Presentation
Impact of eHMI on Pedestrians at Uncontrolled Intersections: Level-5 Automated Driving System Interactions
SessionPoster Session 1
DescriptionEach year, over half of global traffic fatalities involve vulnerable road users (e.g. pedestrians) due to human error. Level-5 Automated Driving Systems (ADSs) could reduce driver errors that contribute to accidents involving pedestrians, though this potential depends on how easy they are for other road users to interact with. External human-machine interfaces (eHMIs) have been proposed to facilitate communication between pedestrians and level-5 ADSs, though there is no consensus on which eHMI features are the best. In an online survey, 160 participants responded to road-crossing scenarios involving a level-5 ADS, both with and without an eHMI designed around pedestrians' informational needs. With the eHMI equipped, pedestrians crossed earlier and more confidently than without the eHMI, and fewer avoided crossing altogether. Participants also reported that the eHMI significantly increased perceptions of safety, trust, and understanding when interacting with level-5 ADSs. Visual eHMI features (including the text display and external speedometer) were ranked as more necessary than auditory ones, though auditory cues were valued highly in open-ended feedback. This study found that eHMIs can significantly improve pedestrians’ understanding of level-5 ADSs’ intent and improve perceptions of safety and trust, allowing for more efficient interactions between the pedestrians and level-5 ADSs.
Event Type
Poster
TimeTuesday, October 14th5:30pm - 6:30pm CDT
LocationRiverside East
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