Module 16: Alcohol, drugs, fatigue and distraction
Alcohol and drug limits
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What you will learn
State the legal alcohol limits and why impaired driving is dangerous.
- Zero limit under 20
- Adult limits
- Drugs and medicines
Under 20: zero alcohol
LawIf you are under 20, the legal limit is zero. You must not drive with any alcohol in your breath or blood.
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View official source (opens in a new tab)20 and over
LawIf you are 20 or over, the legal limits are 250 micrograms of alcohol per litre of breath and 50 milligrams of alcohol per 100 millilitres of blood.
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View official source (opens in a new tab)Drugs and medicines
LawIt is illegal to drive while impaired by drugs, including some prescription and over-the-counter medicines. Read labels and ask a pharmacist or doctor if you are unsure.
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View official source (opens in a new tab)Knowledge check
A few quick questions – no timer, no pressure.
What is the legal alcohol limit for a driver under 20?
Summary
- Under 20: zero alcohol.
- 20+: 250 mcg/L breath, 50 mg/100 mL blood.
- Don't drive impaired by drugs or medicines.
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How do you feel about this topic?
- Official sourceView official source: Land Transport Act 1998 (opens in a new tab)Parliamentary Counsel Office (NZ Legislation)
- Official sourceView official source: Road Code – Alcohol and drug limits (opens in a new tab)NZ Transport Agency Waka Kotahi – About limits