提出应急车辆在交叉口的可变导向车道优先控制概念,并建立交叉口车辆实时延误模型,制定对应的信号优先控制及时空组合优先控制策略,在实现应急车辆无延误的前提下,以交叉口车辆总延误最小为目标,建立多相位信号优化配时模型,并选用Lingo软件对该非线性约束优化问题进行求解.仿真结果表明,可变导向车道优先控制策略能够显著减小应急车辆在交叉口的延误,相较于传统的信号优先控制也能够减小对社会车辆延误的影响,具有更好的适用性.%The concept of "variable approach lane priority control" to the emergency vehicle is put forward the vehicles' real-time delay model is established and signal priority control and combination of space-time priority control strategy are set in this paper.Then on the condition that emergency vehicle has no delay at the intersection, the signal timing model of multiple phases is established to minimize total vehicle delay and the lingo software is used to solve the nonlinear constrained optimization problem.Simulation results show that, variable approach lane priority control strategy can significantly reduce the delay of emergency vehicle at intersection.Compared with the traditional signal priority control, this method can also reduce the influence on social vehicles' delay and has better applicability.
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