用EMME/2软件来估计0-D矩阵的实用方法

本研究的目的是用精确的数据来获得更准确的0－D矩阵．这些数据诸如TCSO－D矩阵，观测的路段交通量和通过EMME／2获取的快速公共论车O－D矩阵。首先，建立每个收费站的一个有效区域，每个收费站的出入量被分配到有效区域中的小区，这一分配好的0－D矩阵再被分配给由所有收费站和它们的有效区域组成的网络．其次，我们校正区域0－D矩阵，排除TCSO－D矩阵，目的是反映现测到的交通量，而将快速公共汽车和分配的路段交通量作为额外的交通量．与实际交通量相比，用估算过的交通小区0－D矩阵分配的交通量在整个公路网中只产生17．9％的偏差，并且分配的路段交通量和计算出的交通量的差异在所有计算的路段中大大减少．

A PRACTICAL APPROACH FOR ESTIMATING ORIGIN-DESTINATION MATRICES REFLECTING TOLL COLLECTION SYSTIM O-D MATRICES AND COUNTED LINK VOLUMES WITH EMME/2

The objective of this study is to obtain more accurate origin-Destination (O-D)mathces with exact data such as toll collection system (TCS) O-D matrices, counted link vol-umes and express bus O-D matrices by EMME/2. First, an effect region of each tollgate was set up. In and out volumes of each tollgate were distributed to zones in the effect region of it The disthbuted O-D was assigned to the network composed of all tollgates and their ef-fect zones. Next, we adjusted the regional O-D mathces exduding TCS O-D mathces in or-der to reflect the observed volumes considedng the express bus and the assigned link volumes as additional ones. The assigned volumes with the estimated traffic -zonal o -D mathces pro-duced the only 17.9% error all over the freeways when they were compared to the real traffic volimes and the difference between assigned link volumes and counted ones is reduced very much all over the counted links.