Who has to take part in the alcohol interlock program in QLD

You'll be an interlock driver if you're convicted of any of these, according to the Queensland Government:

• driving, or attempting to drive or be in charge of a vehicle, under the influence of alcohol
• driving, or attempting to drive or be in charge of a vehicle, with a reading of 0.10 or more
• failing to provide a blood or breath sample
• dangerous driving while affected by alcohol
• two or more drink driving offences within five years

There's one more that catches people. If you get a work licence for a mid range offence, meaning a reading of 0.10 or more, the interlock comes with it. Legal Aid Queensland is clear about that. Plenty of people fight hard for a work licence and then get blindsided by the interlock cost on top.

How long you're stuck with it

If your disqualification ends on or after 9 September 2021, the Queensland Government says you're on what's called the performance based program. The minimum is twelve months, made up of an eight month learning period and then a four month performance period.

The clock doesn't start when your disqualification ends. It starts once you've actually got a licence with the interlock condition on it and had a device fitted to a car. Drag your feet on either of those and you've just made the whole thing longer.

If your disqualification ended before September 2021, different rules may apply to you, so check your own position rather than assuming this is it.

The four month stretch can start again from scratch

This is the part worth knowing before you're in it.

According to the Queensland Government, during that final four month period the clock restarts every time the device detects alcohol, or every time you get locked out permanently because you missed a scheduled service. Not once. Every time.

So someone who treats the servicing dates casually, or who has a couple of drinks and tries the car just to see, can find themselves months further away from the finish line than they thought. Transport and Main Roads will let you know either that you're done or that you're starting the four months again.

To finish, the Queensland Government says you need to have done your twelve months, had your interlock data checked, and completed the repeat drink driving course if you've been told to.

If you decide not to bother

The Queensland Government's position is blunt. Don't take part, and you can't drive for five years from the end of your disqualification, or from the day you were issued a work licence.

Five years. That's why waiting it out is usually a worse plan than it sounds when you're annoyed about the cost.

Driving a car that doesn't have one fitted

If you're under an interlock condition and you drive a car without a device in it, that's a separate offence in its own right, not just a technical breach of a condition. It carries its own consequences and it's not something to risk on a short trip.

Getting out of it

Exemptions exist, but the grounds are narrow. The Queensland Government lists four:

• you live somewhere remote
• you live on an island
• you have a medical condition that stops you providing enough breath to work the device
• you or a family member would suffer severe hardship without one

The page says plainly that exemptions aren't granted just because of work, study or money problems. Which is awkward, because that's the reason most people want one.

You apply through the Transport and Main Roads portal, in person at a customer service centre, or by post. Medical grounds need a certificate on the right form. You can apply up to six weeks before your disqualification ends, once the program has started, or straight away if a court has given you a restricted licence.

If you get an exemption, carry the certificate with you at all times and show it to police if you're asked.

The cost, and help with it

You pay. Fitting, rental, servicing and removal.

There is financial assistance through the Queensland Government if you meet income and asset limits, hold a Queensland licence with the interlock condition, are a citizen or permanent resident, and haven't had the assistance in the past five years. If it's approved, the money goes straight to the interlock company rather than to you.

The income and asset thresholds change, so look them up on the Queensland Government page rather than trusting a figure you read somewhere else. This article is current as at August 2026 and the money side in particular is worth checking against the current page before you rely on it.

Where this fits into the bigger picture

The interlock is the tail end of a drink driving matter, but how long it runs is decided much earlier, at court. What you're convicted of, and what the magistrate is told about your circumstances, feeds into your disqualification and into whether a work licence is even available. Our page on drink driving covers that end of it, and our page on the alcohol interlock requirement covers this end.

Worth knowing too: the Queensland Government records that fines and penalties in Queensland went up by 3.5 per cent on 1 July 2026, so any dollar figure in an older article is already out of date.

If you've got a court date and you drive for a living

The interlock period is a lot easier to plan around when you know it's coming and roughly how long it will run. It's muc harder to sort out after the fact, when you've already been sentenced and the cost has landed.

If you've been charged with drink driving in Cairns, talk to us before your court date, not after it.