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Assessing traffic vulnerability to climate hazards in cold regions: the impact of harsh winters conditions on highway traffic volumes

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  • Hyuk-Jae Roh
  • Babak Mehran

Abstract

The winter traffic models use five years of weigh-in-motion (WIM) data from the commuter roadway. This study used a model to calculate the percentage drop for each vehicle type, such as total, passenger cars, and truck traffic, based on 266 weather combinations consisting of seven cold categories and varied snowfalls. The developed models evaluate the marginal impact and combined effect of meteorological conditions on the proportional decrease in winter traffic volume. The predicted percentage decrease in traffic for all three vehicle classes rises as temperature and snowfall worsen. A mathematical formula was proposed to forecast the decreasing percentage trends. Roadway authorities may utilize the findings in the research to determine when to execute snowplowing operations for winter highway maintenance.

Suggested Citation

  • Hyuk-Jae Roh & Babak Mehran, 2026. "Assessing traffic vulnerability to climate hazards in cold regions: the impact of harsh winters conditions on highway traffic volumes," Transportation Planning and Technology, Taylor & Francis Journals, vol. 49(4), pages 784-811, May.
    • Handle: RePEc:taf:transp:v:49:y:2026:i:4:p:784-811
    DOI: 10.1080/03081060.2025.2465557
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