Balancing Effectiveness and User Experience in Light Cue Design: Enhancing Situation Awareness in Conditional Automated Driving.
Tue—Casino_1.811—Poster2—5607
Presented by: Kerstin Kuhlmann
Take-over situations can be a safety risk in conditional automated driving. It is therefore important to support the driver during take-overs. A major problem is the driver’s lack of situation awareness. To improve situation awareness, a previous study compared four different light cues aiming to guide the drivers‘ gaze towards important areas. The results showed that light cues can direct the driver‘s gaze to relevant areas. However, the most effective variant was not the one with the best user experience. Based on the pre-study results, an adapted variant was developed to provide a better user experience while remaining effective. This follow-up study compares the adapted version with a variant with better user experience than other variants from the pre-study. In a driving simulator, N = 25 participants experienced four highway scenarios, encountering both light cue variants twice. Usability ratings were collected after each trial. In addition, a post-session interview was conducted. Neither the usability ratings nor the interview revealed differences in preference between the two variants. However, the participants described different aspects that they (dis-)liked about the variants. Thus, there seems to be no superior variant in terms of user experience. However, the results show that the adaptation of the effective variant enhanced the user experience as it reached comparable levels to the control variant. Our findings provide valuable insights for the design of light cues in conditional automated driving, emphasizing the need for solutions that are both functional and user-friendly to enhance drivers’ situation awareness in critical situations.
Keywords: automated driving, take-over requests, light cues, usability, driver attention, situation awareness