Alabama · DUI · Checked October 2026
Ignition Interlock Rules in Alabama
Ignition Interlock Rules in Alabama: What Are the Rules?
When Alabama requires an ignition interlock after a DUI.
- First offense
- 1 year if you refused testing, had a BAC of 0.15 or more, had a child under 14 in the vehicle, or someone else was injured; otherwise optional for 90 days to stay the suspension
- Repeat offenses
- 2 years (second), 3 years (third), 4 years (felony fourth or later)
First Offense in Alabama
1 year if you refused testing, had a BAC of 0.15 or more, had a child under 14 in the vehicle, or someone else was injured; otherwise optional for 90 days to stay the suspension
Repeat Offenses in Alabama
2 years (second), 3 years (third), 4 years (felony fourth or later)
How the Program Works in Alabama
Each interlock violation (four or more 0.02 readings in a month, tampering, or missed 30-day service) extends the requirement by 6 months. Not required if no certified provider is within 50 miles. Does not apply to CDL disqualifications. $200 court fee and up to $150 restricted license fee.
More on DUI Law in Alabama
See the full overview of DUI laws in Alabama and read about how ignition interlock programs work.
This page summarizes Alabama law from official sources, checked October 2026. It isn't legal advice; a lawyer licensed in Alabama can advise on your case.
Frequently Asked Questions
Is an Ignition Interlock Required for a First DUI in Alabama?
1 year if you refused testing, had a BAC of 0.15 or more, had a child under 14 in the vehicle, or someone else was injured; otherwise optional for 90 days to stay the suspension
Is an Interlock Required for Repeat Offenses?
2 years (second), 3 years (third), 4 years (felony fourth or later)