Bus lanes with intermittent priority: Strategy formulae and an evaluation
Bus lanes with intermittent priority: Strategy formulae and an evaluation
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DOI：
10.1016/j.trb.2005.10.001
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发表时间：
2006-11
影响因子：
6.8
通讯作者：
Michael Eichler;C. Daganzo
中科院分区：
文献类型：
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作者：
Michael Eichler;C. Daganzo
本文评估了在信号控制的主干道上使用间歇性为普通交通提供的专用车道来运营公交车的策略。公交专用道，无论是间歇性的还是专用道，其优点是使公交车不受交通干扰，缺点是扰乱交通。我们发现，与专用公交专用道不同，间歇性优先公交专用道并不会显著减少街道的通行能力。然而，间歇性增加了满足需求的平均交通密度，因此增加了交通延误。只要交通需求不超过非专用车道可能达到的最大流量，这些延误就会被巴士乘客带来的好处抵消得更多；超出的越少越好。闪光灯不适用于接近或超出通行能力的道路。决定间歇系统是否节省时间的主要因素是：交通饱和程度；公交班次；专用车道对公交出行时间的改善；公交车与车流的比例。在一些无法运营公交专用道的情况下，一次短暂的停车可以为公交车和小汽车乘客每公里节省多达20人-分钟的路程。发生这种情况所需的条件是相当特殊的。典型的储蓄规模较小。给出了计算公式。
This paper evaluates strategies for operating buses on signal-controlled arterials using special lanes that are made intermittently available to general traffic. The advantage of special bus lanes, intermittent or dedicated, is that they free buses from traffic interference; the disadvantage is that they disrupt traffic. We find that bus lanes with intermittent priority (BLIPs), unlike dedicated ones, do not significantly reduce street capacity. Intermittence, however, increases the average traffic density at which the demand is served, and as a result increases traffic delay. These delays are more than offset by the benefits to bus passengers as long as traffic demand does not exceed by much the maximum flow possible on the non-special lanes; the smaller the excess the better. BLIPs are not intended for roadways nearing or in excess of capacity. The main factors determining whether an intermittent system saves time are: the traffic saturation level; the bus frequency; the improvement in bus travel time achieved by the special lane; and the ratio of bus and car occupant flows. In some scenarios where a dedicated bus lane could not be operated, a BLIP can save to bus and car occupants together as much as 20 persons-min of travel per bus-km. The required conditions for this to happen are quite particular. Typical savings are smaller. Formulae are given.