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Effects of Situation Awareness and Decision Making on Safety, Workload and Trust in Autonomous Vehicle Take-over Situations  

Kim, Jihyun (연세대학교 UX전공)
Lee, Kahyun (연세대학교 UX전공)
Byun, Youngsi (연세대학교 UX전공)
Publication Information
Journal of the HCI Society of Korea / v.14, no.2, 2019 , pp. 21-29 More about this Journal
Abstract
Take-over requests in semi-autonomous cars must be handled properly in the case of road obstacles or curved roads in order to avoid accidents. In these situations, situation awareness and appropriate decision making are essential for distracted drivers. This study used a driving simulator to investigate the components of auditory-visual information systems that affect safety, workload, and trust. Auditory information consisted of either voice guidance providing situation awareness for the take-over or a beep sound that only alerted the driver. Visual information consisted of either a screen showing how to maneuver the vehicle or only an icon indicating a take-over situation. By providing auditory information that increased situation awareness and visual information that aided decision making, trust and safety increased, while workload decreased. These results suggest that the levels of situation awareness and decision making ability affect trust, safety, and workload for drivers.
Keywords
Autonomous Vehicle; Take-over Request; Situation Awareness; Decision Making;
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