North Carolina
G.S. 20-17.8 and
G.S. 20-179.3 define when a driver is required to have the ignition interlock restriction on a license after certain convictions or affidavits. (Ignition interlock is not required on mopeds.)
Connected to a vehicle's ignition system, an ignition interlock device requires an individual to breathe into the equipment, which prevents the vehicle from starting if the individual's breath alcohol concentration is outside the acceptable range.
Ignition interlock devices are installed at the expense of the driver.
The N.C. Division of Motor Vehicles can waive ignition interlock installations on additional vehicles for applicants who meet household income criteria and have submitted an
Affidavit of Indigence II with their written hearing request. The form is also available in
Spanish.
Ignition Interlock Providers
Continuous Alcohol Monitoring
In certain cases, NCDMV may grant the use of a continuous alcohol monitor device. Call (919) 715-7000 for more information.
| Carolina Monitoring Associates | (252) 702-5060 |
​Continuous Alcohol Monitoring LLC
| ​(800) 464-5917
|
| Offender Management Services | (803) 814-3216 |
| Rehabilitation Support Services | (866) 273-4223, ext. 601
|
| Reliant Management Group | (919) 754-9422 |
| Sandhills Monitoring LLC | (910) 984-1009 |
| Tarheel Monitoring | (910) 763-1490 |
| Tarheel Monitoring West | (704) 253-1054 |