What is an Ignition Interlock Device?

By understanding the potential penalties of a DUI conviction, you gain a better understanding of why obtaining an experienced DUI lawyer in Tucson is necessary to protect your rights. A potential penalty you face with a DUI conviction is having an ignition interlock device (IID) installed on your car. You must pay a certified company to install the device, which is about the size of a cell phone and is mounted onto the dashboard. The device is a small Breathalyzer that connects to the ignition and requires you to blow into it. If the IID detects alcohol, the ignition does not start the car. If it does not detect alcohol, the car starts and the IID randomly and periodically requires the driver to blow into it and provide breath samples.

If a driver fails to provide a breath sample or the sample tests positive for alcohol, the device records the information and warns the driver that an alarm is going off. The alarm continues until the driver turns off the ignition or provides a clean breath sample. The Arizona Department of Transportation often issues replacement licenses after revoking or suspending a driver's license — and these replacement licenses contain the notation "Ignition Interlock." Law enforcement officers look for the notation when stopping drivers they suspect of DUI or pull over for other reasons.

There are many strategies that an experienced Tucson DUI attorney can use to defend against a DUI charge. At Nesci & St. Louis, PLLC, our attorneys are board-certified in criminal law and DUI defense, and they have extensive training in field sobriety tests and Breathalyzer administration.

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