交通信息与安全2017，Vol.35Issue(2)：81-88,8.DOI:10.3963/j.issn.1674-4861.2017.02.012
交通小区划分对路网流量分配结果的影响分析
Effects of Dividing Methods for Traffic Analysis Zones on Distribution of Road Network Flow
摘要
Abstract
Different designing methods for Traffic Analysis Zones (TAZs) may lead to different forecasting results of traffic flow.It is important to select an appropriate dividing method to improve the precision of forecasting results.This paper takes arterials of Madrid, Spain as a case study to analyze the effects of different aggregation methods of TAZs.TransCAD software and a method of OD matrix estimations are adopted.Firstly, the effects of aggregating TAZs based on administrative districts and population distribution zones on forecasting results of distribution of road network flow are investigated.The number of TAZs is kept the same for different aggregation methods, namely the zonation effects on modifiable area unit.The results show that the dividing method for population distribution zones produces a result closer to the actual value.Then, the population distribution areas are further divided into three different degrees to compare the effects of number of TAZs on the forecasting result of road network flow, namely the scale effects on modifiable area unit.The results show that the accuracy is improved when the number of TAZs is increased.By incorporating population distribution or other traffic-geographic information into TAZs dividing, traffic flow of future years could be better predicted, and the smaller the TAZs are divided, the closer the prediction results would approach the actual situations.关键词
交通小区/行政区划/人口分布/小区数量/TransCADKey words
traffic analysis zone/administrative districts/population distribution/number of traffic analysis zones/TransCAD分类
交通工程引用本文复制引用
蒋萌露,邵敏华,孙立军..交通小区划分对路网流量分配结果的影响分析[J].交通信息与安全,2017,35(2):81-88,8.基金项目
上海市科委科研计划课题(16DZ1203602)、上海市科委科研计划项目(14231200603)资助 （16DZ1203602）
