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Title:

Characterization of Errors Encountered When Interacting with Auditory-Vocal In-Vehicle Interface during Highway Driving

Accession Number:

01628170

Record Type:

Component

Abstract:

The last decade has seen a marked increase in the number of information, communication, and entertainment tasks that can be initiated within the vehicle cabin. Drivers can now perform an enormous variety of such tasks through interfaces either integrated directly into the vehicle by the OEM or accessed via a portable device. To manage the complexity of these infotainment systems, manufacturers have turned to voice interfaces, since it is thought that they can minimize visual distraction and thus increase safety. A key to improving human interaction with auditory-vocal interfaces is to examine the circumstances in which people struggle with, or fail to properly utilize, the system as it is intended. This study examines driver interaction with an auditory-vocal interface during highway driving while using the MyLink system in a 2014 Chevrolet Impala. Fifty-two participants completed a series of alphanumeric street address entry and cancellation tasks. A review was conducted of all instances where an error occurred. Errors were then subcategorized based on recurring characteristics. The resulting assessment suggests that the majority of errors can be attributed to users’ failure to work within the system’s limited vocabulary or interaction “rhythm”, while a minority can be attributed to the system’s voice recognition. Further analyses show that errors are more common among older drivers, and that errors negatively impact task completion times. These results can contribute to understanding difficulties experienced between people and voice controlled interfaces, and inform voice system design, training, and implementation in the future.

Supplemental Notes:

This paper was sponsored by TRB committee AND20 Standing Committee on User Information Systems.

Monograph Accession #:

01618707

Report/Paper Numbers:

17-06073

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

McAnulty, Hale
Dobres, Jonathan
Mehler, Bruce
Reimer, Bryan

Pagination:

18p

Publication Date:

2017

Conference:

Transportation Research Board 96th Annual Meeting

Location: Washington DC, United States
Date: 2017-1-8 to 2017-1-12
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Photos; References (31) ; Tables

Subject Areas:

Highways; Safety and Human Factors

Source Data:

Transportation Research Board Annual Meeting 2017 Paper #17-06073

Files:

TRIS, TRB, ATRI

Created Date:

Dec 8 2016 12:27PM