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Ignition interlock device

If your license was suspended for a DUI offense, the court may require you to get an ignition interlock device to prevent a vehicle from starting if your BAC exceeds 0.05%.

Ignition interlock device requirements
  • First DUI offense: Installation of interlock device for six months to one year upon restoration (judge's discretion); BAC 0.15% or greater requires mandatory installation of ignition interlock device during license suspension and for 6 months to 1 year following restoration
  • Second DUI offense: Mandatory installation of interlock device during license suspension and for 1 to 3 years following restoration
  • Third DUI offense: Mandatory installation of interlock device during license suspension and for 1 to 3 years following restoration
If the court sentences you to get an interlock device, you will receive a notice of suspension from MVC with instructions on how to obtain the device. IMPORTANT NOTE: Failure to have an ignition interlock installed when ordered by a judge could result in an additional one year driving privilege suspension.

Approved list of ignition interlock manufacturers
Ignition interlock manufacturers have installation locations throughout New Jersey. When selecting an ignition interlock provider, consider the installation and monitoring fees and installation center site convenience.
Company Contact/Website

1A Smart Start, Inc.
4950 Plaza Drive
Irving,TX 75063

(800) 880-3394
www.smartstartinc.com

Alcohol Detection Systems
1718 Belmont Avenue Suite E
Baltimore, MD 21244

1-888-STOP-DUI (888-786-7384)
www.statewideinterlock.com

Best Labs
7301 West Blvd Suite A1
Boardman, OH 44512
(800) 219-9936
www.sensolockamerica.com
Draeger Safety Diagnostics
4040 W Royal Lane Suite 136
Irving, TX 75063
(856) 753- 9700
(800) 970-1002
www.interlockdevice.com
Guardian Interlock Systems
228 Church St.
Marietta, GA 30060
(800) 499-0994
www.guardianinterlock.com
Intoxalock
10520 Hickman Road Ste F
Des Moines ,IA 50325
(877) 777-5020
www.intoxalock.com
LifeSafer
4290 Glendale Milford Road
Cincinnati, OH 45242-3704
(800) 475-7151
www.LifeSafer.com

FAQ's- Frequently Asked Questions
Download the most frequently asked questions [pdf] about ignition interlock devices.