根据机动车辆行驶排队情况,本文提出一种等间隙、等间隔的车队流分布模型。根据声强迭加原理,从理论上推导出该模型车队流产生的噪声级以及评价,并分析了各种变化因素与车队流噪声的关系。从中探讨建立一个城市交通高峰期干线车队流噪声理论模型。该模型经过杭州市两条交通干线噪声的检验,具有一定的实用价值。 According to the running queues of motor vehicles, an equi-gap and equidistant fleet flow distribution model is proposed in this paper. According to the principle of superposition of sound intensity, the noise level and evaluation of the model fleet flow are theoretically deduced, and the relationship between various factors and fleet flow noise is analyzed. This paper discusses the theoretical model of flow noise of mainline convoy at the peak of urban traffic. After the model of Hangzhou two traffic trunk noise test, has some practical value.