동시과제가 운전 수행 능력에 미치는 영향 -차량 통제 및 동작신호 해석을 중심으로- = The Effects of Secondary Task on Driving Performance -Control of Vehicle and Analysis of Motion signal-

다국어 초록 (Multilingual Abstract)

The purpose of this study was to quantitatively evaluate the effects of the secondary task while simulated driving using the variable indicating control of vehicle and smoothness of motion. Fifteen healthy adults having 1～2years driving experience were participated. 9 markers were attached on the subjects` upper(shoulder, elbow, wrist) and lower(knee, ankle, toe) limbs and all subjects were instructed to keep the 30m distance with the front vehicle running at 80km/hr speed. Sending text message(STM) and searching navigation(SN) were selected as the secondary task. Experiment consisted of driving alone for 1 min and driving with secondary task for 1 min, and was defined driving and cognition blocks respectively. To indicate the effects of secondary task, coefficient of variation of distance between vehicles and lane keeping(APCV and MLCV) and jerk-cost function(JC) were analyzed. APCV was increased by 222.1% in SN block. MLCV was increased by 318.2% in STM and 308.4% in SN. JC were increased at the drivers` elbow, knee, ankle and toe, especially the total mean JC of lower limbs were increased by 218.2% in STM and 294.7% in SN. Conclusively, Performing secondary tasks while driving decreased the smoothness of motion with increased JC and disturbed the control of vehicle with increased APCV and MLCV.

참고문헌 (Reference)

1 박성수, "차량시뮬레이터 환경에서 운전 중 주의분산에 따른 생체신호 변화 연구" 대한인간공학회 29 (29): 55-59, 2010

2 최시환, "주행속도를 달리했을 때 운전 중 휴대 전화 사용이 운전 수행에 미치는 효과." 한국감성과학회 6 (6): 1-1, 2003

3 이정모, "인지심리학의 특성과 성과" 성원사

4 김재석, "돌발 상황에 대한 운전자 반응 연구" (9) : 3-26, 2004

5 Takafumi Asao, "The effect of physical workloads on driving performance" 2005

6 Hreljac, A., "Stride smoothness evaluation of runners and other athletes" 11 : 199-206, 2000

7 Viviani, P., "Minimum-Jerk, Two-Thirds Power Law, and Isochrony: Converging Approaches to Movement Planning" 21 : 32-53, 1995

8 Recarte, M. A., "Mental workload while driving: Effects on visual search, discrimination and decision making" 9 (9): 11-137, 2003

9 Wiegner, W., "Kinematic models and human elbow flexion movements: Quantitative analysis" 88 : 665-673, 1992

10 Brumby, D. P., "Focus on Driving: How Cognitive Constraints Shape the Adaptation of Strategy when Dialing while Driving" 1629-1638, 2009

11 Wester, A. E., "Event-related potentials and secondary task performance during simulated driving" 40 : 1-7, 2008

12 Sherwood, N., "Effects of cigarette smoking on performance in a simulated driving task" 32 : 161-165, 1995

13 Perry, R. J., "Attention and executive deficits in Alzheimer’s disease" 122 : 383-404, 1999

14 Meda, S. A., "Alcohol does effects on brain circuits during simulated driving: an fMRI study" 30 : 1257-1270, 2009

15 Thierry, B., "A theoretical and methodological framework for studying and modelling drivers’ mental representations" 47 : 1205-1221, 2009