Effects of Rest and Secondary Task on Simulated Truck-Driving Task Performance

Abstract

The study was designed to examine the effects of extra task stimulation and extra rest on performance and fatigue of haul truck drivers engaged in a simulated driving task. Sixty male subjects, randomly selected from the population of truck drivers in a large mining company, operated a driving simulator for a period of 7 h. A 2 x 3 experimental design was employed including two levels of rest conditions and three levels of secondary-task manipulations. The results show that performance and perceived fatigue were significantly higher when a secondary task involving voice communication was added to the basic driving task, but an added vigilance task had less effect. An extra 30-minute rest period in the middle of the experimental session significantly alleviated the reported experience of fatigue but did not affect performance. The results are discussed in terms of their relevance to actual industrial driving tasks.

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References

Bartlett, F. E. (1953). Psychological criteria of fatigue. In W. F. Floyd and A. T. Welford (Eds.), Symposium on fatigue. London: Lewis.

Brown, I. D. , and Poulton, E. C. (1961). Measuring the spare mental capacity of car drivers by a subsidiary task. Ergonomics, 4, 35–40.

Grandjean, E. (1968). Fatigue: Its physiological and psychological significance. Ergonomics, 11, 427–436.

Kashiwagi, S. (1971). Psychological rating of human fatigue. In Y. Hashimoto , K. Kogi , and E. Grandjean (Eds.), Methodology in human fatigue assessment. London: Taylor and Francis.

Locke, E. A. (1976). The nature and causes of job satisfaction. In M. Dunnette (Ed.), Handbook of industrial and organizational psychology (pp. 1297–1349). New York: Wiley.

McFarland, R. A. (1968). Injury-A major environmental problem. Paper presented at the 28th Congress on Occupational Health of the American Medical Association, New York.

Roberts, H. J. (1971). The causes, ecology and prevention of traffic accidents. Springfield, IL: Charles C. Thomas.

Saito, Y. , Kogi, K. , and Kashiwagi, S. (1970). Factors underlying subjective feelings of fatigue. Journal of Science and Labour, 46, 205–224.

Stave, A. M. (1977). The effects of cockpit environment on long term pilot performance. Human factors, 19, 503–514.

10.

Wiener, E. L. , Curry, R. E. , and Faustina, M. L. (1984). Vigilance and task load: In search of the inverted U. Human Factors, 26, 215–222.

11.

Wolf, G. (1967). Construct validation of measures of three kinds of experimental fatigue. Perceptual and Motor Skills, 24, 1067–1076.