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- W639005164 abstract "Practitioners have been aware of response bias in transit surveys for some time, particularly with respect to differences in response rates by individual routes and times of the day. More recently, transit planning practitioners have been focused on mitigating sampled flow bias; striving to ensure that the sampled or expanded sample flows reflect actual conditions. Two applied solutions have been utilizing iterative proportion fitting (IPF) techniques and collecting auxiliary flow data. These strategies have been applied in relatively straightforward situations, such as closed transit systems with known passenger entry and exit movements or single transit route/line scenarios. This paper presents the systemwide application of both techniques to a bus system with 66 routes and approximately 60,000 boardings per day. To the authors’ knowledge, this is the first time such a rigorous and intensive expansion methodology has been applied at a systemwide level in the United States. Evidence supporting the mitigation of flow bias evident in standard sample expansion techniques is presented. Issues and challenges associated with this intensive effort are presented, and process improvements for future endeavors are provided. Future research suggestions are also presented." @default.
- W639005164 created "2016-06-24" @default.
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- W639005164 date "2015-01-01" @default.
- W639005164 modified "2023-09-24" @default.
- W639005164 title "Application of Mitigating Flow Bias from Bus Origin-Destination Surveys in a Transit System" @default.
- W639005164 hasPublicationYear "2015" @default.
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