Florida requires ignition interlock devices (IID) for certain DUI convictions and for drivers who want to drive during their suspension period via hardship license. IID and FR44 insurance are separate requirements — you need both to drive legally during or after a DUI suspension.

When Florida Requires IID

• First DUI with BAC 0.15%+ or minor in vehicle: mandatory IID for minimum 6 months upon reinstatement
• First DUI (standard): IID required for any hardship license during suspension; required for reinstatement in some cases
• Second DUI within 5 years: IID mandatory for minimum 2 years
• Second DUI after 5 years: IID mandatory for minimum 1 year
• Third DUI: IID mandatory for minimum 2 years
• Fourth or subsequent DUI: IID mandatory for minimum 5 years

How IID Works in Florida

• Device installed in your vehicle by a licensed provider
• Before starting the vehicle, you blow into the device — vehicle starts only if BAC is below threshold (typically 0.025%)
• Random rolling retests while driving — must test within 5 minutes of prompt or vehicle logs a violation
• Data downloaded monthly by the service provider and reported to the Florida DHSMV
• Tampering, circumventing, or failed tests are reported and can result in additional penalties

IID and FR44: Two Separate Requirements

FR44 insurance proves to the DHSMV that you carry the required liability coverage. IID proves to the DHSMV that your vehicle has a breath test interlock installed. Both are required for hardship licenses and often for full reinstatement after DUI. Having FR44 without IID (when IID is required) does not satisfy reinstatement requirements — and vice versa.

IID Cost in Florida

IID installation: $75-$150 one-time. Monthly monitoring: $60-$100/month. Total annual IID cost: approximately $800-$1,400. This is separate from and in addition to FR44 insurance premiums.

Frequently Asked Questions

Do I need IID for a first DUI in Florida?

It depends on BAC and whether you want to drive during your suspension. For a standard first DUI (BAC under 0.15%): IID is not mandatory for reinstatement but is required if you get a hardship license during suspension. For first DUI with BAC 0.15%+: IID is mandatory for at least 6 months after reinstatement.

Can I remove IID after FR44 is no longer required?

IID and FR44 have separate removal timelines. Your court order or DHSMV requirement specifies how long each is required. IID removal requires DHSMV authorization — you cannot simply uninstall it when FR44 ends. Confirm both requirements’ end dates separately.