Overview of Alabama Interlock Laws

Alabama mandates ignition interlock devices for certain DUI convictions under Section 32-5A-191 and 32-5A-191.4 of the Alabama Code. These devices prevent a vehicle from starting unless the driver passes a breath alcohol test. The program is overseen by the Alabama Law Enforcement Agency (ALEA) and applies to most DUI offenders, with specific rules for reinstatement and compliance. [alea.gov], [law.justia.com]

Who Must Install an IID?

• First DUI Conviction

  • BAC < 0.15: IID for 90 days (voluntary option to avoid suspension).

  • BAC ≥ 0.15: IID for 1 year (mandatory). [alea.gov], [smartstartal.com]

• Second Conviction: IID for 2 years after serving 45 days suspension.

• Third Conviction: IID for 3 years after 60 days suspension.

• Fourth or Subsequent Conviction: IID for 4 years after 1-year suspension.

• Refusal of Chemical Test: Adds 1 extra year to IID term. [smartstartal.com]

Installation & Removal Rules

• IID must be installed by an ALEA-approved provider; remote calibration is prohibited.

• Regular calibration and maintenance are required every 30 days.

• Removal only after ALEA confirms completion of the mandated term and compliance. [law.justia.com], [jasoncneff.com]

License Reinstatement Requirements

To reinstate your license after DUI:

1. Serve mandatory suspension period.

2. Install IID and obtain proof of installation.

3. File SR-22 insurance.

4. Pay reinstatement and court fees.

5. Complete any court-ordered programs. [alabamacou...records.us], [roadguardi...erlock.com]

Penalties for Non-Compliance

• Driving a non-interlocked vehicle during the IID term is illegal.

• Violations include:

  • Four or more BAC readings ≥ 0.02% in one month.

  • Tampering or bypassing the device.

  • Missing monthly service appointments.

• Penalties may include extended IID term or additional fines. [jasoncneff.com]

Costs

• Offender pays installation fee (typically $75–$150) and monthly monitoring ($60–$100).

• Indigent programs may waive fees if court-approved. [smartstartal.com]

Upcoming Changes

A proposed bill (HB1) for 2026 would mandate IID for all first-time DUI offenders for at least six months, eliminating the voluntary option. [speakinout...lynews.net]

✅ Key Takeaways

• Alabama IID terms range from 90 days to 4 years, depending on offense severity.

• Compliance requires installation by approved providers, regular calibration, and adherence to ALEA rules.

• IID can help reduce suspension time and restore limited driving privileges.

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2025 Alabama Ignition Interlock Device (IID) Laws – Complete Guide After a DUI

Meta Description:
Learn everything about Alabama interlock laws in 2025: who needs an IID after a DUI, installation rules, costs, penalties, and upcoming changes.

What Are Alabama Interlock Laws?

Alabama requires certain DUI offenders to install an Ignition Interlock Device (IID) under Alabama Code §32-5A-191 and §32-5A-191.4. This device prevents a vehicle from starting if alcohol is detected on the driver’s breath. The program is managed by the Alabama Law Enforcement Agency (ALEA) and applies to most DUI convictions.

Who Must Install an IID in Alabama?

The IID requirement depends on your DUI offense and blood alcohol concentration (BAC):

• First DUI Conviction

  • BAC < 0.15: IID for 90 days (voluntary option to avoid suspension).

  • BAC ≥ 0.15: IID for 1 year (mandatory).

• Second Conviction: IID for 2 years after 45-day suspension.

• Third Conviction: IID for 3 years after 60-day suspension.

• Fourth or Subsequent Conviction: IID for 4 years after 1-year suspension.

• Refusal of Chemical Test: Adds 1 extra year to IID term.

How to Install and Remove an IID

• Must use an ALEA-approved provider.

• Monthly calibration and maintenance required.

• Removal only after ALEA confirms completion of the IID term and compliance.

License Reinstatement Requirements

To reinstate your license after DUI:

1. Serve mandatory suspension.

2. Install IID and provide proof.

3. File SR-22 insurance.

4. Pay reinstatement and court fees.

5. Complete any court-ordered programs.

Penalties for Non-Compliance

Violations include:

• Driving a non-interlocked vehicle.

• Four or more BAC readings ≥ 0.02% in one month.

• Tampering or missing service appointments.

Penalties may include extended IID term or additional fines.

Costs of IID in Alabama

• Installation: $75–$150.

• Monthly monitoring: $60–$100.

• Indigent programs may reduce costs if court-approved.

Upcoming Changes in 2026

Proposed HB1 would require all first-time DUI offenders to install an IID for at least six months, removing the voluntary option.

FAQs

Q: Can I drive any car without an IID?
No. Driving a non-interlocked vehicle during your IID term is illegal.

Q: Does Alabama offer financial assistance for IID costs?
Yes, indigent programs may apply if approved by the court.

Q: How long do I need an IID after a first DUI?
90 days (voluntary) or 1 year if BAC ≥ 0.15.

Key Takeaways

• Alabama IID terms range from 90 days to 4 years.

• Compliance requires approved installation and monthly service.

• IID can help restore limited driving privileges sooner.