Journal of Korean Institute of Industrial Engineers (대한산업공학회지)

Korean Institute of Industrial Engineers (대한산업공학회)
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Effect of Touch-key Sizes on Usability of Driver Information Systems and Driving Safety

터치키 크기가 운전자 정보 시스템의 사용성과 운전의 안전성에 미치는 영향 분석

  • 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)
  • 김희진 (포항공과대학교 산업경영공학과) ;
  • 권성혁 (포항공과대학교 산업경영공학과) ;
  • 허지윤 (포항공과대학교 산업경영공학과) ;
  • 정민근 (포항공과대학교 산업경영공학과)
  • Received : 2010.08.25
  • Accepted : 2011.01.05
  • Published : 2011.03.01
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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

References

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