拥堵状态下单行信号控制交叉口的通行能力分析

为拟合拥堵状态下通行能力降低的特性，对拥堵状态下单行信号控制交叉口的通行能力计算方法进行了优化。首先，研究了停车线法、HCM法与规范法在计算通行能力的不足，并在此基础上建立了基于HCM通行能力模型和停车线法的综合计算模型；其次，通过实地调查采集了拥堵状态下单行信号控制交叉口的实际通行能力值，并在此基础上对停车线法、HCM法、综合法进行了对比分析。计算结果表明：综合法计算得到的进口道通行能力值与实测值的误差均小于5％，优于现有的通行能力计算方法。

Capacity analysis of signal intersection under one-way management in congestion status

In order to match the capacity-reducing characteristics under the condition of congestion, this paper optimizes the meth- od of calculating the capacity of signal intersection under the one-way management in this status. Firstly, we studied the shorta- ges of existing capacity calculating methods, i. e. , stop line method, HCM method and specification-based method; on this basis, we proposed a synthetic method combining HCM method with stop line method. Secondly, we compared the actual capacity val- ues obtained by investigations at two intersections with the calculated values. The results shows that the synthetic method outper- forms other methods with the relative error less than 5%.