Improving Usefulness of Automated Driving by Lowering Primary Task Interference through HMI Design

During conditionally automated driving (CAD), driving time can be used for non-driving-related tasks (NDRTs). To increase safety and comfort of an automated ride, upcoming automated manoeuvres such as lane changes or speed adaptations may be communicated to the driver. However, as the driver’s prima...

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Main Authors: Frederik Naujoks, Yannick Forster, Katharina Wiedemann, Alexandra Neukum
Format: Article
Language:English
Published: Wiley 2017-01-01
Series:Journal of Advanced Transportation
Online Access:http://dx.doi.org/10.1155/2017/6105087
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author Frederik Naujoks
Yannick Forster
Katharina Wiedemann
Alexandra Neukum
author_facet Frederik Naujoks
Yannick Forster
Katharina Wiedemann
Alexandra Neukum
author_sort Frederik Naujoks
collection DOAJ
description During conditionally automated driving (CAD), driving time can be used for non-driving-related tasks (NDRTs). To increase safety and comfort of an automated ride, upcoming automated manoeuvres such as lane changes or speed adaptations may be communicated to the driver. However, as the driver’s primary task consists of performing NDRTs, they might prefer to be informed in a nondistracting way. In this paper, the potential of using speech output to improve human-automation interaction is explored. A sample of 17 participants completed different situations which involved communication between the automation and the driver in a motion-based driving simulator. The Human-Machine Interface (HMI) of the automated driving system consisted of a visual-auditory HMI with either generic auditory feedback (i.e., standard information tones) or additional speech output. The drivers were asked to perform a common NDRT during the drive. Compared to generic auditory output, communicating upcoming automated manoeuvres additionally by speech led to a decrease in self-reported visual workload and decreased monitoring of the visual HMI. However, interruptions of the NDRT were not affected by additional speech output. Participants clearly favoured the HMI with additional speech-based output, demonstrating the potential of speech to enhance usefulness and acceptance of automated vehicles.
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spelling doaj-art-c2ba4c9d25bd4665b7e5ca02590d9bbc2025-08-20T03:23:15ZengWileyJournal of Advanced Transportation0197-67292042-31952017-01-01201710.1155/2017/61050876105087Improving Usefulness of Automated Driving by Lowering Primary Task Interference through HMI DesignFrederik Naujoks0Yannick Forster1Katharina Wiedemann2Alexandra Neukum3Center for Traffic Sciences (IZVW), University of Würzburg, Würzburg, GermanyWürzburg Institute for Traffic Sciences (WIVW), Veitshöchheim, GermanyWürzburg Institute for Traffic Sciences (WIVW), Veitshöchheim, GermanyCenter for Traffic Sciences (IZVW), University of Würzburg, Würzburg, GermanyDuring conditionally automated driving (CAD), driving time can be used for non-driving-related tasks (NDRTs). To increase safety and comfort of an automated ride, upcoming automated manoeuvres such as lane changes or speed adaptations may be communicated to the driver. However, as the driver’s primary task consists of performing NDRTs, they might prefer to be informed in a nondistracting way. In this paper, the potential of using speech output to improve human-automation interaction is explored. A sample of 17 participants completed different situations which involved communication between the automation and the driver in a motion-based driving simulator. The Human-Machine Interface (HMI) of the automated driving system consisted of a visual-auditory HMI with either generic auditory feedback (i.e., standard information tones) or additional speech output. The drivers were asked to perform a common NDRT during the drive. Compared to generic auditory output, communicating upcoming automated manoeuvres additionally by speech led to a decrease in self-reported visual workload and decreased monitoring of the visual HMI. However, interruptions of the NDRT were not affected by additional speech output. Participants clearly favoured the HMI with additional speech-based output, demonstrating the potential of speech to enhance usefulness and acceptance of automated vehicles.http://dx.doi.org/10.1155/2017/6105087
spellingShingle Frederik Naujoks
Yannick Forster
Katharina Wiedemann
Alexandra Neukum
Improving Usefulness of Automated Driving by Lowering Primary Task Interference through HMI Design
Journal of Advanced Transportation
title Improving Usefulness of Automated Driving by Lowering Primary Task Interference through HMI Design
title_full Improving Usefulness of Automated Driving by Lowering Primary Task Interference through HMI Design
title_fullStr Improving Usefulness of Automated Driving by Lowering Primary Task Interference through HMI Design
title_full_unstemmed Improving Usefulness of Automated Driving by Lowering Primary Task Interference through HMI Design
title_short Improving Usefulness of Automated Driving by Lowering Primary Task Interference through HMI Design
title_sort improving usefulness of automated driving by lowering primary task interference through hmi design
url http://dx.doi.org/10.1155/2017/6105087
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AT katharinawiedemann improvingusefulnessofautomateddrivingbyloweringprimarytaskinterferencethroughhmidesign
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