The paper introduced a method of study adjacent to the intersection of the distance between the road congestion relations. First, in-depth study of traffic theory, to establish the discretization traffic flow mathematical model. Then used the local traffic flow simulation vehicle online at the regional road running. Different adjacent intersection between the distance under the condition of the traffic flow simulation calculation results were queue length increases as the grid frequency increases. The queue length was increased but at a different frequency region different rates, queue length had a minimum rate of increase in the frequency was in a certain region. At the same time, queue length, the distance between adjacent intersections conditions nor linearly with the increase in the distance between adjacent intersections the queuing vehicles road share in a particular region also had a minimum value, for traffic management and planning kinds of ideas and methods.% 介绍了研究相邻交叉口间距离与道路拥堵关系的方法。首先对交通流理论进行深入的研究，建立离散化交通流数学模型。然后用局部交通流方法模拟车辆在区域路网上运行过程。不同相邻交叉口间距离条件下的交通流模型，在发车频率不同时的信号交叉口排队长度计算结果表明，所有的结果都是排队长度随着发车频率的增大而增大。但是在不同的频率区域排队长度增长率有所不同，在频率处于某一区域时排队长度增长率有一个最小值。同时，在不同相邻交叉口间距离条件下排队长度也不是线性增大，在相邻交叉口间距离处于某一区域时排队车辆道路占有率也有一个最小值，为交通管理和规划提供一种思路和方法。
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