Pedestrians’ Understanding of a Fully Autonomous Vehicle’s Intent to Stop: A Learning Effect Over Time

This study explored pedestrians’ understanding of Fully Autonomous Vehicles (FAVs) intention to stop and what influences pedestrians’ decision to cross the road over time, i.e., learnability. Twenty participants saw fixed simulated urban road crossing scenes with a single FAV on the road as if they...

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Main Authors: Michal Hochman, Yisrael Parmet, Tal Oron-Gilad
Format: Article
Language:English
Published: Frontiers Media S.A. 2020-12-01
Series:Frontiers in Psychology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fpsyg.2020.585280/full
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author Michal Hochman
Yisrael Parmet
Tal Oron-Gilad
author_facet Michal Hochman
Yisrael Parmet
Tal Oron-Gilad
author_sort Michal Hochman
collection DOAJ
description This study explored pedestrians’ understanding of Fully Autonomous Vehicles (FAVs) intention to stop and what influences pedestrians’ decision to cross the road over time, i.e., learnability. Twenty participants saw fixed simulated urban road crossing scenes with a single FAV on the road as if they were pedestrians intending to cross. Scenes differed from one another in the FAV’s, distance from the crossing place, its physical size, and external Human-Machine Interfaces (e-HMI) message by background color (red/green), message type (status/advice), and presentation modality (text/symbol). Eye-tracking data and decision measurements were collected. Results revealed that pedestrians tend to look at the e-HMI before making their decision. However, they did not necessarily decide according to the e-HMIs’ color or message type. Moreover, when they complied with the e-HMI proposition, they tended to hesitate before making the decision. Overall, a learning effect over time was observed in all conditions regardless of e- HMI features and crossing context. Findings suggest that pedestrians’ decision making depends on a combination of the e-HMI implementation and the car distance. Moreover, since the learning curve exists in all conditions and has the same proportion, it is critical to design an interaction that would encourage higher probability of compatible decisions from the first phase. However, to extend all these findings, it is necessary to further examine dynamic situations.
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spelling doaj.art-9adf62663da94791997d2005f7fb5bb92022-12-21T23:35:03ZengFrontiers Media S.A.Frontiers in Psychology1664-10782020-12-011110.3389/fpsyg.2020.585280585280Pedestrians’ Understanding of a Fully Autonomous Vehicle’s Intent to Stop: A Learning Effect Over TimeMichal HochmanYisrael ParmetTal Oron-GiladThis study explored pedestrians’ understanding of Fully Autonomous Vehicles (FAVs) intention to stop and what influences pedestrians’ decision to cross the road over time, i.e., learnability. Twenty participants saw fixed simulated urban road crossing scenes with a single FAV on the road as if they were pedestrians intending to cross. Scenes differed from one another in the FAV’s, distance from the crossing place, its physical size, and external Human-Machine Interfaces (e-HMI) message by background color (red/green), message type (status/advice), and presentation modality (text/symbol). Eye-tracking data and decision measurements were collected. Results revealed that pedestrians tend to look at the e-HMI before making their decision. However, they did not necessarily decide according to the e-HMIs’ color or message type. Moreover, when they complied with the e-HMI proposition, they tended to hesitate before making the decision. Overall, a learning effect over time was observed in all conditions regardless of e- HMI features and crossing context. Findings suggest that pedestrians’ decision making depends on a combination of the e-HMI implementation and the car distance. Moreover, since the learning curve exists in all conditions and has the same proportion, it is critical to design an interaction that would encourage higher probability of compatible decisions from the first phase. However, to extend all these findings, it is necessary to further examine dynamic situations.https://www.frontiersin.org/articles/10.3389/fpsyg.2020.585280/fullfully autonomous vehicleexternal human-machine interfacespresentation modalityroad crossingeye movements
spellingShingle Michal Hochman
Yisrael Parmet
Tal Oron-Gilad
Pedestrians’ Understanding of a Fully Autonomous Vehicle’s Intent to Stop: A Learning Effect Over Time
Frontiers in Psychology
fully autonomous vehicle
external human-machine interfaces
presentation modality
road crossing
eye movements
title Pedestrians’ Understanding of a Fully Autonomous Vehicle’s Intent to Stop: A Learning Effect Over Time
title_full Pedestrians’ Understanding of a Fully Autonomous Vehicle’s Intent to Stop: A Learning Effect Over Time
title_fullStr Pedestrians’ Understanding of a Fully Autonomous Vehicle’s Intent to Stop: A Learning Effect Over Time
title_full_unstemmed Pedestrians’ Understanding of a Fully Autonomous Vehicle’s Intent to Stop: A Learning Effect Over Time
title_short Pedestrians’ Understanding of a Fully Autonomous Vehicle’s Intent to Stop: A Learning Effect Over Time
title_sort pedestrians understanding of a fully autonomous vehicle s intent to stop a learning effect over time
topic fully autonomous vehicle
external human-machine interfaces
presentation modality
road crossing
eye movements
url https://www.frontiersin.org/articles/10.3389/fpsyg.2020.585280/full
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AT yisraelparmet pedestriansunderstandingofafullyautonomousvehiclesintenttostopalearningeffectovertime
AT talorongilad pedestriansunderstandingofafullyautonomousvehiclesintenttostopalearningeffectovertime