New South Wales · Driver Knowledge Test (DKT) · Road safety

Being awake for about 17 hours has a similar effect on your driving as what blood alcohol concentration?

The answer

  • 0.02
  • 0.05 Correct
  • 0.10
  • It has no measurable effect

Why that's the answer

Research shows being awake for about 17 hours affects your driving much as a BAC of 0.05 does. Driver fatigue can be as dangerous as drink driving.

Where this rule comes from

Take the full New South Wales practice test (153 questions)

More NSW DKT questions

Same topic first — road safety trips up more learners than any single rule.

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