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

Why is combining alcohol with drugs or medicines especially dangerous when driving?

The answer

  • It only matters with illegal drugs
  • It is safe if several hours pass between them
  • The effects cancel each other out
  • The effects are unpredictable Correct

Why that's the answer

Mixing drugs with alcohol, or combining drugs — including prescription and over-the-counter medicines — produces unpredictable effects. Never drive if you have mixed drugs, or taken drugs while drinking.

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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