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Washington


Washington’s DUI laws forbid a person from operating or being in actual physical control of a motor vehicle:
 
  • + with a blood alcohol content (BAC) of .08% or greater
  • + with a THC concentration of 5 nanograms or more per milliliter of blood, or
  • + while under the influence of drugs, alcohol, or marijuana.


A DUI involving a BAC of .08% or more is called a “per se DUI.” Just as alcohol affects different people differently, the volume of alcohol necessary to reach .08% can differ for different people.