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Updated: Apr 7, 2026
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Observed and unobserved correlation between crash avoidance manoeuvers and crash severity
Sigal Kaplan1, Carlo Giacomo Prato1
1a Department of Transport , Technical University of Denmark , Kongens Lyngby , Denmark.
Summary
This study reveals an unobserved link between drivers' crash avoidance maneuvers and crash severity. Driver attributes, risky behavior, and road conditions influence both maneuver selection and severity outcomes.
Area of Science:
- Traffic Safety Research
- Human Factors in Driving
- Accident Analysis
Background:
- Understanding driver responses to critical events is crucial for crash prevention and mitigation.
- Existing research often overlooks the interplay between observable/unobservable factors influencing maneuver choice and crash severity.
Purpose of the Study:
- To investigate the determinants of crash avoidance maneuvers and their correlation with crash severity.
- To model the joint relationship between driver behavior, environmental factors, and crash outcomes.
Main Methods:
- Utilized a joint multinomial-logit ordered-probit model.
- Analyzed single-vehicle crash data from the NASS GES database (2005-2009).
Main Results:
- Confirmed an unobserved correlation between crash avoidance maneuvers and crash severity.
- Identified significant links between driver attributes, risky driving, road characteristics, environmental conditions, and crash outcomes.
Conclusions:
- Driver behavior and situational factors are interconnected with both the engagement in avoidance maneuvers and the resulting crash severity.
- Findings offer insights for developing targeted interventions to improve traffic safety and reduce accident consequences.
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