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Investigating Pedestrians’ Interactions with Automated Buses: How Do External and Dynamic HMIs Affect Trust?

Lau, Merle and Jipp, Meike and Oehl, Michael (2022) Investigating Pedestrians’ Interactions with Automated Buses: How Do External and Dynamic HMIs Affect Trust? Annual Conference of the HFES Europe Chapter, 20. - 22. April 2022, Turin, Italien.

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Pedestrians as vulnerable road users highly depend on the communication with other road users. This also applies to their future interaction with automated vehicles (AVs), especially with larger sized AVs, as miscommunication can have serious consequences. Current research manifested that pedestrians need implicit communication, e.g., vehicle dynamics. Additionally, explicit communication is needed to clarify misunderstandings before they actually result in accidents. Two communication tools exist for AVs and stand in focus of this study: Dynamic Human-Machine Interfaces (dHMIs) for implicit communication and external Human-Machine Interfaces (eHMIs) for additional explicit communication. The interplay of both means of communication has not yet been sufficiently researched for larger sized vehicles. This experimental online study (N=120) addressed pedestrians' interactions with an automated bus on a shared space and focused on possible negative effects on pedestrians’ trust ratings when the eHMI contradicted the dHMI (non-matching condition). Results revealed that pedestrians' trust ratings were surprisingly high in the non-matching condition which represented a high-risk traffic scenario for them. These findings provided insights into possible negative effects of eHMIs when they do not match vehicle behavior (dHMI). An outlook on possible derivations for the design of a safe human-machine interaction between pedestrians and larger AVs is given.

Item URL in elib:https://elib.dlr.de/186259/
Document Type:Conference or Workshop Item (Poster)
Title:Investigating Pedestrians’ Interactions with Automated Buses: How Do External and Dynamic HMIs Affect Trust?
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Lau, MerleUNSPECIFIEDhttps://orcid.org/0000-0003-4852-034XUNSPECIFIED
Oehl, MichaelUNSPECIFIEDhttps://orcid.org/0000-0002-0871-2286UNSPECIFIED
Date:April 2022
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Automated vehicles, external Human-Machine Interface (eHMI)
Event Title:Annual Conference of the HFES Europe Chapter
Event Location:Turin, Italien
Event Type:international Conference
Event Dates:20. - 22. April 2022
Organizer:HFES Europe Chapter
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Transport System
DLR - Research area:Transport
DLR - Program:V VS - Verkehrssystem
DLR - Research theme (Project):V - Zukunftsbilder eines automatisierten integrierten Verkehrssystems (old)
Location: Berlin-Adlershof , Braunschweig
Institutes and Institutions:Institute of Transportation Systems > Information Flow Modelling in Mobility Systems, BS
Institute of Transportation Systems > Cooperative Systems, BS
Institute of Transport Research > Leitungsbereich VF
Deposited By: Lau, Merle
Deposited On:29 Apr 2022 14:08
Last Modified:25 Apr 2023 13:48

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