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Identifying regional characteristics of transportation research with Transport Research International Documentation (TRID) data

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  • Sun, Yanshuo
  • Kirtonia, Sajeeb

Abstract

Since the planning and operations of transportation systems depend on factors ranging from economic to political, which tend to vary significantly over geographic regions (geoRegions), the following research question arises: do transportation topics in various geographic regions differ significantly? A review of existing transportation bibliographic studies shows that the information on the geographic location of study areas is seldom available and thus rarely analyzed. This study thus presents a geoRegion-topic model that extends a widely used topic model, latent Dirichlet allocation, to explore the region-specific characteristics of transportation research based on large-scale bibliographic data collected from Transport Research International Documentation. Top geographic regions that are frequently used as study areas in transportation research are identified at both the country/region and U.S. state levels. The results confirm that transportation research exhibits clear region-specific characteristics, namely each geographic region is associated with a unique transportation topic distribution. After exploring the relation between topic similarity and geographic proximity, we find in general countries/regions that are geographically proximate have quite similar transportation topic distributions, while this correlation cannot be observed at the U.S. state level. Other relevant findings are also reported, along with potential bias in the analysis.

Suggested Citation

  • Sun, Yanshuo & Kirtonia, Sajeeb, 2020. "Identifying regional characteristics of transportation research with Transport Research International Documentation (TRID) data," Transportation Research Part A: Policy and Practice, Elsevier, vol. 137(C), pages 111-130.
    • Handle: RePEc:eee:transa:v:137:y:2020:i:c:p:111-130
    DOI: 10.1016/j.tra.2020.05.005
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    References listed on IDEAS

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    1. Derudder, Ben & Liu, Xingjian & Hong, Song & Ruan, Shuhe & Wang, Yifei & Witlox, Frank, 2019. "The shifting position of the Journal of Transport Geography in ‘transport geography research’: A bibliometric analysis," Journal of Transport Geography, Elsevier, vol. 81(C).
    2. Biehl, Alec & Chen, Ying & Sanabria-Véaz, Karla & Uttal, David & Stathopoulos, Amanda, 2019. "Where does active travel fit within local community narratives of mobility space and place?," Transportation Research Part A: Policy and Practice, Elsevier, vol. 123(C), pages 269-287.
    3. Modak, Nikunja M. & Merigó, José M. & Weber, Richard & Manzor, Felipe & Ortúzar, Juan de Dios, 2019. "Fifty years of Transportation Research journals: A bibliometric overview," Transportation Research Part A: Policy and Practice, Elsevier, vol. 120(C), pages 188-223.
    4. Faghih-Imani, Ahmadreza & Anowar, Sabreena & Miller, Eric J. & Eluru, Naveen, 2017. "Hail a cab or ride a bike? A travel time comparison of taxi and bicycle-sharing systems in New York City," Transportation Research Part A: Policy and Practice, Elsevier, vol. 101(C), pages 11-21.
    5. Sun, Lijun & Rahwan, Iyad, 2017. "Coauthorship network in transportation research," Transportation Research Part A: Policy and Practice, Elsevier, vol. 100(C), pages 135-151.
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