Tennessee’s Ignition Interlock Device Laws

Tennessee-FlagIn the State of Tennessee, a driving under the influence (DUI) conviction may result in a court order to install an ignition interlock device (IID). The device must be installed, serviced, and removed by an authorized service provider. All costs associated with the use of the IID are the responsibility of the offender, although individuals who demonstrate to the court that the device presents a financial hardship may be given a hardship waiver. All installed IIDs must be serviced at least once every six (6) months. Offenders must submit to the court proof of installation and maintenance.

An IID may be installed during the period of license suspension or revocation. Usually, however, an IID is ordered for use after the suspension or revocation period is over and driving privileges have been reinstated. Use of an IID during suspension or revocation requires a restricted license.  Restricted licenses allow the offender to operate a vehicle for specific purposes and/or during specific times. An IID is usually ordered for six (6) months of use after the reinstatement of driving privileges. It is against the law to tamper with, circumvent, or otherwise violate the use of an IID.

DUI convictions in the State of Tennessee generally follow this penalty pattern:

  • 1st offense: fine, jail, license revocation for 1 year, IID
  • 2nd offense: fine, jail, license revocation for 2 years, IID, possible restricted license
  • 3rd offense: fine, jail, 3-10 year license revocation, IID, vehicle seizure, no restricted license
  • 4th and subsequent offenses: felony charge, jail, 5 year license revocation, IID