Kentucky’s Ignition Interlock Device Laws

Kentucky-FlagIn the State of Kentucky, driving under the influence (DUI) repeat offenders may be court-ordered to install ignition interlock devices (IIDs) on all their vehicles. State-approved IID service providers install, maintain, calibrate, and remove IIDs and offenders are responsible for all costs related to every IID installed in their vehicles. IIDs in Kentucky require rolling re-tests, where the driver must submit a breath sample while the vehicle is in operation. All IIDs are programmed to alert law enforcement if a driver does not re-test and if the re-test breath sample shows a blood alcohol concentration (BAC) of .02 percent or higher.

After the first conviction, the offender must relinquish all license plates for the period of time the driver’s license is suspended. After the suspension period ends, an IID must be installed in all vehicles operated by the individual. While most drivers are considered DUI if they have a BAC of .08 percent, commercial drivers can only have a BAC of .04 percent. If an offender with an IID fails to take the device in to be calibrated at least every 97 days, the IID will engage the permanent lockout feature. This feature keeps the vehicle from starting and it must be towed to a service provider and reset at the offender’s expense.

An IID may be installed after:

  • 12-18 months for the second offense in five (5) years
  • 24-36 months for the third offense in five (5) years
  • 60 months for fourth offense in five (5) years