Show All Answers

1. Are there costs associated with the Interlock Device?

The defendant is required to pay a $10 monthly monitoring fee to Williamson County. The defendant will also pay the interlock vendor for the installation and a monthly lease fee for the device. The monthly lease fee will vary depending on the interlock company.

2. What if I do not have a vehicle?

You should discuss this with your attorney. If you don't have an attorney you may hire your own, or if you cannot afford to hire your own attorney, you may request a court appointed attorney using the link below..

• Procedure on Requesting a Court-Appointed Attorney (PDF)
• Procedure on Requesting a Court-Appointed attorney in Spanish (PDF)

3. What if I don’t install the device or pay the fees?

If the defendant fails to install the interlock device by the court ordered deadline or fails to pay the monthly fees, a warrant may be issued.

4. What if I have technical difficulties with the device?

If you have questions regarding basic operation of the device such as physical installation, how to use or manage the device, how to transfer the device from one vehicle to another, physical removal or return of the device, please contact the ignition interlock company directly.

5. What if I get an occupational license while awaiting sentencing?

Defer to assigned courts process.

6. Who monitors the device?

The monitoring agency for Williamson County is Pretrial Services.