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Design of External Human-Machine Interfaces for Different Vehicle Types

Lau, Merle and Le, Duc Hai and Oehl, Michael (2021) Design of External Human-Machine Interfaces for Different Vehicle Types. 63rd Conference of Experimental Psychologists TeaP@Home 2021, 14.-16. März 2021, Virtual.

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Future traffic will be determined by the joint interaction of highly automated vehicles (AV) and other traffic participants, e.g., pedestrians, in mixed traffic environments. To ensure a safe and efficient traffic flow, AVs must be able to communicate with the traffic environment. An external human-machine interface (eHMI) seems to be a promising solution to transmit explicit information to other traffic participants and to enable an adequate communication. However, it remains unclear how information needs differ for different vehicle types and how this must be considered in the eHMI design. Therefore, this experimental online study investigates information needs when interacting with two different AV types (car vs. bus) both equipped with the same eHMI communication strategies (mode awareness, intention-based, perception-based, combination) based on a LED light-band as eHMI. Video sequences were shown in which the participants crossed a shared space from a pedestrian’s perspective in front of both vehicle types equipped with the eHMI communication strategies. Results showed that participants felt significantly safer for both vehicle types (car and bus) for all three eHMI explicit communication strategies (intention-based, perception-based, combination) vs. mere mode awareness or no eHMI at all. Comparing both vehicle types (car vs. bus), descriptive statistics indicated that participants felt safer and more comfortable when interacting with a car compared to a bus. This effect was significant for the perceived comfort showing that participants felt more comfortable when interacting with a car compared to a bus both equipped with an eHMI communication strategy combining intention-based and perception-based eHMI.

Item URL in elib:https://elib.dlr.de/141202/
Document Type:Conference or Workshop Item (Speech)
Title:Design of External Human-Machine Interfaces for Different Vehicle Types
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Lau, MerleUNSPECIFIEDhttps://orcid.org/0000-0003-4852-034XUNSPECIFIED
Le, Duc HaiUNSPECIFIEDhttps://orcid.org/0000-0001-7580-9566UNSPECIFIED
Oehl, MichaelUNSPECIFIEDhttps://orcid.org/0000-0002-0871-2286UNSPECIFIED
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:External HMI; Vulnerable Road Users; Human-Machine-Interaction
Event Title:63rd Conference of Experimental Psychologists TeaP@Home 2021
Event Location:Virtual
Event Type:national Conference
Event Dates:14.-16. März 2021
Organizer:Fachgruppe Allgemeine Psychologie der Deutsche Gesellschaft für Psychologie (DGPs)
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: Braunschweig
Institutes and Institutions:Institute of Transportation Systems
Deposited By: Lau, Merle
Deposited On:03 Mar 2021 12:30
Last Modified:25 Apr 2023 13:36

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