North Carolina

North Carolina Legislation

Year of last legislative change: Awaiting data
Year of last revision to administrative code: Awaiting data
Most challenging aspects associated with introducing and passing interlock legislation:
Most of the changes that come from the Governor’s Highway Safety Administration, interlock committee, and DWI Task force are well received. We have proposed a first offender law (regardless of BAC), but this has not been passed or introduced at this point.
Changes for program improvement being pursued: Awaiting data
Who is eligible for an interlock in your state according to legislation (Data provided by CIIM):
Repeat impaired drivers, High BAC (.10-.18) impaired drivers
Can impaired drivers 'wait out' their interlock requirement:
Is an interlock required on test refusal:

Program Authority

Type of program: Hybrid
Agency/agencies with authority over the interlock program:
Department of Motor Vehicles
Agency/agencies with authority over participant monitoring:
Department of Motor Vehicles
Agency/agencies with authority over sanctioning interlock program participants:
Department of Motor Vehicles
Agency/agencies with authority to approve devices:
Department of Motor Vehicles
Training available for judges, law enforcement, and lawyers:
There is none offered via the DMV. The Attorney General who represents the DMV has done some continuous legal education (CLEs).

Program Features

Hardship license available to first offenders: Yes
Hardship license available to repeat offenders: No
Hardship license (First offenders, Repeat offenders, All): First offenders
Lookback period: 7 years
Source of funding: Awaiting data
Indigent funding is available to participants: Yes
Qualification requirements for indigent funding: Based on affidavit re: household income criteria
Frequency of interlock device service: 30-60 days


Participation Rate: Awaiting data
Number of interlock program participants in 2019: >2,000
Indicator used to determine the number of participants in the interlock program (e.g., certificate of device installation, certificate of device removal):
System used by the NC DMV
Indicator(s) used in state as the best measure(s) of the eligible population of offenders for the interlock program to determine the program participation rate:
Number of licenses that are issued with the restriction
Penalties for non-compliance: Awaiting data

Program Length

Length of Hard Suspension

1st offenders: 12 months
2nd offenders: 48 months
3rd offenders: Permanent
4th and subsequent offenders: Permanent

Interlock Program Length

1st offenders: 12 months
2nd offenders: 36 months
3rd offenders: 84 months
4th and subsequent offenders: Awaiting data


Program length is extended for non-compliance: No
Length of extension for non-compliance: Awaiting data
Program length is reduced for compliance: No
Length of reduction for compliance: Awaiting data
Frequency of sanctions imposed for non-compliance: Never
Program exit requirements: Completed period of installation required


Treatment is required for the interlock program: Yes
Components applied to treatment: Yes

Data Collection & Management

Agency responsible for collecting data: Awaiting data
Overview of Data Management: Vendors submit reports with the number of installs and removals. Vendors communicate with the DMV electronically.
Barriers to data collection: Awaiting data
Vendors in State

Vendor Oversight

Number of Vendors in State: 6
Agency responsible for vendor oversight: Department of Motor Vehicles
Approval process for new vendors: Awaiting data
Vendor recertification: Awaiting data
Interlock technology features (Data provided by CIIM): None
Radius requirement for service centers: Yes
Radius requirement: 50-miles