About the Victorian Alcohol Interlock Program

Getting an alcohol interlock installed in your vehicle and being relicensed with an alcohol interlock licence condition means you’re a participant in the Victorian Alcohol Interlock Program.

An alcohol interlock is an electronic breath testing device that prevents a vehicle from starting if it detects alcohol present. The alcohol interlock also requests breath tests during your trip. It records all breath tests and any attempts to drive with alcohol present on your breath. 

What's an alcohol interlock?

An alcohol interlock is an electronic breath testing device that prevents a vehicle from starting if it detects alcohol present. The alcohol interlock also requests breath tests during your trip. It records all breath tests and any attempts to drive with alcohol present on your breath. 

When do I need to install the interlock? 

An alcohol interlock must be installed before you get your licence back.

An Alcohol Interlock Installation Certificate [PDF 122 Kb] needs to be completed by you and the approved alcohol interlock supplier and will be issued as evidence that a Victorian approved interlock has been installed in a vehicle, and this certificate is required to get relicensed. 

 
Alcohol interlocks can be installed in most vehicles with an ignition including motorcycles. Go to How to install the alcohol interlock to learn more.
 
Only VicRoads approved alcohol interlocks can be used in the Victorian Alcohol Interlock Program. They must be installed by approved alcohol interlock suppliers or their service agents.

The minimum length of time you'll need an interlock depends on:

  • when your offence was committed
  • the type of offence you committed
  • your blood alcohol concentration (BAC) reading (if applicable)
  • if this was your first offence.

If you don't follow the rules of the program, you'll need to keep the interlock for longer. Your months using the interlock don't need to be in a row, but if you don't drive at all for six months or more, you'll need to start collecting interlock data all over again.

See our drink-driving penalties page to find out more about drink-driving offences, the penalties that apply and the minimum alcohol interlock period required for each type of offence.

Whenever you use the vehicle, the alcohol interlock will record actions such as: 

  • blowing into the interlock
  • starting the engine and 
  • turning off the engine. 

The data recorded by your interlock is downloaded at each regular alcohol interlock service and sent to VicRoads. It is used to make decisions about whether you've successfully completed the Program. 

The Alcohol Interlock Management System (AIMS) is an online portal where you can log in to monitor your interlock usage and track your own progress. Go to The Alcohol Interlock Management System to find out about how to register and login. 

Removal of your alcohol interlock ‘I’ licence condition isn’t automatic, you’ll need to apply for removal by applying online through AIMS or by contacting the VicRoads Alcohol Interlock Program team on 1300 723 790.

There are a number of rules that are used to decide whether your alcohol interlock condition can be removed. Once you’ve used the interlock for the required period of time and proved that you've separated drinking from driving, you can apply to have your interlock condition removed. 

To have your alcohol interlock condition removed, you must show that you have:

  • taken all breath tests that the alcohol interlock requests
  • no confirmed violations 
  • driven at least twice each month – your drive month is based on the monthly anniversary of when you had your interlock installed. 

You may also need to complete a pre-interlock removal Behaviour Change Program (BCP) depending on your offence.

For more information, see removing the alcohol interlock.

You can apply for a medical exemption from the Alcohol Interlock Program if:
  • you have a medical condition that prevents you from using an alcohol interlock and
  • you can provide evidence (a report from a medical specialist) that you can't use an alcohol interlock.

If you apply for a medical exemption, we'll also assess whether your health allows you to continue driving. To apply for a medical exemption, you'll need to complete the Interlock Exemption or Removal on Medical Grounds application form [PDF 210 Kb]

If you’ve got questions about the Victorian Alcohol Interlock Program of an alcohol interlock medical exemption, contact the Driver Relicensing Services Team on 1300 723 790 or email [email protected]

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