信控交叉口公交专用车道动态共享实时控制方法

针对目前交叉口拥堵、公交专用车道利用率低的问题，提出一种信控交叉口公交专用车道动态共享实时控制方法。利用GPS定位实时获取交叉口处公交车的位置，并通过交通检测设备获取专用道内小汽车车辆数，结合主信号显示情况综合计算当前时刻公交专用道共享前后交叉口车辆总延误。将延误大小判断结果反馈给车道信号，车道信号显示红灯或绿灯以提醒司机是否能够进入公交专用道。引入受影响车辆概念，建立以减少交叉口车辆总延误为目标的公交专用车道共享控制模型。通过对当前时刻主信号显示红灯和显示绿灯两种情况分析，提出一种综合考虑车辆司乘系数、受影响车辆的交叉口延误计算方法，得到共享公交专用车道前后交叉口车辆总延误差值的表达式。利用示例数值模拟在多种不同场景下车道信号的显示情况，分析了专用道内已有车辆、公交车位置以及主信号显示情况对车道共享的影响。结果表明：该控制方法较符合实际情况，并能有效提高公交专用车道利用率，能够充分利用交叉口绿灯时间，为解决公交专用车道的动态共享、缓解道路拥堵提供了一种新的思路。

Dynamic bus lane sharing real-time control method at signal-controlled intersections

Aiming at the problems of current intersection congestion and low utilization rate of bus lanes, this paper proposes a real-time sharing control method for dynamic bus lanes based at signal-controlled intersections. This method uses GPS to obtain real-time information on the locatin of the bus at the intersection, and obtains the number of vehicles in the bus lane through traffic detection equipment. Combined with the main signal display, the method comprehensively calculates the total delay of vehicles at the intersection before and after the bus lane sharing at the current moment. Based on the comparison results of the delay size feeding back, the lane signal shows red or green lights to tell drivers if they can enter the bus lane. This paper introduces the concept of affected vehicles, and establishes the bus lane sharing control model aiming at reducing the total vehicle delay at the intersection. Through the analysis of the two situations where the main signal showing red and green light at the current moment, this paper proposes a comprehensive calculation method for intersection delay of affected vehicles, considering the driver-occupant coefficient and the affected vehicles. The expression of the total delay difference of vehicles at the intersection before and after the bus lane sharing has been obtained. This paper numerically simulates the display of the lane signal in various scenarios to analyze the impact of factors on lane sharing, such as existing vehicles in the dedicated lane, the position of buses, and the status of the main signal display. The results demonstrate that the control method aligns well with real-world situations and effectively improves the utilization rate of the bus lane, making full use of green light time at the intersection. This method provides a new idea for synamically sharing of bus lanes and alleviating road congestion.