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Connecticut

Ignition interlock devices in Connecticut

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We have 178 certified installation centers on file in Connecticut, spread across 93 cities and 7 provider networks.

Centers
178
Cities
93
Providers
7
Monthly · national guide
$70
national guide — Connecticut publishes no figure
The rules

What Connecticut requires

Connecticut requires the device before it will restore your license at all — after failing or refusing a test, an OUI, vehicular manslaughter or vehicular assault. One detail costs people months: the DMV states plainly that the requirement starts the date your license is restored, not the date the device is fitted.

  • First offense: Required to reinstate after any alcohol-related suspension; the clock starts on the day your license is restored, not the day the device is fitted
  • Lockout threshold: Set by the Connecticut-approved vendor device; the car will not start if it detects alcohol, and rolling retests run at random while you drive
  • Program run by: Connecticut DMV

What the charge itself carries in Connecticut: when it becomes a felony, a second and a first offence — the fine, the jail exposure and how long the licence stays restricted.

Source: portal.ct.gov · checked 2026-08-23

Connecticut · 2020–2022

Why Connecticut asks for the device

Federal crash records are the backdrop to the rules on this page. Read the share with care though: it depends heavily on how often police obtain an alcohol test, and that varies enormously between states.

Fatal crashes with a drinking driver
308
of 904 in Connecticut
People killed in them
344
2020–2022
Drivers who got an alcohol test
47%
40% nationally

Source: NHTSA Fatality Analysis Reporting System, 2020–2022. Counts crashes where police recorded a drinking driver — narrower than the federal 0.08 BAC measure, so the real figure is higher. Why this number is easy to misread →

Cities

Certified centers by city in Connecticut

Every city below has at least one center on file. Counts are unique physical locations — where two providers share a garage, we count the garage once.

CityCentersProviders
Waterbury9Intoxalock, LifeSafer, Smart Start
Meriden6ADS Interlock, Intoxalock, LifeSafer, Low Cost Interlock, RoadGuard Interlock, Smart Start
Bridgeport5Intoxalock, LifeSafer, Low Cost Interlock, RoadGuard Interlock, Smart Start
Enfield5Alcolock USA, Intoxalock, LifeSafer, Smart Start
Hartford5ADS Interlock, Intoxalock, Smart Start
Manchester5ADS Interlock, Intoxalock, RoadGuard Interlock, Smart Start
Norwalk5ADS Interlock, Intoxalock, LifeSafer, Low Cost Interlock, RoadGuard Interlock, Smart Start
Norwich5ADS Interlock, Intoxalock, LifeSafer, Low Cost Interlock, Smart Start
Brookfield4Alcolock USA, Intoxalock, LifeSafer, RoadGuard Interlock
Danbury4Intoxalock, LifeSafer
New Britain4Intoxalock, LifeSafer, Low Cost Interlock
Torrington4Intoxalock, LifeSafer
Berlin3Intoxalock, Low Cost Interlock, Smart Start
Bristol3Intoxalock, Smart Start
Milford3ADS Interlock, Intoxalock, LifeSafer, Low Cost Interlock, RoadGuard Interlock, Smart Start
Newington3Intoxalock, LifeSafer, Smart Start
West Hartford3ADS Interlock, Alcolock USA, Intoxalock, LifeSafer, RoadGuard Interlock, Smart Start
Bethel2Intoxalock, Smart Start
Bloomfield2Intoxalock, LifeSafer
Dayville2Intoxalock, LifeSafer
East Hartford2Intoxalock
Fairfield2Intoxalock, Smart Start
Gales Ferry2Alcolock USA, Intoxalock
Glastonbury2Intoxalock, LifeSafer, Smart Start
Groton2Intoxalock, Smart Start
Guilford2Intoxalock, LifeSafer
Hamden2Intoxalock, LifeSafer, RoadGuard Interlock, Smart Start
Moosup2Intoxalock
Naugatuck2Intoxalock
New Haven2ADS Interlock, Intoxalock

Every other Connecticut city with a certified center

Showing the 60 cities with the most centers of 93 in Connecticut.

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Questions

Interlock questions in Connecticut

Is an ignition interlock mandatory in Connecticut?

Connecticut requires the device before it will restore your license at all — after failing or refusing a test, an OUI, vehicular manslaughter or vehicular assault. One detail costs people months: the DMV states plainly that the requirement starts the date your license is restored, not the date the device is fitted. As for how long: required to reinstate after any alcohol-related suspension; the clock starts on the day your license is restored, not the day the device is fitted.

How much is an interlock device per month in Connecticut?

Connecticut does not publish a price, so the honest answer is the national one: NHTSA puts installation at $70 to $90 and monitoring at about $70 a month, roughly $3 to $4 a day. A quote far above that is the provider's, not the state's.

What are the consequences of an interlock violation in Connecticut?

A recorded event is not automatically a violation, and that distinction decides most cases. Programs differ in what they count and how they count it: some add time per event, others ignore single events and act on a pattern, and several give you a written escape where a retest within five or ten minutes comes back clean. What is uniform is that the decision is made by Connecticut DMV from the vendor's report, not at the roadside. The mechanics, state by state and with the statute on each, are on our page about violations and lockouts.

How do I get the interlock restriction off my license in Connecticut?

Not at the workshop, and not on the date in your paperwork. The state releases you first and the device comes out last: you finish the term including anything added to it, sit a final data download at the service center, let Connecticut DMV review the record, take what it issues to a licensing office to lift the restriction, and only then book the removal. Most programs also require a clean window before any of that starts — 180 days in Washington, the last 30 in New Jersey, three months in Maryland.

What blood alcohol level will fail an interlock in Connecticut?

Connecticut does not fix the number in the statute itself — it is set by the certifying agency in the device standard, and in practice sits between 0.02% and 0.025% BAC. Either way it is far below the 0.08% driving limit, which is why one drink shortly before a test is enough to fail it: the device is testing whether you drank, not whether you are impaired.

Is there an alternative to an ignition interlock device in Connecticut?

Sometimes, and it is usually stricter rather than easier. The common substitute is continuous alcohol monitoring — a transdermal ankle bracelet that watches the person instead of the car, all day rather than at the ignition. North Carolina writes the trade directly into sentencing: 120 days of monitored abstinence can cut a 30-day minimum to ten, and 90 days can replace a seven-day term. The other alternative is not driving at all, which some states allow you to serve out instead, and which costs you the license for the whole period rather than the device.

Where can I get an ignition interlock device installed in Connecticut?

We index 178 certified installation points across 93 Connecticut cities, run by 7 approved providers, with the densest coverage in Waterbury, Meriden, Bridgeport. Install with a provider the state approves rather than the nearest pin on the map: time on an unapproved device does not count toward the term.

All states →Connecticut DUI law and penalties →What the device costs in ConnecticutDUI lawyers in Connecticut