Ignition Interlock Devices in Texas

When is an IID Authorized?

Texas has authorized the use of ignition interlock devices (IIDs) for certain drivers convicted of alcohol related driving offenses.

When are IIDs Authorized?

Texas courts authorize the installation and maintenance of an IID as a condition of reinstatement of driving privileges for:

  • first offenders applying for an occupational license 
  • subsequent offenders within 10 years to only operate vehicles that are equipped with ignition interlock devices.
  • second or subsequent offenses or BAC greater than 0.15: The court must order offender to install ignition interlock devices on all of the motor vehicles he owns for 1 year following a period of license suspension.

What’s an IID?

An IID connects to the vehicle dashboard and the driver breaths into the device prior to starting the vehicle. If the IID detects a BAC above the limit programmed the device (typically calibrated at .02%), then the engine won’t start. Read more about ignition interlock devices (IIDs).

Where Can I Find an IID Provider?

IID providers are approved for installation throughout Texas. You can find a list of approved IID providers at the Texas Department of Public Safety website.

Who Pays For it?

In almost all cases the driver who has been convicted of a DUI/DWI pays for the installation and lease of the ignition interlock system. You can expect to pay up to $100 for installation (although some companies offer free installation) and between $75-$120 per month for the lease. This is a rough estimate and your price may be higher or lower depending on your location.

 

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