North Carolina Ignition Interlock DWI Laws

North Carolina Interlock Process

North Carolina ignition interlock laws require that any driver convicted of driving while intoxicated (DWI) for the second time, and also drivers convicted for the first time with a blood alcohol concentration (BAC) of .15 or higher, must install an ignition interlock device, including an electronic log device, on every vehicle they own or which is registered to them.

How do I get an interlock license?

  • Obtain a DL-123 from your auto insurance company or agent. These forms are valid for 30 days, so wait until you are ready to request interlock driving privileges before you request one.

  • Obtain an alcohol assessment at an approved provider. The cost is $100. Locate services here.

  • Make an appointment to have your ignition interlock installed by calling Monitech, our local North Carolina team at 800-521-4246.

  • If you work non-standard hours, obtain a letter from your employer stating when you need to be at work.

  • Fill out an application for Interlock Limited Driving Privilege.

  • Take these documents to the clerk of court in the country where you were originally charged.

  • Pay $100. You will receive your limited driving privilege.

  • Take your copy of the privilege and your vehicle to a local DMV, which will verify that your interlock is installed.