Individual Differences in Signal Perception for Takeover Request in Autonomous Driving

In the context of partial autonomy, where autonomous vehicles and humans share control of the vehicle, bringing out-of-the-loop drivers back into the loop is a significant challenge. While warning signal design guidelines are commonly used to provide alerts, few studies have examined each signal in...

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Main Authors: Okkeun Lee, Hyunmin Kang
Format: Article
Language:English
Published: MDPI AG 2023-07-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/13/14/8162
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author Okkeun Lee
Hyunmin Kang
author_facet Okkeun Lee
Hyunmin Kang
author_sort Okkeun Lee
collection DOAJ
description In the context of partial autonomy, where autonomous vehicles and humans share control of the vehicle, bringing out-of-the-loop drivers back into the loop is a significant challenge. While warning signal design guidelines are commonly used to provide alerts, few studies have examined each signal in depth with an emphasis on the autonomous environment. This study aims to fill this gap by investigating visual, auditory, and tactile stimuli and modifying their sub-attributes to explore variations related to age, gender, and other individual backgrounds. For this objective, the research examined the correlations between age, gender, and individual backgrounds with reaction times to TOR signals, investigating the effects of sub-attribute variations on participants’ responses and exploring the subjective evaluations of the signals. A driving simulator was utilized to create a realistic driving environment and measure participants’ reaction times in takeover request situations. Analysis of the data revealed correlations between age and reaction times for auditory and tactile signals, with interaction effects observed between age and sub-attribute intensity. Additionally, participants exhibited varying reaction time patterns in response to different sub-attribute intensities. By evaluating individual differences in perception based on modality characteristics, often overlooked in prior research, this study serves as a foundational contribution to future research in the field.
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spelling doaj.art-22f6f46c85c84da4966330db5f73ee322023-11-18T18:09:08ZengMDPI AGApplied Sciences2076-34172023-07-011314816210.3390/app13148162Individual Differences in Signal Perception for Takeover Request in Autonomous DrivingOkkeun Lee0Hyunmin Kang1Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, USAStanford Center at the Incheon Global Campus, Stanford University, Incheon 21985, Republic of KoreaIn the context of partial autonomy, where autonomous vehicles and humans share control of the vehicle, bringing out-of-the-loop drivers back into the loop is a significant challenge. While warning signal design guidelines are commonly used to provide alerts, few studies have examined each signal in depth with an emphasis on the autonomous environment. This study aims to fill this gap by investigating visual, auditory, and tactile stimuli and modifying their sub-attributes to explore variations related to age, gender, and other individual backgrounds. For this objective, the research examined the correlations between age, gender, and individual backgrounds with reaction times to TOR signals, investigating the effects of sub-attribute variations on participants’ responses and exploring the subjective evaluations of the signals. A driving simulator was utilized to create a realistic driving environment and measure participants’ reaction times in takeover request situations. Analysis of the data revealed correlations between age and reaction times for auditory and tactile signals, with interaction effects observed between age and sub-attribute intensity. Additionally, participants exhibited varying reaction time patterns in response to different sub-attribute intensities. By evaluating individual differences in perception based on modality characteristics, often overlooked in prior research, this study serves as a foundational contribution to future research in the field.https://www.mdpi.com/2076-3417/13/14/8162takeover requestsignal perceptionautonomous drivingindividual differencewarning signalmodality
spellingShingle Okkeun Lee
Hyunmin Kang
Individual Differences in Signal Perception for Takeover Request in Autonomous Driving
Applied Sciences
takeover request
signal perception
autonomous driving
individual difference
warning signal
modality
title Individual Differences in Signal Perception for Takeover Request in Autonomous Driving
title_full Individual Differences in Signal Perception for Takeover Request in Autonomous Driving
title_fullStr Individual Differences in Signal Perception for Takeover Request in Autonomous Driving
title_full_unstemmed Individual Differences in Signal Perception for Takeover Request in Autonomous Driving
title_short Individual Differences in Signal Perception for Takeover Request in Autonomous Driving
title_sort individual differences in signal perception for takeover request in autonomous driving
topic takeover request
signal perception
autonomous driving
individual difference
warning signal
modality
url https://www.mdpi.com/2076-3417/13/14/8162
work_keys_str_mv AT okkeunlee individualdifferencesinsignalperceptionfortakeoverrequestinautonomousdriving
AT hyunminkang individualdifferencesinsignalperceptionfortakeoverrequestinautonomousdriving