The Role of Ignition Interlock Devices in Hawaii DUI Cases

Hawaii has strict DUI laws designed to reduce impaired driving and enhance road safety. One of the key measures used in DUI cases is the ignition interlock device (IID)—a breathalyzer-like system installed in a vehicle to prevent a driver from operating it while under the influence of alcohol.

If you have been arrested for DUI in Hawaii, understanding how ignition interlock devices work, their role in DUI penalties, and how they affect your driving privileges is essential.

Are you facing charges for a DUI? Call The Law Office of Kevin O'Grady, LLC today at (808) 521-3367 or contact us online for a FREE consultation with our experienced DUI defense attorney in Honolulu.

What Is an Ignition Interlock Device?

An ignition interlock device is a breath-testing unit installed in a vehicle that requires the driver to provide a breath sample before starting the engine. If the device detects a blood alcohol concentration (BAC) above the pre-set limit, the vehicle will not start.

In addition to the initial test, most IIDs require random rolling retests while driving to ensure continued sobriety. If alcohol is detected during a rolling retest, the device will record the violation and may trigger alarms or notifications.

When Is an Ignition Interlock Device Required in Hawaii?

Hawaii law mandates the installation of an IID for drivers convicted of DUI. The length of time the IID must be used depends on prior offenses and BAC level at the time of arrest.

Ignition Interlock Requirements by Offense Level

First DUI Offense: IID required for one year
Second DUI Offense (within 10 years): IID required for 18 months to two years
Third or Subsequent DUI Offense: IID required for two to five years
DUI with a BAC of 0.15% or Higher: IID required for an extended period, even for first-time offenders

Additionally, drivers who refuse a breath or blood test under Hawaii’s implied consent laws may also be required to install an IID.

How Does an Ignition Interlock Device Affect Driving Privileges?

If your license is suspended due to a DUI conviction, you may be eligible for a restricted driver’s license that allows you to drive—but only if you install an IID. This can help individuals maintain employment and daily responsibilities while serving their DUI penalties.

To qualify for an Ignition Interlock Permit (IIP) in Hawaii, you must:

Apply for the permit through the Hawaii Department of Transportation
Pay all required fees
Have an IID installed by a state-approved vendor
Provide proof of IID installation to the Department of Transportation

Failing to comply with IID requirements, such as tampering with the device or attempting to drive without it, can result in additional penalties, including extended suspension periods or new criminal charges.

Can an Ignition Interlock Device Help Reduce DUI Penalties?

In some cases, installing an IID early in the legal process may help demonstrate responsibility and commitment to sober driving. A skilled Honolulu DUI defense attorney may be able to use IID installation as part of a negotiation strategy to reduce penalties or shorten license suspension periods.

Contact Our DUI Lawyers

Ignition interlock devices play a critical role in Hawaii DUI cases, helping to prevent repeat offenses while allowing restricted driving privileges. If you are facing a DUI charge in Honolulu, working with an experienced DUI defense attorney can help you navigate IID requirements and explore legal strategies to minimize the impact on your life.

We have extensive experience defending DUI cases and guiding clients through ignition interlock laws. Contact us today for a free consultation to discuss your case and protect your driving rights.

Ignition Interlock FAQs

How much does an ignition interlock device cost in Hawaii?

The cost varies by provider but typically includes:

Installation fee: $75–$150
Monthly rental fee: $75–$100
Removal fee: $50–$100

Drivers are responsible for all costs associated with the device.

What happens if I fail a breath test on an IID?

If the device detects alcohol, your car will not start. The violation is recorded and reported to authorities, which may lead to additional penalties or an extended IID requirement.

Can someone else blow into my IID for me?

No. This is considered fraud and a criminal offense that could lead to severe legal consequences, including jail time.

Can I remove my ignition interlock device early?

Typically, no. You must fulfill the required IID period before removal. However, if you complete a state-approved DUI education or treatment program, your attorney may petition for a shorter IID duration.

Do ignition interlock devices detect drugs?

No. IIDs only measure alcohol levels in the breath. However, if you are suspected of drugged driving, law enforcement may request additional testing.