摘要
提出了基于混合整数线性规划概念的改进干道协调控制方法,建立了以系统整体各路段带宽之和最大的目标函数。该算法生成可变带宽方案,每个方向各路段分配一个独立的权重以适应各路段的交通流,并且消除了在MULTI-BAND方法中以通过带中心线为基础计算两边带宽所带来的带宽优化局限问题。通过调整周期、相位差、通过带车速使得带宽之和最大来确定最优解。通过VISSIM仿真得到的评价结果表明,该算法在平均延误和停车次数上有显著的改善。
An improved algorithm for arterial traffic coordinated control based on mixed integer linear programming(MILP) concept was described.An objection function of maximum sum of bandwidths on all sections was built.This algorithm generates variable bandwidth scheme in which each directional road section is allocated an individual weighted band that can be adapted to the traffic flow on that link,and eliminates the problem of limitation in bandwidth optimization that caused by using the centerline to calculate the bandwidth with MULTI-BAND method.It determines the optimal solution by adjusting cycle time,offset,progression speeds to maximize the sum of bandwidths.Evaluation result using VISSIM simulation shows that significant improvements in average delay and stops are possible with this algorithm.
出处
《公路交通科技》
CAS
CSCD
北大核心
2009年第S1期93-96,共4页
Journal of Highway and Transportation Research and Development
基金
国家自然科学基金自由申请项目(50878088)
