英文摘要：

Abstract City Road junction is always the important node of urban road network, which is easy to become a traffic bottleneckone. Aiming at the low efficiency of arterial street access transportation, large delay, overmuch con- flict points and frequent accidents, according to the general foreign classification and the actual domestic situation in most of the cities, this paper puts forward five organization modes of urban road access traffic and analyzes the traffic flow organization. The applicability of each model in different cases is also put forward based on the stimulation com- parisons to the five different organization modes by VISSIM simulation under different traffic conditions. Simulation results show that the first model is applicative when the flow is small and the flow of left turning vehicles is relatively not large; the second model is available when road design condition is limited and the rate of secondary roads＇ left turning is larger; the third model is applicable to the condition of high rate of one - way left turning; the fourth model is suitable for the traffic condition of high rate of two - way left turning; the fifth mode is suitable for the heavy traf- fic.