Analysis of Factors Affecting Real-Time Ridesharing Vehicle Crash Severity

Bei Zhou, Xinfen Zhang, Shengrui Zhang, Zongzhi Li and Xin Liu
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Bei Zhou: School of Highway, Chang’an University, Xi’an 710064, China
Xinfen Zhang: School of Highway, Chang’an University, Xi’an 710064, China
Shengrui Zhang: School of Highway, Chang’an University, Xi’an 710064, China
Zongzhi Li: Department of Civil, Architectural, and Environmental Engineering, Illinois Institute of Technology, Chicago, IL 60616, USA
Xin Liu: School of Highway, Chang’an University, Xi’an 710064, China

Sustainability, 2019, vol. 11, issue 12, 1-15

Abstract: The popular real-time ridesharing service has promoted social and environmental sustainability in various ways. Meanwhile, it also brings some traffic safety concerns. This paper aims to analyze factors affecting real-time ridesharing vehicle crash severity based on the classification and regression tree (CART) model. The Chicago police-reported crash data from January to December 2018 is collected. Crash severity in the original dataset is highly imbalanced: only 60 out of 2624 crashes are severe injury crashes. To fix the data imbalance problem, a hybrid data preprocessing approach which combines the over- and under-sampling is applied. Model results indicate that, by resampling the crash data, the successfully predicted severe crashes are increased from 0 to 40. Besides, the G-mean is increased from 0% to 73%, and the AUC (area under the receiver operating characteristics curve) is increased from 0.73 to 0.82. The classification tree reveals that following variables are the primary indicators of real-time ridesharing vehicle crash severity: pedestrian/pedalcyclist involvement, number of passengers, weather condition, trafficway type, vehicle manufacture year, traffic control device, driver gender, lighting condition, vehicle type, driver age and crash time. The current study could provide some valuable insights for the sustainable development of real-time ridesharing services and urban transportation.

Keywords: real-time ridesharing; crash severity; data imbalance; SMOTE+ENN; decision tree (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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