How to pass a breathalyzer test
If you’ve been convicted of a DUI-related offense or are under suspicion of drinking and driving, you’ll need to provide a breath sample. Learn how to do a breath test on an ignition interlock device, plus separate fact from fiction when it comes to beating a breathalyzer test.
When is a breath test required?
Breath tests are required for those suspected of drinking and driving. Law enforcement personnel utilize handheld breathalyzers for DUI prosecution.
If you have been convicted of a DUI-related offense, you might be required to submit a breath test to an ignition interlock device (IID) before starting your vehicle. If you’re on probation for an alcohol-related offense, you might be required to use an in-home breathalyzer.
Additionally, commercial breathalyzers provide a convenient, portable way to self-test your Breath Alcohol Concentration (BrAC).
What is an ignition interlock device?
An ignition interlock device is a breathalyzer that is installed in your vehicle to prevent drinking and driving. It is made up of a mouthpiece, a handheld unit and a cord that attaches to your vehicle’s ignition system. You are required to blow into the mouthpiece to test your Breath Alcohol Concentration (BrAC) before starting your car.
If your Breath Alcohol Concentration (BrAC) is below the limit set by your state, your vehicle will start. If your Breath Alcohol Concentration (BrAC) is above your state’s limit, your vehicle will not start until you submit a breath sample that no longer detects alcohol.
How does a breathalyzer work?
A breathalyzer is a wireless, handheld device that monitors a user’s Breath Alcohol Content. To use a portable breathalyzer, the user must blow into the device for a few seconds in a steady stream. The device will indicate when to start and stop but this usually lasts for about 5 seconds. Sensors within a portable breathalyzer will then measure the alcohol level of air in the lungs and supply a Breath Alcohol Content estimate.
Steps for completing an ignition interlock breath test:
Those with an ignition interlock device must pass a breath test before operating a vehicle. Follow these simple steps to perform a breath test on an Intoxalock ignition interlock device:
- 1. Press the button on the handheld unit
- 2. Wait until the LED displays “Blow”
- 3. Breathe into the breathalyzer
If you are required to take a retest on your car breathalyzer, the ignition interlock device will alert you with a loud beep and a message displayed on the LED screen. If alcohol is detected during a retest, the ignition interlock device will not turn off your vehicle while it is in motion but it will give a signal for you to stop your vehicle, you will need to pull over safely.