设置间歇式公交专用道的道路路段通行能力

为了计算设置间歇式公交专用道的路段通行能力,在介绍间歇式公交专用道系统的基础上,应用移动瓶颈理论对路段通行能力进行了研究,给出了通行能力的计算公式;然后构建了设置间歇式公交专用道前后双车道元胞自动机交通流模型,对比了公式计算与模型模拟的结果。研究结果表明：通行能力随公交车运营车速的降低而下降;只有当发车间隔大于集结流的集结消散时间时,公交车的发车间隔才会影响路段的通行能力,此时通行能力随发车间隔的增大而增加。

Capacity of Road Section with Intermittent Bus Lane

In order to calculate road section capacity with intermittent bus lane（IBL）,based on the introduction of IBL system,the capacity was studied with moving bottleneck theory and capacity formulas were presented,and then,a two-lane traffic model with IBL based on cellular automaton was proposed.The capacity calculated and simulated was compared.Research result indicates that： the capacity increases along with bus operation speed;headway affects the capacity only when headway is greater than relaxation time of shockwave;meanwhile,capacity increases with headway.