Our Legislature has tightened up the DUI laws again: "In Tennessee you can be considered an “impaired” driver if you're operating a motor vehicle with a BAC of .08 or higher, the same as the national limit, however if you are operating a commercial vehicle your limit is dropped to .04, even lower is the limit for drivers under 21 (.02) If you are pulled over and your BAC level is greater than a .15, the state is now making it automatic that a igniton interock system is situated in their vehicle."

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