article_snippet.sent: Just three hours behind the wheel at night can make motorists drive as badly as if motorists were drunk, scientists claim.
article_snippet.sent: Driver tiredness after a few hours has the same effect as being over the drink-driving limit, a 2011 study revealed.
article_snippet.sent: Even two hours of motorway driving in the dark can affect performance
article_snippet.sent: It's estimated that one-fifth of all traffic accidents are due to sleepiness behind the wheel and one in three people admit to nodding off while driving at night.