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Title:

Comparing Three Smart Device Setups for the Use of Speech Interface in Destination Search while Driving

Accession Number:

01550140

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

Accompanying with the popularity of personal smart devices, such as smart phone and tablet, more and more drivers start to use navigation applications on smart devices instead of traditional navigation systems while driving. However, the suitable operation mode of these devices in car was not well discussed yet. Targeted at a typical scenario of smart device use in car, searching destination via speech interface, this study compared three smart device setups with different screen sizes and positions in car by evaluating drivers’ vehicle control and secondary task performance in a simulated driving environment. The three setups include mounting iPad and iPhone on dashboard as head up displays and holding iPhone on hand. Result from 28 driver participants shows that operating iPhone on hand has the best performance with fewer speech recognition errors, shorter destination search time, and smaller speed variation, except for a very slightly larger lateral variation compared to mounting iPad on dashboard. Although mounting iPad on dashboard, which offers a bigger screen, has similar advantages as operating iPhone on hand in most of measurements, it caused much more speech recognition errors. In conclusion, holding devices on hand is ideal for speech-based destination search tasks; while mounting a bigger screen device in somewhere supports head-up display is also preferable if speech recognition accuracy is satisfied. These findings help current drivers find safe and convenient mode to use their smart devices in car, also support the transportation society to explore a better way of integrating smart devices into vehicles in future.

Supplemental Notes:

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

Monograph Accession #:

01550057

Report/Paper Numbers:

15-0469

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Wang, Ying
Zhu, Jiaqi
Zheng, Tingting
Gao, Fei
Guo, Xiang

Pagination:

11p

Publication Date:

2015

Conference:

Transportation Research Board 94th Annual Meeting

Location: Washington DC, United States
Date: 2015-1-11 to 2015-1-15
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References (13)

Subject Areas:

Highways; Safety and Human Factors; I83: Accidents and the Human Factor

Source Data:

Transportation Research Board Annual Meeting 2015 Paper #15-0469

Files:

TRIS, TRB, ATRI

Created Date:

Dec 30 2014 12:16PM