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Ignition Interlock Providers

The Tennessee Department of Safety & Homeland Security is a staunch advocate of strong D.U.I. enforcement and highway safety. In a continuing effort to save lives, the Department is taking steps to ensure that Tennessee’s Ignition Interlock Program is effective and operating efficiently.

An ignition interlock is an alcohol detection device that is installed on a motor vehicle and analyzes breath samples of the driver. The device prevents an alcohol-impaired person from starting the vehicle and requires random retests be submitted during operation of the vehicle.

Tennessee Code Annotated (TCA) 55-10-417 is the current statute mandating the requirements of the ignition interlock usage in Tennessee. If a person is required by their local court or by the Department of Safety & Homeland Security to equip their vehicle(s) with an interlock device, they can visit one of the Department of Safety & Homeland Security’s certified ignition interlock providers to have a device installed.

Offenses occurring July 1, 2016 and later fall under the Compliance-Based Removal Law T.C.A 55-10-425: A person required to install and use only a functioning ignition interlock device is prohibited from removing or causing to be removed the ignition interlock device from the vehicle for which it was ordered, and the person shall be required to maintain the device in working order for a three hundred sixty-five (365) consecutive day period or for the entire period of the driver license revocation period, whichever is longer.

An overview of the compliance-base removal requirements can be found here.

If you have questions about your ignition interlock requirements under T.C.A. 55-10-417, or 55-10-425, please contact the Tennessee Highway Patrol Ignition Interlock Program at (615)743-4960, or

If you have questions about your revoked or restricted Tennessee drivers' license that do not pertain to ignition interlock, please call the Restricted License Information Line at (615)251-5250,  the Financial Responsibility Call Center at 1-866-903-7357, or the Drivers' License Call Center at 1-866-849-3548.


Ignition Interlock Provider Locations

For a list of Certified Ignition Interlock Service Centers, click here.

For a map of Certified Ignition Interlock Device Providers, click the image belowYou can use the search box on the top right corner of the map to narrow your location preferences using full address, ZIP code, city, or county.