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Science 2013-03-22 2 min read

Michigan drunk driving laws: All about ignition interlocks

Ignition interlock devices serve as a deterrent for preventing drunk driving offenders from reoffending. The systems are mandatory for particular offenders.

March 22, 2013

Michigan drunk driving laws: All about ignition interlocks

Article provided by Willis Law
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In Michigan, there are hefty consequences for those convicted of drunk driving. In addition to fees and jail time, offenders are often presented with driving limitations, which are intended to help serve as deterrent for future criminal actions.

An ignition interlock device (IID) is an alcohol breath-evaluating instrument, which is installed in a car and prevents it from starting if a driver's blood-alcohol concentration (BAC) is too high to safely operate a vehicle. This device is a state-mandated deterrent, which aims to prevent convicted drunk drivers from reoffending. The state takes this prevention method very seriously. If an offender does not comply with IID requirements, this might lead to additional criminal sanctions.

When is the use of an IID required in Michigan?

In Michigan, if one is convicted of drunk driving for the first time and is found to have a blood-alcohol concentration of .17 percent, he or she must install an IID. Repeat offenders are also required to use the device for BACs of .17 percent or higher. It is also mandatory if a second offense occurs within seven years of the first conviction or a third violation occurs within ten years of a former sentence.

If an IID is required, it must be installed on all vehicles operated by the offender and the individual is responsible for any costs related to the equipment. Fortunately, the state permits low-income residents an expense break, permitting a maximum operating cost of approximately $2.00 per day.

What are the penalties for not using a state-mandated IID?

If an offender is ordered to use an IID and is found driving without one properly installed, the individual will be arrested and his or her vehicle impounded. He or she may receive additional suspensions.

In Michigan, IID violations result in an immediate license revocation. Also, offenders can be ordered to use IID for an added period. IID violations include the following:
-Failure to service the device in accordance with legal requirements
-Three start-up test failures within a specified monitoring period
-Tampering with the IID
-An improperly installed or missing IID
-An arrest or conviction for drunk driving (for example, operating another's vehicle under the influence)

Ultimately, if a convicted offender muddles with IID requirements, supplementary consequences will result.

If you have been charged with a drunk driving offense, you may benefit from retaining a qualified criminal defense attorney. As you work through the legal system to address any charges or potential sentences, an experienced lawyer can help you attack complex issues.