driving under the influence
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driv·ing under the influence
Legal Definition of driving under the influence
: the offense of operating a motor vehicle while intoxicated by drugs or especially alcohol
— called also driving while intoxicated, drunk driving, drunken driving
Note: Most states specify by statute a level of alcohol in the blood that creates a presumption that the person is under the influence of alcohol. The blood alcohol content is required to be .08 percent in most states.
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