基于居民出行时耗与出行比例关系的OD矩阵估算新方法

New OD Matrix Estimation Method Based on the Character of Trip Time Distribution

建立了基于居民出行时耗与出行比例关系的OD矩阵估算新方法,该方法依据出行时耗分布规律进行,将小区出行量离散为不同出行时耗区间的出行量,并根据出行时耗区间所覆盖的交通吸引小区的面积及吸引量进行交通分布,方法运用中还可根据城市不同区域交通特征调整区域居民出行时耗分布,从而克服了重力模型OD估算结果与出行时耗特征不一致及模型参数全局不变等缺点。实例证明了该方法优于重力模型OD矩阵估算精度。

In this paper, a new OD matrix estimation method is put forward. The new method disperses each producing zone total trip into several sections based on the character of trip time distribution （trip distance distribution）, with each section according with an interval trip time. Each interval trip time covers several traffic absorbing zones. Then, according to the area and absorbing trip volumes of those absorbing zones, the producing zone trip can be distributed to those zones. Because this method can adjust the trip time distribution according to the producing zone character, it is more accurate than gravity model. Finally, an example proved the value of this new method.