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Aug 12, 2020
Determinants of Crash Fatalities in Urban Area: A Bayesian Ordered Probit with Sample Selection Model
Authors: Daiquan Xiao [email protected], Xiaofei Jin [email protected], Xuecai Xu [email protected], and Shengyang Kang [email protected]Author Affiliations
Publication: CICTP 2020
ABSTRACT
Crash fatalities in urban area are a major public concern, and determinants are of major interest to the officials of traffic departments, policy makers, and researchers, among others. In this study, the Bayesian ordered probit with sample selection model is presented as a methodological alternative in analyzing crash fatalities so as to determine the influencing factors in urban area. The crash dataset from 2014 to 2017 maintained by Nevada Department of Transportation is employed to illustrate the performance of this model. A two-step estimation procedure is conducted, in which the Heckman sample selection model determines the sample selection process, while the Bayesian ordered probit model accounts for the probability of crash fatalities. By comparing with the Bayesian ordered probit model, the proposed model outperforms in terms of goodness-of-fit, and the determinants of crash fatalities are identified. The findings provide insights for the officials, planners, and policy makers.
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© 2020 American Society of Civil Engineers.
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Published online: Aug 12, 2020
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1School of Civil Engineering and Mechanics, Huahzong Univ. of Science and Technology, Wuhan 430074, China. Email: [email protected]
2School of Civil Engineering and Mechanics, Huahzong Univ. of Science and Technology, Wuhan 430074, China. Email: [email protected]
3School of Civil Engineering and Mechanics, Huahzong Univ. of Science and Technology, Wuhan 430074, China. Email: [email protected]
4School of Civil Engineering and Mechanics, Huahzong Univ. of Science and Technology, Wuhan 430074, China. Email: [email protected]
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