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Journal Article

Citation

Thiffault P, Bergeron J. Accid. Anal. Prev. 2003; 35(3): 381-391.

Affiliation

Laboratoire de Simulation de Conduite, Center de Recherche sur les Transports, Université de Montréal, C.P. 6128, Succursale Centre-Ville, Montréal, Que, Canada H3C-3J7. pierre.thiffault@mcgill.ca

Copyright

(Copyright © 2003, Elsevier Publishing)

DOI

unavailable

PMID

12643955

Abstract

Studies have shown that drowsiness and hypovigilance frequently occur during highway driving and that they may have serious implications in terms of accident causation. This paper focuses on the task induced factors that are involved in the development of these phenomena. A driving simulator study was conducted in order to evaluate the impact of the monotony of roadside visual stimulation using a steering wheel movement (SWM) analysis procedure. Fifty-six male subjects each drove during two different 40-min periods. In one case, roadside visual stimuli were essentially repetitive and monotonous, while in the other one, the environment contained disparate visual elements aiming to disrupt monotony without changing road geometry. Subject's driving performance was compared across these conditions in order to determine whether disruptions of monotony can have a positive effect and help alleviate driver fatigue. Results reveal an early time-on-task effect on driving performance for both driving periods and more frequent large SWM when driving in the more monotonous road environment, which implies greater fatigue and vigilance decrements. Implications in terms of environmental countermeasures for driver fatigue are discussed.

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