基于交通区数目抽样率确定新方法

A New Method to Determine the Sampling Rate of OD Survey Based on the Number of Traffic Area

编程模拟了OD调查抽样随机试验,证明随着小区数量的增加调查样本的数量将大幅增加,并量化分析交通小区数量、调查精度要求和OD矩阵元素不均匀程度对抽样样本量的影响。建立了OD调查样本量与影响因素关系模型,提出OD调查样本量(或抽样率)确定方法,该方法克服了常规方法中无法考虑交通小区个数和区间出行不均匀弊端。

This article proves that the number of survey sample will increase largely with the number of traffic area by using the random number to simulate the OD survey sampling test. And quantitative analysis of the influence from the number of traffic areas, the precision of OD survey, and the irregularity of OD matrix elements was finished. A new model of the relationship between the number of OD survey sample and the factors was established based on the random simulation test. Also, a new method to confirm the number of OD survey sample was raised , which overcomes the abuse caused by taking no consideration of the number of traffic areas and the irregularity of travel of the traditional method.