(2) Not less than 0.08 percent by weight of alcohol in a person’s blood constitutes being under the influence of intoxicating liquor.
(3) Notwithstanding subsection (2) of this section, for purposes of the Motorist Implied Consent Law as defined in ORS 801.010, for a person who is under 21 years of age, any amount of alcohol in the blood constitutes being under the influence of intoxicating liquor.
(4) Percent by weight of alcohol in the blood shall be based upon grams of alcohol per 100 milliliters of blood or based upon grams of alcohol per 210 liters of breath. [1983 c.338 §590; 1985 c.16 §297; 1989 c.715 §7; 1991 c.860 §8; 2011 c.260 §1]