Predicting Driver Takeover Time in Conditionally Automated Driving

• URL: http://arxiv.org/abs/2107.09545v1
• Date: Tue, 20 Jul 2021 15:01:49 GMT
• Title: Predicting Driver Takeover Time in Conditionally Automated Driving
• Authors: Jackie Ayoub, Na Du, X. Jessie Yang, Feng Zhou
• Abstract summary: One of the critical factors that quantifies the safe takeover transition is takeover time. Previous studies identified the effects of many factors on takeover time, such as takeover lead time, non-driving tasks, modalities of the takeover requests (TORs) and scenario urgency. We used eXtreme Gradient Boosting to predict takeover time using a dataset from a meta-analysis study.
• Score: 14.861880139643942
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: It is extremely important to ensure a safe takeover transition in conditionally automated driving. One of the critical factors that quantifies the safe takeover transition is takeover time. Previous studies identified the effects of many factors on takeover time, such as takeover lead time, non-driving tasks, modalities of the takeover requests (TORs), and scenario urgency. However, there is a lack of research to predict takeover time by considering these factors all at the same time. Toward this end, we used eXtreme Gradient Boosting (XGBoost) to predict the takeover time using a dataset from a meta-analysis study [1]. In addition, we used SHAP (SHapley Additive exPlanation) to analyze and explain the effects of the predictors on takeover time. We identified seven most critical predictors that resulted in the best prediction performance. Their main effects and interaction effects on takeover time were examined. The results showed that the proposed approach provided both good performance and explainability. Our findings have implications on the design of in-vehicle monitoring and alert systems to facilitate the interaction between the drivers and the automated vehicle.

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