摘要
随着现代有轨电车线路的增加,出现了多条电车线路在交叉口通行的情形,为保障路口通行安全,提升电车信号优先效率,对电车线路交叉形式和路口通行冲突进行分析,针对多线路电车优先请求,综合考虑线路冲突特征、请求参数、早晚点时间以及路口相位相序等因素,建立优先级别判别函数对各线路请求进行实时排序,并采取相应信号优先控制策略响应电车请求队列。以深圳市龙华电车路口为例,搭建VISSIM仿真平台与无信号优先和请求顺序信号优先方法进行对比,结果显示平均延误时间分别缩减了57.4%和20.4%,验证了本文算法的有效性,因本文算法综合了线路特征和相位因素,对高频班次、多线路电车的优先控制效果提升更加明显。
With the increase of modern tramcar lines, the situation of several lines of tramcar crossing the intersection is appearing. To ensure the safe crossing of the tramcars at the intersection and improve the priority efficiency of the tramcar signal, the cross form of the tramcar lines and the traffic conflicts at the intersection were analyzed. By considering the factors such as characteristics of the lines conflicts , request parameters, morning and evening time, the phase and phase sequence at intersections and other factors, a priority level discriminant function was established to sequence the requests of various lines in real time and the corresponding signal priority control strategy was adopted to respond to the tram request. Take Longhua tramcar intersection in Shenzhen city as an example, a VISSIM simulation platform was built to compare the no signal priority with that of requesting sequential signal priority method. The results showed that the average delay time was reduced by 57.4% and 20.4% respectively, thus, the effectiveness of the algorithm proposed in this paper was verified. Because of the comprehensive consideration of line characteristics and phase factors, this algorithm greatly improved the priority control effect of high-frequency shifts and multiline trams.
出处
《道路交通科学技术》
2019年第2期13-17,共5页
Road Traffic Science & Technology
关键词
智能交通系统
交通控制
有轨电车
多线路
信号优先
intelligent transportation system
traffic control
tramcar
multi-line
signal priority
