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Abstract Substantial research in highway safety has focused on roadway crash frequency analysis; however, only a few studies have focused on the safety at highway-rail grade crossings (HRGCs). This study aimed to determine factors affecting the frequency of crashes at HRGCs. The statistical modeling and analysis were based on five years of HRGC crashes (2017–2021) that occurred on state-maintained HRGCs in Florida. Police reports of 2,092 crashes flagged as "railroad crossing" were downloaded and reviewed. The manual review of the police reports indicated that only 1,690 reports were classified as HRGC crashes. The Bayesian negative binomial model was applied to identify various contributing factors associated with the frequency of HRGC crashes. The following variables significantly increase the number of HRGC crashes: high-speed facilities, number of tracks, facilities with 4 to 5 lanes, presence of railroad crossing gates, proximity to a traffic control signal, and high traffic volume. To mitigate these risks, engineering treatments such as improved signing and pavement markings and implementation of Intelligent Transportation Systems (ITS) technologies are recommended.
Soltaninejad et al. (Tue,) studied this question.
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