What is the legal definition of drunk?

What is the legal definition of drunk?

Neil Shouse (Defense Attorney) gives expert video advice on: What is the legal definition of 'drunk driving'?; What is a 'DUI'?; What is a 'DWI'? and more...

Drunk in the context of drunk driving means that the person is impaired. It means that their ability to think, their reaction times, their sensory perceptions, their ability to perform physical tasks, dividing their attention among multiple stimuli and multi-activities is compromised by virtue of having consumed alcohol.