If you are suspended for any of the following offenses you will be required to install an Ignition Interlock Device (IID) before your driver's license can be reinstated in Connecticut:
- Failing or refusing a chemical alcohol test
- Operating under the influence of alcohol or drugs
- Vehicular manslaughter
- Vehicular assault
What to Do
- Download and print the Ignition Interlock Device Installation Application (P-246 form). Complete part 1 of the application and sign the Operator Certification section. The vehicle listed on the form must have a valid registration. If you are not the owner of record for the vehicle, the registered owner must complete part 2.
- Contact one of the Connecticut-approved IID vendors to schedule an appointment to have the IID installed. The installer will complete part 3 of the application.
- Submit the completed P-246 form. If the vehicle is registered outside Connecticut submit a copy of the valid registration certificate.
- Pay the $175.00 restoration fee and the $100.00 IID Administration fee. Fees may be paid by a check or money order made payable to DMV and submitted with your IID application or you can pay the fees online.
Getting Your License Back
You may have other suspension matters, in addition to the IID, which must be resolved in order to be reinstated.
A final approval letter and restoration notice will be mailed to you. You may operate only a vehicle equipped with an IID for the duration required.
After you are restored, you must ensure that you have a current, valid driver license. If you were issued a Connecticut non-driver photo ID card during the suspension, you may exchange the ID for your previously held Connecticut driver's license.
If you hold an out-of-state driver license you must verify with the issuing state that it is valid before operating a vehicle. If you are now a Connecticut resident, you must transfer your out of state license to Connecticut.
Changes to Vehicle or IID Vendor Must Be Reported to DMV
IID Requirement from Another State
Prior to getting a Connecticut license, you must complete this process with DMV's Driver Services Division:
- Submit the terms of the other jurisdiction's IID restriction.
- Submit a certified copy of your driving history issued by the state that imposed the IID restriction. The history must be less than sixty (60) days old on the date it is submitted
- Download and print the Ignition Interlock Device Installation Application (P-246 form). Complete part 1of the application and sign the Operator Certification section. The vehicle listed on the form must have a valid registration. If you are not the owner of record for the vehicle, the registered owner must complete and sign part 2
- If your IID is currently installed by one of the Connecticut approved IID vendors, have the vendor or installer complete part 3. If the IID is installed by a non-approved vendor, contact one of the Connecticut-approved IID Vendors to have a new IID installed. The installer will complete Part three (3) of the application.
- Submit the completed P-246 form. If the vehicle is registered outside Connecticut, submit a copy of the valid registration certificate.
- Pay the $100.00 IID Administration fee. Fees may be paid by a check or money order made payable to DMV and submitted with your IID application or you can pay the fees online.
Driver Services Division
60 State Street
Wethersfield, Connecticut 06161-1013
Once your application has been approved you must obtain a Connecticut driver's license and Connecticut vehicle registration within 30 days.
Your Responsibilities with an IID
- Your DMV record will indicate that an IID must be installed in each vehicle(s) owned or operated by you. Law enforcement officials will have access to this information.
- You must bring each vehicle to the installer every 30 days for calibration. Failure to do so will result in the suspension of your driver’s license for failure to comply with the terms of the IID program.
- Anyone convicted of tampering with an IID, requesting someone else to blow into the IID, driving a vehicle without an IID, or who removed the IID without authorization will have their driver's license suspended.
- See additional violations and penalties for failure to comply with the terms of the IID program.
You can call the toll free number(s) below for IID cost, installation, or appointment information.
Participants in the IID program must pay all costs related to the installation and maintenance of the IID directly to the vendor. Costs are determined by the independent vendors and not the DMV.
For More Information
For information concerning license reinstatement or IID requirements, contact the DMV's Driver Services Division:
Mail your IID application to:
Department of Motor Vehicles
E-Mail your IID application e-mail us:
To call the Driver Services Division: