21 Dec Are You Going to Need an Interlock Device?
Arizona has a zero-tolerance policy when it comes to impaired driving. If you get pulled over and there are any traces of alcohol in your system, you can get charged with a DUI. And if you’re convicted, that means you can’t drive without passing a breath test first.
Does every DUI result in an interlock device?
Yes. In Arizona, a DUI conviction means driving with a breathalyzer installed. It doesn’t matter if it was a first offense or that nobody was harmed. Every DUI conviction means jail time, fines, temporary suspension of your driver’s license, and then installation of an interlock device.
When is an interlock device required?
If you’ve been convicted of a DUI, you will first have to wait until the suspension of your license ends. Then, you will be permitted to drive only if you have an interlock device and pass a breath test.
An interlock device is required for all:
- First-time offenders with a blood alcohol content of 0.08% or higher
- Repeat DUI offenders, regardless of blood alcohol content
- DUI offenders under the age of 21
How long does the interlock device need to be installed?
In most cases, you’ll have to use an interlock device for 12 months. For extreme or aggravated DUIs, it may be longer. And if you violate your sentence by driving a vehicle without an interlock device, tampering with the interlock device, or failing a breath test, the time may be extended.
However, you might only have to use it for 6 months if you get approved for a deferment. As long as you did not cause an accident and have completed the substance abuse classes, you can apply for a deferment through the Department of Motor Vehicles.
What if I refuse to take a breath test when pulled over?
If you refuse to take a breath test, you can get arrested and your license could be suspended for a year. In Arizona, when you apply for a driver’s license you are giving your “implied consent” to substance testing if you get pulled over.
You are not legally obligated to submit to a breath, blood, or urine test after an arrest. However, refusing to comply could mean harsher sentencing if you are convicted. It also means that you’ll have to drive with an interlock device if you want to get your license back.
Can you fight a DUI in court?
If you get pulled over for a DUI, it’s important to know your rights. You can refuse the preliminary breath test that the police use to provide cause for arrest. You have the right to remain silent, and not answer any questions that might incriminate you. You also have the right to a lawyer.
To fight a DUI charge in Arizona, you’ll need a strong defense attorney at your side. At Coolidge Law, we have been defending DUI cases for over 25 years. We’ll help you fight your case and get your license back. If you need a proven DUI lawyer, contact us to schedule a consultation today.
Photo by Vladyslav Tobolenko on Unsplash used with permission under the creative commons license for commercial use 11/26/25.