Where can I obtain an interlock device?

Your state DMV can direct you to approved suppliers of interlock devices. There are also suppliers readily available online, but check with your DUI court order for specific instructions.

An ignition interlock measures the alcohol content of a driver's breath through a device installed on the vehicle's dashboard. Many states require DWI offenders—even first-timers—to install an interlock. Once installed, your car will not start if a high level of alcohol is detected (usually .02 or higher), and many devices also require rolling tests during transit. These subsequent tests are intended to prevent a fraudulent measurement at the onset from someone not actually driving the vehicle. All results are recorded by the interlock device.

DUI laws vary by state, so be sure to check for specific requirements about interlock. In Florida, for example, a court-ordered interlock will cost you about $250 to install and maintain, and the device is set to lock the ignition at breathalyzer readings above .05.

If you have been charged with a DUI, interlock is just one of many consequences you might face, including revocation or restriction of your drivers license. Check with a local DUI attorney if you have questions about your particular case. If your financial responsibility is in question, you might also be required to supply SR-22 insurance as proof of your policy status.

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