All states now have two drunk driving laws: (1) driving under the influence of alcohol (aka “DUI”, with local variations, such as “driving while intoxicated” or “DWI”), and (2) the so-called per se law of driving with .08% or higher blood-alcohol concentration (BAC). Unless you refuse to take a chemical test, you will be charged [...]

Read the complete post at http://www.duiblog.com/2009/02/15/trial-by-machinebut-how-good-are-the-machines/