Feasibility of estimating travel demand using geolocations of social media data

Yuan Liao (), Sonia Yeh and Jorge Gil
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Yuan Liao: Chalmers University of Technology
Sonia Yeh: Chalmers University of Technology
Jorge Gil: Chalmers University of Technology

Transportation, 2022, vol. 49, issue 1, No 6, 137-161

Abstract: Abstract Travel demand estimation, as represented by an origin–destination (OD) matrix, is essential for urban planning and management. Compared to data typically used in travel demand estimation, the key strengths of social media data are that they are low-cost, abundant, available in real-time, and free of geographical partition. However, the data also have significant limitations: population and behavioural biases, and lack of important information such as trip purpose and social demographics. This study systematically explores the feasibility of using geolocations of Twitter data for travel demand estimation by examining the effects of data sparsity, spatial scale, sampling methods, and sample size. We show that Twitter data are suitable for modelling the overall travel demand for an average weekday but not for commuting travel demand, due to the low reliability of identifying home and workplace. Collecting more detailed, long-term individual data from user timelines for a small number of individuals produces more accurate results than short-term data for a much larger population within a region. We developed a novel approach using geotagged tweets as attraction generators as opposed to the commonly adopted trip generators. This significantly increases usable data, resulting in better representation of travel demand. This study demonstrates that Twitter can be a viable option for estimating travel demand, though careful consideration must be given to sampling method, estimation model, and sample size.

Keywords: Social media data; Travel demand; Origin–destination estimation; Longitudinal data; Lateral data; Gravity model (search for similar items in EconPapers)
Date: 2022
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Citations: View citations in EconPapers (1)

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DOI: 10.1007/s11116-021-10171-x

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