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TRB's National Cooperative Highway Research Program (NCHRP) Research Results Digest 400: Sample Size Implications of Multi-Day GPS-Enabled Household Travel Surveys summarizes an NCHRP project that studied the design of household travel surveys. Multi-day travel surveys are now more feasible, given global positioning system (GPS) technology. This project explores if surveys using a GPS device provides less drop-off in response compared to travel diaries. This project also investigates the effects of using multi-day data for developing travel demand models and explores the impact of sample size on multi-day versus single-day surveys.

Appendixes A through J are available online.

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Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2016. Sample Size Implications of Multi-Day GPS-Enabled Household Travel Surveys. Washington, DC: The National Academies Press. https://doi.org/10.17226/24614.

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Publication Info

34 pages |  8.5 x 11 |  DOI: https://doi.org/10.17226/24614
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Research Results Digest 400 Sample Size Implications of Multi-Day GPS-Enabled Household Travel Surveys 1-33

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