Alcohol and drugs limits

You need to be alert and actively engaged when riding. Alcohol and drugs, including some drugs given to you by a doctor, can seriously affect your riding. They can slow your reaction times and affect your senses.

You risk causing death and serious injury to yourself and other people if you ride under the influence of alcohol or drugs.

Legal alcohol limits for riding

The law says you must not ride if the amount of alcohol in your blood or breath exceeds certain age-related limits. 

Under 20

There's a zero alcohol limit if you're under 20. That means if you drive after consuming even one drink you can be charged with drink-driving.

  • If you have an alcohol level of less than 150 micrograms per litre of breath, or less than 30 milligrams per 100 millilitres of blood, you could be fined and given 50 demerit points.
  • If your alcohol level is higher, you could be disqualified from driving, given 50 demerit points and either fined or imprisoned.

20 or over

You must not drive if you have more than 250 micrograms of alcohol per litre of breath, or more than 50 milligrams of alcohol per 100 millilitres of blood.

  • If you have an alcohol level between 251 and 400 micrograms per litre of breath, or between 51 and 80 milligrams per 100 millilitres of blood, you could be fined and given 50 demerit points.
  • If your alcohol level is higher, you could be disqualified from driving and either fined or imprisoned.

It's hard to say how many alcoholic drinks you can have before you reach these limits. It depends on many things, including:

  • your gender
  • your size
  • how much food you've eaten.

Because even small amounts of alcohol can affect you, the best advice is: if you drink at all, don’t ride.

Drugs and riding

The law also says you must not ride if you have taken any type of drug that may affect your riding ability. If you're prescribed drugs by a doctor, always ask if they'll have any effect on your riding. There are also legal limits for riding with certain drugs in your system, including some prescription medications and illegal drugs.

Testing for alcohol and drugs

You can be stopped by the police and tested at any time for alcohol and drugs. The police can use the following tests to see if you have been drinking or taking drugs.

Passive breath test

The police officer will ask you to talk into a hand-held device in front of your mouth. This will show if you have recently drunk any alcohol. If any alcohol is detected, a breath screening test will be required.

Breath screening test

The police officer will give you a small electronic device, and ask you to blow into it. If your alcohol level is high, you'll be asked to take an evidential breath test or have a blood test.

Evidential breath test

This is an electronic device you blow into, which gives a reading that can be used in court as evidence of your breath–alcohol concentration.

Blood test

If you have a blood test, a medical doctor or other approved person will take a sample of your blood to be tested for alcohol or drugs.

Compulsory impairment test

This includes an eye assessment, a walk and turn, and a one-leg stand assessment.

If you fail, you may be forbidden to ride and required to have a blood test.

Saliva based roadside test

The Government is also planning to introduce random saliva-based roadside testing for driving under the influence of drugs.

Offences and penalties

If you’re convicted in court for riding under the influence of alcohol or drugs, you could be given demerit points, fined, disqualified from riding and/or imprisoned.

Alcohol and drug limits