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Alcohol interlock conditions

An alcohol interlock condition is a condition that outlines that you can only drive a vehicle that has an alcohol interlock device installed. The device measures and records the amount of alcohol on your breath. It prevents a vehicle from starting if alcohol is detected.

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Changes to and alcohol interlock requirements coming 1 December 2019.

Learn more about the changes to court order and alcohol interlock requirements coming from 1 December 2019 and how they may affect you.

See the VicRoads website for more information.

You may receive an alcohol interlock condition if you have been found guilty of:

  • a drink driving offence
  • a combined drink and drug driving offence
  • offences that were found to have occurred under the influence of alcohol or both alcohol and a drug.

See the VicRoads website for information about:

The below tables outline when an interlock condition must (mandatory) or may (discretionary) be imposed on your licence.

Drink driving offences

First offence

Offence Date of offence Condition Minimum
Blood Alcohol Concertation (BAC) below 0.15* On or after 1/1/2007 but before 1/10/2014 – if you were under 26yo or on “P” plates at time of offence Mandatory Six months
  On or after 1/1/2007 but before 1/10/2014 Discretionary Six months
  On or after 1/10/2014 Mandatory Six months
BAC 0.15 or above, drive under the influence and refuse offence On or after 11/10/2006 Mandatory  Six months


Second offence
 

Offence Date of offence Condition Minimum
BAC below 0.15 On or after 11/10/2006 Mandatory 12 months
BAC 0.15 or above, drive under the influence and refuse offence On or after 11/10/2006 Mandatory Four years


Third or subsequent offence
 

Offence Date of offence Condition Minimum
BAC – any level, drive under the influence, refuse offence On or after 11/10/2006 Mandatory Four years


Combined drink and drug driving offence
 

Offence number Date of offence Condition Minimum
First On or after 1/8/2015 Mandatory Six months
Second (BAC below 0.15) On or after 1/8/2015 Mandatory 12 months
Second (BAC 0.15 or above), third or more On or after 1/8/2015 Mandatory Four years


Other offences

First offence
 

Offence number Date of offence Condition Minimum
Serious motor vehicle offence* Before 1/10/2014 Discretionary Six months
  On or after 1/10/2014 Mandatory Six months
Police pursuit or theft (including attempted theft) of a motor vehicle  On or after 30/9/2013 Discretionary Six months
Any other offence On or after 30/9/2013 Discretionary Not set

*Manslaughter, negligently cause serious injury, exposing emergency worker to risk, culpable driving, dangerous driving causing death or serious injury – arising out of the driving of a motor vehicle. 


Second or subsequent offence
 

Offence number Date of offence Condition Minimum
Serious motor vehicle offence* On or after 11/10/2006 Mandatory Four years
Police pursuit or theft (including attempted theft) of a motor vehicle  On or after 30/9/2013 Mandatory Four years
Any other offence On or after 30/9/2013 Discretionary Not set

*Manslaughter, negligently cause serious injury, exposing emergency worker to risk, culpable driving, dangerous driving causing death or serious injury – arising out of the driving of a motor vehicle 

Last updated on 01 Oct 2019
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