【摘要】 已有的公交优先控制策略缺乏关联交叉口间公交优先信号协调的考虑,并且仅对"晚点"车辆提供优先而忽视了"早到"车辆对系统可能的不利影响。基于对此问题的考虑,提出以交叉口群为控制对象,以车辆通过交叉口群延误偏差(正、负)最小化为控制目标的公交优先协调控制方法。提出分别面向"晚点"和"早到"车辆的"降低公交延误"和"增加公交延误"两类优先策略。并深入研究了构成该方法的公交延误预测,优先申请生成、优先策略及其延误计算、优先时间分配和优先策略协调优化5个子模型,给出求解方法。案例分析表明,该方法能够显著降低公交车辆延误,减少车头时距和车辆延误的波动程度,并且对社会车流的不利影响较小。同时,该方法有较好的优先效率,且其中"增加延误策略"提高公交可靠性的同时对非优先相位有一定的补偿作用。更多还原

【Abstract】 One problem with the existing bu s priority strategies is that priority strategies between adjacent intersections are not adequately coordinated. The effects of early arrival bus are also neglected. A new bus priority approach is proposed, with coordinated signalized intersection group being adopted as the control object and minimization of travel delay deviation at intersection group as the control objective. Two types of priority strategies, "increasing bus delay strategy" and "decreasing bus delay strategy" are proposed for "early" bus and "late" bus, respectively. Five component models are studied in depth: bus delay prediction model, priority request generation model, priority strategy and delay calculation model, priority time allocation model and coordination optimization model. A case study suggested that the proposed approach can decrease bus delay, bus delay deviation and headway deviation dramatically without significantly affecting other motor vehicles. The approach is efficient and the "increasing bus delay strategy" can increase the reliability of bus service while compensating no-priority phases.更多还原