Alcohol dramatically increases the effects of driver fatigue, even in small amounts well under the legal limit.
That's the blunt view from Professor Jim Horne of the Sleep Research Laboratory at Loughborough University in Britain.
He told a conference on 'Road Safety at Work' that even a blood alcohol level of one-eighth of the legal limit triples the likelihood of a crash during the driver fatigue 'dangerous' times of early morning or mid-afternoon.
He also said that younger drivers are more likely to crash in the early morning due to driver fatigue, while the danger time for older people is in the afternoon.
He said humans were 'designed' to sleep twice a day, at night and in the afternoon.
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