Abstract
This study focuses on the effect of gradual transition from automated to manual driving on drivers’ behavior (at a time chosen by the driver). The experiments used a driving simulator; three types of gradual transitions were conducted based on the differences between the deactivation timings of the lane-keeping assist (LKA) and adaptive cruise control (ACC). In the first experiment, participants were instructed to conduct each transition while performing a visual task. In the second experiment, based on each of the transitions, drivers had to avoid a collision in congested traffic, which was found to occur just after switching to manual driving. In the present study, we discuss how each transition influenced driving performance and visual behavior just after the deactivation of automated driving.
