Chapter
Jul 2, 2019
Modeling E-Bike Crash Severity by Accounting for Unobserved Heterogeneity in China
Authors: Yao Wu [email protected], Yanyong Guo [email protected], and Jian Lu [email protected]Author Affiliations
Publication: CICTP 2019
Abstract
This study investigates factors that significantly contribute to the severity of electric bike crashes. Two months e-bike crash data were collected in city of Ningbo, China. A random parameters multinomial logit model is developed to account for the potential unobserved heterogeneous effects. The Markov chain Monte Carlo simulation-based full Bayesian approach is employed to estimate the model parameters. Both parameter estimates and odds ratio are developed and used to interpret the model. The estimation results show that the impacts of contributing factors which significantly affect the severity of the e-bike crash differ across severity categories. Modeling results show that age, gender, e-bike behavior, license plate use, bicycle type, location, and speed limit are statistically significant contribute to the severity of electric bike crashes. The variables of gender, e-bike behavior, bicycle type, and speed limit are found to have heterogeneous effects, appearing in the form of random parameters in the statistical model.
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© 2019 American Society of Civil Engineers.
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Published online: Jul 2, 2019
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Jiangsu Key Laboratory of Urban ITS, Jiangsu Collaborative Innovation Center of Modern Urban Traffic Technologies, School of Transportation, Southeast Univ., Si Pai Lou No. 2, Nanjing 210096, China. E-mail: [email protected]
Jiangsu Key Laboratory of Urban ITS, Jiangsu Collaborative Innovation Center of Modern Urban Traffic Technologies, School of Transportation, Southeast Univ., Si Pai Lou No. 2, Nanjing 210096, China. E-mail: [email protected]
Jiangsu Key Laboratory of Urban ITS, Jiangsu Collaborative Innovation Center of Modern Urban Traffic Technologies, School of Transportation, Southeast Univ., Si Pai Lou No. 2, Nanjing 210096, China. E-mail: [email protected]
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