Operating an ignition interlock device (IID) after a DUI in Alberta generally works like this:
1. Before starting the car
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Insert your key into the ignition, but before the engine starts, the IID will prompt you to provide a breath sample.
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Blow steadily into the mouthpiece until you hear a beep or see a message that the sample was accepted.
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If your blood alcohol concentration (BAC) is below the preset limit (usually 0.02%), the car will start.
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If your BAC is above the limit, the car will not start and the failed test will be recorded.
If you want to book a car with an interlock device for your driving test, please fill out the form
2. While driving
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The device may require random rolling retests while the vehicle is running.
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When prompted, pull over if needed (for safety) and provide another breath sample within the time allowed (usually 5 minutes).
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Failure to take a rolling retest, or failing it, will be recorded and may trigger penalties.
3. Maintenance and calibration
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You must take your car to an approved service center every 30–60 days for calibration and data download.
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All test results (passes, fails, missed tests) are reported to Alberta Transportation.
4. Tips for successful use
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Avoid using mouthwash or other alcohol-containing products before blowing.
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Give yourself extra time before trips in case the device prompts retests.
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Always comply with service appointments — missed ones can result in license suspension.
If you want, I can also give you the exact Alberta government guidelines and fees for the Ignition Interlock Program so you’ll know the full cost and rules.