摘要
讨论了抽样率对ＯＤ调查结果的影响。凡抽样调查均会致使ＯＤ调查结果发生部分重复，在实际中其重复率只有当各调查点的抽样率相同时才能近似计算出来。建议ＯＤ调查时宜尽量采用贴标签法全样调查；在必须采用抽样调查的地区进行路网ＯＤ调查时，应使所有调查点的抽样率一致。
How the result of an OD survey is influenced by the ratios of sampling is disscussed.The study shows that the result of every sampling OD survey involves some redundant counting which can be approximately calculated only when the ratios of sampling are the same in all the sections to be surveyed.It is proposed that all the vehicles past the sections are labeled and surveyed as far as possible,and if it is impossible,the same ratios of sampling are chosen in all the sections to be surveyed.
关键词
交通规划
交通调查
OD调查
抽样率
highway network planning
origin-destination survey
ratio of sampling
