10:30 - 12:00
Tue-H5-Talk 5--49
Tue-Talk 5
Room: H5
Chair/s:
Mark Vollrath
Comparison of light-based cues after a take-over request in automated driving
Tue-H5-Talk 5-4903
Presented by: Kerstin Kuhlmann
Kerstin KuhlmannMark Vollrath
TU Braunschweig
SAE Level 3 automated driving requires the driver to switch from a non-driving task, such as playing with a tablet, to driving in a short period of time before a system limit is reached. If the drivers do not have a sufficient situation awareness at the take-over, this may be a safety risk. In previous studies, drivers have shown inadequate gaze behaviour after the take-over. A system-induced guidance of the gaze behaviour might help to improve perception and thus lead to increased situational awareness and safety. To find out the best way to guide the gaze a 4x2 within-subject experiment was conducted. Four variants of light cues were compared. After each take-over request the light cues occurred in four different areas (rear mirror, side mirror, Head-Up Display on the street, speedometer). Two orders of light cues were compared. The different light cues were developed based on attention attracting features such as size, movement and blinking. Usability ratings, driving behaviour and gaze behaviour were measured for N = 26 participants. After the participant has experienced all combinations of variants and orders of light cues, a post-session interview was conducted. Preliminary results indicate superiority of one variant. Especially during the post-session interview, the advantages of a blinking light cue were highlighted. Future studies will investigate the effect on situation awareness directly by using the SAGAT.

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