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KMID : 0389519940010010068
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Sleep Medicine.Psychophysiology
1994 Volume.1 No. 1 p.68 ~ p.75
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The Effects of Circadian Rhythm in Subjective Alertness on the Occurrence of Traffic Accidents
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Yu Bum-Hee
Cho Doo-Young
Jeong Do-Un
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Abstract
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In order to examine the effects of circadian rhythm in subjective alertness on the occurrence of traffic accidents, the authors investigated the occurrence rate of traffic accidents adjusted to traffic volume in Seoul and the relative rate of fatal accidents versus total traffic accidents in Korea at different times of day in 1991. We analyzed these data in relation with the circadian rhythm in subjective alertness. The results were as follows. Both the occurrence rate of traffic accidents adjusted to traffic volume and the relative rate of fatal accidents versus total traffic accidents were the highest at 3-4 a.m., known as the time period of the lowest subjective alertness. They were negatively correlated with subjective alertness (p<0.05, p<0.001). In conclusion, it is suggested that the circadian rhythm of subjective alertness should have a significant effect on the occurrence of traffic accidents despite many confounding factors such as driving environments.
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KEYWORD
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Traffic accidents, Subjective alertness, Circadian rhythm
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