Coordination of Takeover Maneuvers in Highly Automated Driving Considering Driver Availability

One of the central problems in conditionally and highly automated driving is the design of a safe and comfortable transition of the driving task between the automated system and the human driver and vice versa. This paper presents a holistic model for the transfer and assumption of driving tasks, which should enable a transfer adapted to the driver's condition by means of comprehensive driver observation using various sensors and reference sensors. Conflict situations between driver and automated system should be detected and solved by a technically implemented coordinator, taking into account the driver status and the system status. In a Wizard-of-Oz test drive, the change in the sensory, motoric and emotional driver state, which are central components of the transitions model, will be analyzed in detail using two takeover scenarios. Slightly slower reactions of test persons after non driving related tasks and a clearly increasing stress level after takeovers were observed.