Understanding Ignition Interlock
What is an ignition interlock device?
An ignition interlock device is a small breathalyzer installed in a vehicle to prevent driving under the influence of alcohol. You blow into it before starting the car, and if alcohol is detected, the engine won’t start. Many states require them after a DUI to allow limited driving while protecting public safety.
How does an ignition interlock device work?
An ignition interlock device works like a checkpoint before starting your car. It tests your breath for alcohol, and if it’s clear, the vehicle starts. Some programs also require rolling retests while you drive to make sure the driver remains sober.
What does ignition interlock mean on a driver’s license?
If your license says ‘ignition interlock,’ it means you can only drive vehicles equipped with an interlock device. This restriction is usually required after a DUI conviction and is lifted once you finish your program successfully.
What does an ignition interlock device look like?
Most ignition interlock devices are about the size of a cell phone or small remote. They include a mouthpiece for testing, a display screen, and wiring connected to your car’s ignition. They’re designed to be discreet and easy to use.
What is the ignition interlock program?
The ignition interlock program is a state-run requirement for some DUI cases. Drivers must use an interlock device for a set time, with rules that vary by state. Once all conditions are met, the program ends and the restriction is lifted.
Cost & Financial Questions
How much does an ignition interlock device cost?
The cost usually includes an installation fee of $125–$450 and a monthly fee of $60–$100 for monitoring and calibration. Most people pay about $70–$150 per month in total.
What additional costs are associated with ignition interlock use?
Extra costs can include missed appointment fees, violation fees, early removal charges, and license reinstatement fees. These vary by provider and state, so it’s best to review your agreement carefully.
How can I get the best price on an ignition interlock device?
You can save by comparing providers in your state, asking about financial assistance, and avoiding missed appointments. Choosing a reliable provider also helps prevent extra fees.
Legal Requirements & Compliance
Do you have to get an ignition interlock device installed?
Whether you need one depends on your state and case. Many states require interlocks after a DUI, and the details are in your DMV or court paperwork. If you’re unsure, check with your DMV or provider.
How long do I need an ignition interlock device?
Program lengths vary by state, from a few months to over a year. Some require violation-free time to count. Always review your paperwork to stay on track.
What states require ignition interlock devices?
Most states require ignition interlocks for some DUI cases. Some mandate them for all DUIs, others only for high BAC or repeat offenses. Rules change often, so confirm with your DMV.
Which states do not require ignition interlock?
A few states don’t automatically require interlocks, but judges can still order them. Check current law before assuming you’re exempt.
What is an ignition interlock violation?
Violations include failed tests, missed calibrations, or tampering. These can lead to program extensions, fines, or license penalties. Staying compliant avoids setbacks.
What happens if I don’t get an ignition interlock device?
Not installing a required device can lead to license suspension, fines, or extended penalties. Install with a certified provider to stay eligible to drive.
What happens if you fail an ignition interlock test?
A failed test means your car won’t start and the result is recorded. Multiple fails can extend your program or trigger lockouts. If it wasn’t alcohol, note it and call your provider.
Installation & Setup
Where can I get an ignition interlock device installed?
Interlocks must be installed at state-approved service centers. Check your DMV list or ask a certified provider.
Who installs ignition interlock devices?
Certified technicians install and calibrate the devices. The process usually takes under two hours.
Where are ignition interlock installation centers located?
Centers are in most cities and towns, often inside auto shops. Use your DMV site or provider directory to find one nearby.
How long does it take to install an ignition interlock device?
Most installations take 1–2 hours, depending on your vehicle. Booking ahead helps reduce wait time.
How to prepare a vehicle for ignition interlock installation?
Make sure your car runs properly, clear the dashboard area, and bring DMV paperwork. Plan for up to two hours and arrange a ride if needed.
Using the Device
How to use an ignition interlock device?
Turn on your car, follow the device prompts, and blow into the mouthpiece. If your sample is clean, the car starts. You may be asked for retests while driving.
Does an ignition interlock device damage your car?
No. Certified technicians install them safely, and once removed, your car returns to normal.
How often do ignition interlock devices need calibration?
Usually every 30–60 days, depending on your state’s rules. Missing appointments can cause violations or lockouts.
Where can I get my ignition interlock device calibrated?
Calibration is done at state-approved centers, often the same one where it was installed.
How do I report a malfunctioning ignition interlock device?
Call your provider right away. Don’t attempt repairs yourself, tampering can count as a violation.
What features should I look for in an ignition interlock device?
Look for state certification, ease of use, fast warm-up, and clear displays. Some states also require cameras or GPS.
Choosing a Device
What are the top-rated ignition interlock devices?
Top-rated ignition interlock devices are those certified by your state for accuracy and reliability. The truth is, most certified devices meet the same technical standards, so the bigger difference comes from the provider that installs and supports them. A device is only as good as the service behind it.
What is the best ignition interlock device?
The “best” ignition interlock device is one that’s approved in your state and comes with strong customer support. Since most devices use similar technology, the key question is which company will help you avoid violations, keep up with reporting, and finish your program on time.
Which ignition interlock device is best for preventing DUI?
Every state-approved device is designed to prevent DUI by locking the ignition if alcohol is detected. The real difference is in the monitoring and support system. To protect yourself, ask providers: Do they have clear policies for false positives? How do they handle missed calibrations? Will they guide you through what to do if you get a violation notice? The best safeguard is having a provider that cares about your success, not just the device.
Where can I find state-approved ignition interlock devices?
Your DMV or licensing agency lists approved devices and providers for your state. While all listed devices meet state standards, the experience varies by provider.
Removal & After the Program
How to remove an ignition interlock device?
Only a certified technician can remove it after DMV or court approval. Trying to remove it yourself counts as tampering.
Where can I find removal services for ignition interlock devices?
Removal is done at certified centers, often the same ones that handle installation and calibration.
What should I expect during the removal of an ignition interlock device?
A technician disconnects the device, restores wiring, and downloads final data. The process usually takes under an hour.
What happens after an ignition interlock device is removed?
Your provider submits a final report to the DMV. Once cleared, your license restriction is lifted and you regain normal driving privileges.
