If you face a DUI charge and are convicted, one of the things you could end up having to use is an ignition interlock device (IID). This device prevents you from driving if you have a blood alcohol concentration (BAC) that is over .08 percent. Every time you get into your vehicle, you'll need to submit a breath test. Additionally, you may need to give another sample after you've been driving for a few minutes.
In the case that you fail a breath test, your car won't start. The system may have a temporary lock-out feature. If it does, then you may have to wait a certain period of time before you can blow into the machine a second time. Once you pass the test, your vehicle will turn on. In some instances, failing a test could result in the ignition interlock device going into a service lockout. If that happens, the machine will require maintenance before you can use your vehicle again.
Remember that these IIDs do require rolling retests. These tests take place while you're driving. The IID does give you time to pull over if you are uncomfortable taking the test while you drive. Take the test as soon as possible, because it's there to guarantee that your BAC is still low enough for you to drive safely.
Ignition interlock devices are there for your safety, but they can also be a hassle. It's important to fight any allegations of drug or alcohol abuse early on, so you can avoid having to use one of these devices in your vehicle. Our website has more on the steps you can take to protect yourself.