Understanding Missouri’s ignition interlock device laws

In many cases, Missouri motorists who receive convictions for drunk driving must install what is known as an ignition interlock on their cars, vans or trucks, which are devices that prevent the vehicle from starting up until the driver provides a suitable breath sample. At Kelly, Symonds & Reed, LLC, we recognize that ignition interlock devices can prove quite costly, in addition to being a hindrance, and we have helped many people facing drunk driving charges defend themselves against these allegations.

According to the Missouri Department of Transportation, anyone who receives more than one alcohol-related traffic offense must install an ignition interlock device on their vehicles for at least six months or longer. However, you may need to do so even as a first-time offender if the court determines it is necessary. Additionally, you will need to install the device on your vehicle at your own expense before the court will reinstate your driving privileges or issue you a restricted license.

The cost of installing and keeping the ignition interlock device on your vehicle will vary from one provider to the next. However, you can get at least some sense of what you can expect to pay by contacting a few providers from the list provided on the Missouri Department of Transportation website. Also, know that you will need to install the device on any vehicle you plan to drive during the installation period, regardless of whether the car or truck is your primary vehicle.

You may not, however, share your ignition interlock device with someone else, nor can you have someone else blow into it just to start the vehicle and then get behind the wheel yourself. You can find out more about drunk driving charges and penalties on our webpage.


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