Driver Fatigue

Psychological fatigue is defined as a subjectively experienced disinclination to continue performing the task at hand. It generally impairs human efficiency when individuals continue working after they have become aware of their fatigue. It does not depend on energy expenditure and. cannot be measur...

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Bibliographic Details
Published in:Human factors 1994-06, Vol.36 (2), p.298-314
Main Author: Brown, Ivan D.
Format: Article
Language:English
Subjects:
Accidents, Traffic - prevention & control
Automobile Driving
Circadian Rhythm - physiology
Driver fatigue
Driving
Driving ability
Energy expenditure
Energy measurement
Fatigue
Fatigue - etiology
Humans
Occupational Diseases - etiology
Reviews
Sleep
Sleep - physiology
Stress, Psychological - etiology
Traffic accidents & safety
Work Schedule Tolerance
Working hours
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Summary:Psychological fatigue is defined as a subjectively experienced disinclination to continue performing the task at hand. It generally impairs human efficiency when individuals continue working after they have become aware of their fatigue. It does not depend on energy expenditure and. cannot be measured simply in terms of performance impairment. The interacting causal contributions to fatigue are the length of continuous work spells and daily duty periods, time available for rest and continuous sleep, and the arrangement of duty, rest, and sleep periods within each 24-h cycle. Empirical evidence for the separate and combined effects of these factors on fatigue, performance decrement, and accident risk are briefly reviewed, and the implications of these findings for driving and road safety are considered, with particular reference to the professional driver. This study shows that fatigue is insufficiently recognized and reported as a cause of road accidents and that its effects stem largely from prolonged and irregular working hours, rather than simply from time spent at the wheel.
ISSN:0018-7208
1547-8181
DOI:10.1177/001872089403600210