多模式网络公交OD矩阵的一种推算方法

Algorithm for Origin-Destination Matrix Estimation of Mutil-mode Network Bus Route

为了分析轨道交通对常规公交乘客选择出行方式的影响,用Dijkstra算法寻找出行时间最短的路径,在此基础上,以出行时间最短作为出行方式选择的规划目标,使用MATLAB软件,设计了轨道交通影响下的常规公交客流量OD矩阵的算法.与传统的重力模型相比,避免了估计阻抗系数的复杂过程.算例结果表明:为了换乘轨道交通,43.7%的公交站客流量增至轨道交通出现前的2.73倍;56.3%的公交客流量被轨道交通替代.

In order to analyze the impact of urban rail transit on the travel mode choice of conventional bus passengers, an algorithm for origin-destination matrix estimation of conventional bus passenger flow under the impact of urban rail transit was developed in MATLAB by using Dijkstra＇s algorithm to calculate the path with shortest travel time, where the minimum travel time was taken as the objective in travel mode choice. Compared with the traditional gravity model, this method can avoid the complicated process of estimating the impedance coefficient. The result of a case study show that in order to choose urban rail transit, the passenger flow at 43.7% of bus stations have increased to 2.73 times that before the advent of urban rail transit, and 56.3% of original bus passengers choose the urban rail transit system to substitute bus.