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Young drivers don't see dangers of driving tired

17 December 2015

A study has found that driverrs are more likely to get behind the wheel drowsy than drunk, despite it being just as dangerous.

The research undertaken by QUT's Centre for Accident Research & Road Safety - Queensland (CARRS-Q) was presented at the Australasian Road Safety Conference on the Gold Coast in October of this year.

Road safety researcher Chris Watling said driving sleepy and driving drunk were two risky behaviours linked to a comparable increase in crash risk, yet drivers perceived the dangers of each as vastly different.

"Research shows a blood alcohol content (BAC) of 0.05 per cent has the same effect as being awake for 17 hours, and a BAC of 0.1 per cent is roughly 20 hours, but drivers don't consider the impairment to be the same," Mr Watling said.

"In Queensland 20 per cent of the state's fatal crashes were attributed to drink driving and an estimated 15 per cent to fatigued driving, although incidence rates of sleep-related crashes are often more difficult to pinpoint because of the absence of an objective test."

The study, which examined the perceptions of sleepy driving and drink driving of 114 young drivers (under 30) and 177 drivers over 30, found young drivers were more likely to drive sleepy than drunk and more accepting of enforcement practices for drink driving than they are for sleepy driving,"

"What this shows is that drivers, in particular young drivers, don't view equally the dangers of drink driving and sleepy driving despite the crash risks being similar," he said.

Mr Watling said sleepiness had been shown to significantly impair a person's cognitive and psychomotor abilities, which impact safety-critical tasks such as driving, attention, working memory and coordination.

He said younger drivers were also more likely to be impaired by sleepiness because of the natural developmental maturing of the body's sleep-wake systems in early adulthood.

"Given younger drivers are over-represented in crash statistics and more likely to be impaired by sleepiness, it is vital we look to increase their perception of the dangers of driving while sleepy," he said.

Employees should note the factors that can increase the risk of a driver being involved in a tiredness-related crash and should take these into into account when developing policies to prevent driver tiredness.
 
 

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