Will I Need an Ignition Interlock Device After a Second DUI?

After a second DUI in Georgia, you’ll be dealing with mandatory jail time, a long license suspension, and thousands of dollars in fines. But one of the most misunderstood parts of the sentence is the ignition interlock device (IID). It doesn’t just sit in your car for a few months. It changes how you drive, what you pay, and how long it takes to get your full license back.

Here’s what to expect with an IID after a second DUI in Georgia and how to deal with it.

The IID Is Mandatory After a Second DUI Within 5 Years

Under O.C.G.A. § 40-5-64 and O.C.G.A. § 42-8-111, a second DUI conviction within 5 years triggers a mandatory 12-month ignition interlock requirement. This is not optional. You cannot get any form of driving permit after the hard suspension period without installing an IID.

The timeline works like this:

• Conviction date: Your 18-month license suspension begins
• First 120 days: Hard suspension with no driving privileges at all
• After 120 days: You become eligible for an IID limited driving permit
• 12 months of IID use: You must maintain the device for a minimum of 12 months with no violations
• After IID completion: You can apply for full license reinstatement at the end of the 18-month suspension period

That’s a minimum of 18 months from your conviction date before you’re eligible for a regular license again, assuming no IID violations or other delays.

What Is an Ignition Interlock Device and How Does It Work?

An IID is a breathalyzer wired into your vehicle’s ignition system. Before you can start the car, you must blow into the device. If any alcohol is detected above the programmed limit (typically 0.02% BAC), the vehicle will not start.

While driving, the IID also requires rolling retests: random prompts to blow into the device while the car is in motion. If you fail a rolling retest or refuse to provide a sample, the device logs the event, your horn may honk, and your lights may flash until you pull over and turn off the engine.

All IID data is recorded and reported to your probation officer. This includes:

• Every start attempt (pass and fail)
• Rolling retest results
• Any attempts to tamper with or bypass the device
• Missed service appointments

Your probation officer reviews this data regularly. A failed test or missed calibration appointment can result in a probation violation, which brings its own set of serious consequences, including possible jail time.

How Much Does the IID Cost?

The IID is entirely at your expense. The costs add up quickly:

• Installation fee: $100 to $200
• Monthly lease and monitoring fee: $70 to $100 per month
• Calibration fees: The device must be serviced (recalibrated) every 30 to 60 days, which may involve additional fees
• Removal fee: Typically $50 to $100 when the device is removed after the 12-month period

Total estimated cost for 12 months: $1,000 to $1,500 or more

These costs are on top of fines ($600 to $1,000), DUI school ($350+), clinical evaluation fees, community service, probation supervision fees ($40/month), and insurance increases (SR-22 filing typically adds $2,000 to $5,000 per year).

Eligibility Requirements for the IID Permit

Getting an IID permit after a second DUI isn’t automatic. You must meet specific conditions under O.C.G.A. § 42-8-111:

• 120 days must have elapsed from your conviction date
• You must be enrolled in clinical treatment from a provider approved by the Georgia Department of Behavioral Health and Developmental Disabilities, or be participating in a DUI court program (accountability court)
• You must complete the DUI Risk Reduction Program (DUI school)
• You must have the IID installed before applying to DDS. You cannot go to DDS first and then install the device.

What Can You Drive With the IID Permit?

The IID limited driving permit restricts where and when you can drive. Under O.C.G.A. § 40-5-64.1(e), the permit allows driving only for:

• Going to and from work or performing job duties
• Scheduled medical care or obtaining prescriptions
• Attending college or school where you’re enrolled
• Attending treatment or support group meetings
• Court-ordered programs (DUI school, counseling)
• Court appearances and probation appointments
• Monthly IID service appointments

You cannot drive out of the state of Georgia on an IID permit. It is only valid in Georgia.

Any driving outside these permitted purposes is a violation of the IID permit under O.C.G.A. § 40-5-64.1(i) and can result in misdemeanor charges.

What Happens if You Violate the IID Requirements?

Violations while on the IID can trigger severe consequences:

• Failed breath test on the device: Logged and reported to your probation officer. Multiple failures can result in a probation violation hearing.
• Missed calibration appointment: The device will lock you out after a set period without service. The missed appointment is reported.
• Tampering or circumvention: Under O.C.G.A. § 42-8-118, tampering with an IID, having someone else blow into it, or bypassing the device is a misdemeanor that carries additional criminal penalties.
• Driving without the IID: Driving any vehicle without an IID installed while your permit requires it is a criminal offense.

False positives can happen. Mouthwash, hand sanitizer, certain foods, and some medications can trigger the device. If you get a false positive, rinse your mouth with water, wait a few minutes, and retest. Document the circumstances in case you need to explain the result to your probation officer.

Can You Get an Exemption From the IID?

Under O.C.G.A. § 42-8-111(b), the court has discretion to exempt you from the IID requirement based on undue financial hardship. However, there’s a significant catch: if you receive a financial hardship exemption, you lose all driving privileges for one year. No limited permit, no IID permit, nothing.

For most people, the IID is cheaper than a year without driving. The exemption makes sense only in very limited circumstances, such as when you don’t own a vehicle and have no realistic need to drive.

Protect Your Driving Privileges After a Second DUI

An ignition interlock device after a second DUI is a hassle and an expense, but it’s also the only way to drive during your suspension period. Understanding the requirements, costs, and restrictions before you install the device helps you avoid violations that could extend your suspension or land you back in jail.

At J. Ryan Brown Law, we handle second DUI defense and license reinstatement in Newnan, Coweta County, and throughout Georgia. We’ll guide you through every step from the criminal case to getting back on the road.

Contact us today for a consultation.