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http://dx.doi.org/10.7232/JKIIE.2011.37.1.030

Effect of Touch-key Sizes on Usability of Driver Information Systems and Driving Safety  

Kim, Hee-Hin (Department of Industrial and Management Engineering, POSTECH)
Kwon, Sung-Hyuk (Department of Industrial and Management Engineering, POSTECH)
Heo, Ji-Yoon (Department of Industrial and Management Engineering, POSTECH)
Chung, Min-K. (Department of Industrial and Management Engineering, POSTECH)
Publication Information
Journal of Korean Institute of Industrial Engineers / v.37, no.1, 2011 , pp. 30-40 More about this Journal
Abstract
In recent years, driver information systems (DIS's) became popular and the use of DIS's increased significantly. A majority of DIS's provides touch-screen interfaces because of intuitiveness of the interaction and the flexibility of interface design. In many cases, touch-screen interfaces are mainly manipulated by fingers. In this case, investigating the effect of touch-key sizes on usability is known to be one of the most important research issues, and lots of studies address the effect of touch-key size for mobile devices or kiosks. However, there is few study on DIS's. The importance of touch-key size study for DIS's should be emphasized because it is closely related to safety issues besides usability issues. In this study, we investigated the effect of touch-key sizes of DIS's while simulated driving (0, 50, and 100km/h) considering driving safety (lateral deviation, velocity deviation, total glance time, mean glance time, total time between glances, mean number of glances) and usability of DIS's (task completion time, error rate, subjective preference, NASA TLX) simultaneously. As a result, both of driving safety and usability of DIS's increased as driving speed decreased and touch-key size increased. However, there were no significant differences when touch-key size is larger than a certain level (in this study : 17.5mm).
Keywords
Touch-key Size; Driver Information System; Touch-screen; Target Pointing Task;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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