A two-stage mining framework to explore key risk conditions on one-vehicle crash severity

► A two-stage mining framework is proposed to identify key risk conditions of crash severity. ► A genetic mining rule model is developed to identify the potential risk conditions. ► A mixed logit model is used to test the significance of the risk conditions. ► A case study on Taiwan freeway one-vehicle crash cases has been conducted. ► Discussions of key risk conditions with corresponding countermeasures are addressed.