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Selection of at-grade highway-rail crossings for grade separation

Xue Yang, Joshua Q. Li, Wenyao Liu, Kelvin C. P. Wang, Jim Hatt and Jared Schwennesen

International Journal of Rail Transportation, 2023, vol. 11, issue 2, 227-247

Abstract: Highway-rail at-grade crossings (HRGCs) are critical spatial locations of utmost importance for transportation safety. Using the national HRGC inventory database and 5 years of accident data in Oklahoma, a data-driven hierarchical evaluation process was developed for identifying and prioritizing potential HRGCs as candidates for grade separations, which includes four sequential levels of analyses: the practice guidelines, hazard index-based ranking, safety analysis, and full investment analysis. Various types of benefits, in terms of traffic safety, travel time, vehicle operating cost, and environment, were considered. The top-ranked HRGCs were identified and their ranking results were compared among the different methods. The prioritization results were mostly consistent while with several exceptions. This study relied on existing analysis tools and developed a comprehensive while practical sequential prioritization process, which can be directly implemented at state highway agencies for statewide selection of grade separation projects.

Date: 2023
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DOI: 10.1080/23248378.2022.2060359

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International Journal of Rail Transportation is currently edited by Wanming Zhai and Kelvin C. P. Wang

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