Ignition Interlock Program

  What is an "Interlock?" An Ignition Interlock is a device that is installed on motor vehicles to prohibit individuals from operating a vehicle while under the influence of alcohol. It requires your breath sample before the engine will start and you are periodically required to provide breath samples while driving. If the device detects an elevated alcohol concentration level, the vehicle will not start.

You will be required to have an Ignition Interlock Device and make application for an Ignition Interlock Restricted License if you have been convicted of Driving under the Influence of Alcohol.

  • First DUI conviction with a BAC of .15 or above
  • Second or subsequent DUI conviction regardless of the BAC level

Circumventing or disconnecting the device will result in additional legal action, driving penalties and additional ignition interlock required time. Anyone assisting with device tampering and/or circumvention may also be subject to criminal and/or suspension action.


Ignition Interlock Restricted License

Once you have received notification from the Department of an ingnition interlock requirement, you will need to do the following: 

  • Have a Wyoming approved ignition interlock device installed in any vehicle you plan on driving. The device must be installed in Wyoming at an approved Sevice Center by a Wyoming-Certified technician. The driver must provide a copy of the ignition interlock device installation certificate to the Department;

  • File SR-22 insurance with the Department;

  • Apply for a special "IIR" restricted driver's license.

  • Pay the $50 reinstatement fee, regular driver license fee and the $100 ignition interlock administrative fee.

 An ignition interlock restricted license shall not be issued to any person who is not eligible.  An ignition interlock restricted license shall not be issued to any person holding a commercial driver’s license (CDL).

For more information, view the Ignition Interlock Program brochure.

Wyoming Approved Ignition Interlock Companies

Below are independent, private companies whose ignition interlock device meets the specifications required by law in Wyoming and approved by WYDOT-Driver Services program. Costs may vary, so please contact them for information and to make an appointment for installation at an approved Service Center within Wyoming:


Ignition Interlock Assistance

Indigent persons (Wyoming Statute 31-7-401) required to operate only vehicles equipped with an ignition interlock device may have ½ the costs of obtaining and using such device paid from funds made available by the state.  A person shall be considered indigent if they are able to produce evidence that they are eligible and qualified to participate in the federal supplemental nutrition assistance program (SNAP).

To see if you are eligible, you will need to submit the application for Ignition Interlock Assistance. If approved, the $100 Ignition Interlock administrative license fee would not be required when applying for the Ignition Interlock license.