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

What are your obligations if police ask you to take a random breath test (RBT)?

The answer

  • You may refuse unless you have been in a crash
  • You can insist on a blood test instead
  • You may refuse if you have not been drinking
  • You must not refuse — police can stop and test you at any time Correct

Why that's the answer

You must not refuse an RBT. Police can stop you at any time and test your BAC, and can breath test any driver involved in a crash. Refusing carries penalties as severe as drink driving itself.

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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