Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/107083
Title: | Traffic safety assessment and injury severity analysis for undivided two-way highway-rail grade crossings | Authors: | Ren, Q Xu, M Zhou, B Chung, SH |
Issue Date: | Feb-2024 | Source: | Mathematics, Feb. 2024, v. 12, no. 4, 519 | Abstract: | The safety and reliability of undivided two-way highway–rail grade crossings (HRGCs) are of paramount importance in transportation systems. Utilizing crash data from the Federal Railroad Administration between 2020 and 2021, this study aims to predict crash injury severity outcomes and investigate various factors influencing injury severities. The χ2 test was first used to select variables that were significantly associated with injury outcomes. By employing the eXtreme Gradient Boosting (XGBoost) model and interpretable SHapley Additive exPlanations (SHAP), a cross-category safety assessment that offers an evidence-based hierarchy and statistical inference of risk factors associated with crashes, crossings, vehicles, drivers, and environment was provided for killed, injured, and uninjured outcomes. Some significant predictors overlapped between the killed and injured models, such as old driver, driver was in vehicle, main track, went around the gate, adverse crossing surface, and truck, while the other different significant factors revealed that the model could distinguish between different severity levels. Additionally, the results suggested that the model has varying performances in predicting different injury severities, with the killed model having the highest accuracy of 93.36%. The SHAP dependency plots for the top three features also ensure reliable predictions and inform potential interventions aimed at strengthening traffic safety and risk management practices, such as enhanced warning systems and targeted educational campaigns for older drivers. | Keywords: | HRGC crashes Injury severity Reliability estimation and mathematical statistics Risk management SHAP Traffic safety Transportation system XGBoost |
Publisher: | MDPI AG | Journal: | Mathematics | EISSN: | 2227-7390 | DOI: | 10.3390/math12040519 | Research Data: | https://railroads.dot.gov/accident-and-incident-reporting/highwayrail-grade-crossing-incidents/highwayrail-grade-crossing | Rights: | Copyright: © 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). The following publication Ren Q, Xu M, Zhou B, Chung S-H. Traffic Safety Assessment and Injury Severity Analysis for Undivided Two-Way Highway–Rail Grade Crossings. Mathematics. 2024; 12(4):519 is available at https://doi.org/10.3390/math12040519. |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
mathematics-12-00519.pdf | 1.86 MB | Adobe PDF | View/Open |
Page views
13
Citations as of Jun 30, 2024
Downloads
5
Citations as of Jun 30, 2024
SCOPUSTM
Citations
1
Citations as of Jun 21, 2024
WEB OF SCIENCETM
Citations
1
Citations as of Jun 27, 2024
![](/image/google_scholar.jpg)
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.