Secretary of State suspends ignition interlock device manufacturer

The device measures the driver's bodily alcohol content and will not start the vehicle if the device detects a BAC of 0.025 or higher.

Alcohol Detection Systems has been suspended and may no longer supply breath alcohol ignition interlock devices in the state of Michigan.

That's according to a press release from Secretary of State Ruth Johnson sent out Thursday, March 8.

According to the release, the devices manufactured by ADS failed to require the necessary start-up tests and periodic retests as mandated by Michigan law. In addition, the company failed to report violations in which drivers were able to start or continue driving without providing a breath sample.

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Ignition interlock devices require a breath sample before the driver can start their car. Random breath tests also are required while the vehicle is in operation to ensure the driver remains alcohol-free.

The device measures the driver’s bodily alcohol content (BAC) and will not start the vehicle if the device detects a BAC of 0.025 or higher.

If you have an ADS device, you need to contact Michigan Interlock to have it removed -- for free -- and have a new device installed by one of five approved manufacturers.

An ignition interlock device is required as a condition of a restricted driver’s license for drivers with a first conviction for Operating with a Blood Alcohol Content of 0.17 or more and for habitual offenders who have any of the following combination of alcohol or controlled substance related driving convictions:

  • Two or more convictions within seven years
  • Three or more convictions within 10 years

Information about the other ignition interlock manufacturers in Michigan is available by clicking here.

If you have any additional questions, please call the Michigan Department of State at 888-767-6424.

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