Mandatory Interlock Program

The mandatory interlock program is a court ordered penalty for drivers who:

• Commit a mid range drink driving offence and higher; 
• Commit a second drink driving offence within five years; and
• Refuse to take a breath test. 

If you are ordered by the Court to participate in the program you will receive a period of driver licence disqualification and be required to have an alcohol interlock device installed in your vehicle for a minimum 12 months. This is in addition to any other penalty ordered by the Court.  

If a driver fails to participate in the interlock program, they may remain disqualified from driving for at

least five years from their date of conviction.

 

Interlocks are electronic breath testing devices linked to the ignition system of cars, motorcycles and heavy vehicles.

Drivers must provide a breath sample that the interlock analyses for the presence of alcohol. It prevents the vehicle

from starting if alcohol is detected. Randomly timed breath tests must also be passed while you drive. All breath test results, a photograph of the person providing the sample, and any attempts to tamper with the device are recorded by the interlock. This information is used to monitor attempts to drink and drive, and any breach of interlock licence conditions. All participants must have a zero blood alcohol concentration when driving. 

The participant is required to pay all costs of being involved in the installation, maintaining and removing interlock for every vehicle you will be driving in the future. There is also a program administration fee to Roads and Maritime when you apply for an interlock licence. Generally the costs are $2,200 per annually. 

There are limited situations where a court can make an interlock exemption order. The Court may only make an exemption order if the offender proves that they: a) do not have access to a car in which to install the device or b) has a medical condition diagnosed by a medical practitioner that prevents the offender from providing a breath sample to operate the device. There are no exemptions for financial grounds or remoteness. There are concession rates and severe financial hardship assistance available for eligible persons.