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How Visual Cues on Steering Wheel Improve Users’ Trust, Experience, and Acceptance in Automated Vehicles

: Muthumani, Arun; Diederichs, Frederik; Galle, Melanie; Schmid-Lorch, Sebastian; Forsberg, Christian; Widlroither, Harald; Feierle, Alexander; Bengler, Klaus


Stanton, Neville (Ed.):
Advances in Human Aspects of Transportation : Proceedings of the AHFE 2020 Virtual Conference on Human Aspects of Transportation, July 16-20, 2020, USA
Cham: Springer Nature, 2020 (Advances in Intelligent Systems and Computing 1212)
ISBN: 978-3-030-50942-2 (Print)
ISBN: 978-3-030-50943-9 (Online)
ISBN: 978-3-030-50944-6
International Conference on Applied Human Factors and Ergonomics (AHFE) <11, 2020, Online>
Conference on Human Aspects of Transportation <2020, Online>
European Commission EC
H2020; 688900; ADASANDME
Adaptive ADAS to support incapacitated drivers Mitigate Effectively risks through tailor made HMI under automation
Conference Paper
Fraunhofer IAO ()

With the introduction of ADAS systems and vehicle automation, an interface informing the driver of the automation state is required. This study evaluates the suitability of a visual interface comprising up to 64 LEDs on the steering wheel perimeter; it displays continuous visual feedback about the automation state—including notifications of an unscheduled hand-over due to sudden system failure. Three HMI (Human Machine Interface) designs were evaluated: two versions with visual cues on the steering wheel and one without (baseline). We implemented the designs in a driving simulator and compared the subjective responses of 38 participants to questionnaires measuring user experience, trust, and acceptance. The designs with visual cues improved the participants’ user experience, as well as their trust in, and acceptance of, automated vehicles. Moreover, both designs were well perceived by participants.