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What Blood Alcohol Concentration Mandates an Ignition Interlock?

Not all states have laws regarding ignition interlock devices, but Oklahoma does have these laws on the books. This is especially noteworthy if you've moved to Oklahoma from another state that did not have such laws, as you may be surprised to learn what sentences are possible, but it's also something any resident with a driver's license needs to be aware of.

So, how high does your blood alcohol concentration need to be for you to get an ignition interlock device on your car? Generally speaking, the device will be handed out if you blow a 0.15 or higher.

It's worth noting that this is higher than the 0.08 that is the legal limit, so it is possible to get a DUI and not have to use an ignition interlock device, though the judge may decide that you need one if there are extenuating circumstances.

If you're a first offender, the device will be installed on your vehicle for a year and a half. There is an electronic log that is connected to the device, that records your results. If you get a second offense, the BAC limit drops to 0.08-the same as a standard DUI-and you have to use the device for the next four years. It's important to know that this is the type of penalty you could face if you attempt to circumvent the system in any way-by having someone else blow for you, for example, or by starting your car before you begin drinking-and you are caught driving again.

Since this can have such a big impact on your life, make sure you fully understand your legal options.

Source: Life Safer, "Ignition Interlock Laws in Oklahoma," accessed May 12, 2016