Rhode Island's ignition interlock law (RIGL § 31-27-2.8) requires installation of an approved ignition interlock device on the vehicles of certain DUI offenders before driving privileges are restored. The device measures the driver's breath alcohol before allowing the engine to start - and intermittently while the vehicle is in motion. Refusing or tampering with the device is a separate violation that can extend the suspension and trigger further penalties.
Most defendants encounter the interlock requirement in one of three ways: a high-BAC first offense, any repeat offense, or chemical test refusal. The cost, duration, and removal process all depend on which trigger applies.
Rhode Island Ignition Interlock - When It Applies
Under RIGL § 31-27-2.8, the ignition interlock is mandatory in the following situations:
- First-offense DUI with BAC 0.15 or higher: Mandatory interlock for the duration of the suspension and a follow-on period after license reinstatement.
- Any second or subsequent DUI conviction: Mandatory interlock for an extended duration after license reinstatement, regardless of BAC.
- Chemical test refusal under § 31-27-2.1: Interlock may be ordered as a condition of any hardship driving privilege during the refusal suspension.
- DUI manslaughter under § 31-27-2.2: Mandatory interlock following any prison term and license reinstatement.
For a first offense in BAC tier 1 (0.08 to 0.10), the interlock is discretionary, not mandatory. A judge can order it as part of the sentence but is not required to.
Duration of the Interlock Requirement
The interlock period runs separately from the suspension period - it begins when driving privileges are restored, not at conviction. Typical durations:
- 1st offense, BAC 0.15+: 6 to 12 months post-reinstatement
- 2nd offense: 1 to 2 years post-reinstatement
- 3rd offense (felony): 2 years post-reinstatement
- Refusal cases: Variable, tied to the suspension period
The Department of Motor Vehicles will not reinstate the license until the interlock is installed and verified. For the full reinstatement walkthrough, see Rhode Island license reinstatement process.
How the Device Works
An ignition interlock is an in-vehicle breath alcohol analyzer wired to the ignition system. To start the car, the driver provides a breath sample. If the sample is below the lockout threshold (Rhode Island sets this at 0.025 BAC), the engine starts. Above the threshold, the engine does not start, and the failed reading is logged.
While the vehicle is in motion, the device prompts random "rolling" retests at intervals. A failed rolling retest does not stop the engine mid-drive (which would create a safety hazard) but is logged and triggers the warning lights and horn until the vehicle is pulled over and shut off.
Cost of the Interlock
All costs are paid by the offender. Typical pricing in Rhode Island:
- Installation: $75 to $150 one-time
- Monthly monitoring/calibration fee: $70 to $90 per month
- Removal: $50 to $100 one-time at end of period
Over a 12-month interlock period, the total out-of-pocket runs $1,000 to $1,400 on top of fines, court costs, and reinstatement fees. Indigent offenders may qualify for a state-administered cost reduction, but the program is limited.
Approved Devices and Vendors
Rhode Island maintains an approved-device list under Department of Motor Vehicles regulations. Only certified vendors may install, calibrate, and remove the device. Common approved vendors include Smart Start, Intoxalock, LifeSafer, and Draeger Interlock. The DMV publishes the current approved list.
Interlock Violations
Violations are tracked and reported automatically to the DMV. Common violations:
- Failed start attempt at or above 0.025 BAC
- Failed rolling retest
- Tampering - bypass attempt, mouthpiece blockage, removing or disconnecting the device
- Missed calibration appointment
- Driving a non-equipped vehicle
Each violation can extend the interlock period, trigger a hearing at the Rhode Island Traffic Tribunal, or result in a new criminal charge for circumventing the device.
Hardship Licenses and the Interlock
Rhode Island allows hardship driving privileges during the suspension period in some cases. When granted, the hardship license almost always carries an interlock condition for the duration. See Rhode Island hardship license for eligibility and process.
Frequently Asked Questions
Is ignition interlock mandatory for a first DUI in Rhode Island?
It is mandatory if the BAC was 0.15 or higher under § 31-27-2.8. For lower BAC tiers, the interlock is discretionary and may or may not be ordered by the sentencing judge.
How much does an ignition interlock cost in Rhode Island?
Roughly $75 to $150 to install, $70 to $90 per month to operate, and $50 to $100 to remove. Annual cost runs around $1,000 to $1,400.
How long do I need an ignition interlock after a Rhode Island DUI?
Six to twelve months after license reinstatement for a first offense at BAC 0.15+, one to two years for a second offense, and two years for a third offense (felony) under § 31-27-2.8.
Can I drive someone else's car with an interlock requirement?
No. The interlock requirement applies to every vehicle the offender drives. Driving any non-equipped vehicle while under interlock order is itself a violation.
What happens if I fail an interlock test?
The failed reading is logged and reported to the DMV. Multiple failures or tampering attempts can extend the interlock period, trigger a Traffic Tribunal hearing, or result in additional charges.
Defense and Next Steps
The interlock requirement is non-trivial - it lengthens the practical license restriction by months or years and adds substantial out-of-pocket cost. In many cases, the defense strategy at the plea stage focuses on minimizing or avoiding the interlock condition. If you are facing DUI charges in Rhode Island, contact The Law Office of Chad F. Bank for a confidential consultation. Available 24/7 at 401-573-2265.
For the full statutory framework, see Rhode Island DUI laws.