Alcohol interlock in NSW

What is an alcohol interlock device in NSW?

An alcohol interlock is an electronic breath-testing device connected to a vehicle’s ignition. Before the vehicle can start, the driver must provide a breath sample. The device may also require random breath samples during a journey, and a camera records the person providing the sample. The NSW Alcohol Interlock Program applies to some people convicted of serious or repeat drink-driving offences.

The device is intended to prevent a vehicle from starting when the sample indicates alcohol. A zero-alcohol limit applies while driving under an interlock licence, and driving a vehicle without the required interlock is illegal. These are general descriptions only. The applicable offence, order, licence condition and period depend on the current law and the particular conviction.

When can the NSW program apply?

NSW Government information identifies mid-range, high-range, repeat and other serious drink-driving convictions as offences that may require participation in the program unless an exemption order is made. The court must make either an interlock order or an interlock exemption order after conviction of a mandatory interlock offence. The exact disqualification and interlock periods are offence-specific and can also depend on prior relevant convictions and the offence date.

It is not reliable to apply a generic period from an online summary to every matter. Before publication or reliance, the current NSW Government table, the Road Transport Act 2013 (NSW), relevant regulations and current administrative instructions should be checked. Historical amendment Acts and repealed versions are not current sources for describing today’s program.

How the process generally works

1. Court order: Following conviction, the court makes an interlock order or considers an exemption order under the applicable statutory framework.
2. Disqualification: An initial disqualification period may apply before the person can proceed to the next stage. The length must be checked against the current offence classification and record.
3. Eligibility and documents: Transport for NSW requires eligibility confirmation and may require completion of testing steps, medical documentation and installation documentation.
4. Installation: An accredited provider must install the device before an interlock licence can be issued.
5. Interlock licence: The driver must comply with the zero-alcohol condition and the device’s operating requirements.
6. Servicing and completion: The device must be serviced regularly during participation. Current service intervals, providers, forms and completion requirements should be confirmed with NSW Government information.

This sequence is a general guide, not a checklist that guarantees eligibility or licence restoration. Operational requirements can be updated.

Interlock orders and exemption orders

An interlock order requires participation in the program in accordance with the court order and current licensing requirements. An exemption order is a separate legal pathway and is described by NSW Government as available only in exceptional circumstances. An exemption is not a universal defence to the drink-driving charge and does not automatically remove all consequences.

NSW Government guidance identifies lack of access to a vehicle for installation and a medical condition preventing use of the device as grounds that may support an exemption application. Living in a regional or remote area is not, by itself, a basis for exemption. Whether an exemption is available or appropriate depends on the governing law, evidence and the court’s decision.

An exemption order does not preserve ordinary driving rights. NSW Government states that the licence is cancelled, the person is disqualified, the Sober Driver Program must be completed at the person’s expense, and a new unrestricted licence can only be sought after the disqualification period. These consequences must be checked against current legislation and government instructions.

What if the program is not entered or completed?

NSW Government states that a person who receives an interlock order and does not enter the program or does not complete its requirements faces a five-year or at least five-year disqualification consequence, subject to the governing legislation and current administrative information. This should not be read as a prediction for an individual matter. The result can depend on the order, offence, prior record, compliance history and applicable law.

Before making decisions about an interlock, a person may need to address the offence classification, relevant conviction history, offence date, access to a suitable vehicle, medical ability to use the device, compliance history and required documents. These are issues to discuss with a lawyer or the relevant court or licensing authority, not assumptions that an exemption or different outcome will follow.

Neutral preparation checklist

• Record the exact charge, conviction date, offence date and any prior relevant convictions.
• Keep the court order, disqualification notice, licence correspondence and any interlock or exemption forms.
• Check whether the current offence classification appears in the NSW Government interlock information and legislation.
• Identify whether a vehicle is available for installation and whether an accredited provider is required.
• Gather current medical documents if a medical condition affects the ability to use the device.
• Confirm current eligibility, testing, servicing, fees and completion requirements before relying on an online guide.

Frequently asked questions