18 U.S.C. § 343 : US Code - Section 343: Presumptions

Search 18 U.S.C. § 343 : US Code - Section 343: Presumptions

      For purposes of this chapter - 
        (1) an individual with a blood alcohol content of .10 percent
      or more shall be presumed to be under the influence of alcohol;
      and
        (2) an individual shall be presumed to be under the influence
      of drugs if the quantity of the drug in the system of the
      individual would be sufficient to impair the perception, mental
      processes, or motor functions of the average individual.