Section 28.33.030 - Operating a commercial motor vehicle while under the influence of an alcoholic beverage, inhalant, or controlled substance(a) A person commits the crime of operating a commercial motor vehicle while under the influence of an alcoholic beverage, inhalant, or controlled substance if the person operates a commercial motor vehicle(1) while under the influence of an alcoholic beverage, inhalant, or any controlled substance;(2) when, as determined by a chemical test taken within four hours after the alleged offense was committed, there is 0.04 percent or more by weight of alcohol in the person's blood or 40 milligrams or more of alcohol per 100 milliliters of blood, or when there is 0.04 grams or more of alcohol per 210 liters of the person's breath; or(3) while under the combined influence of an alcoholic beverage, inhalant, and a controlled substance.(b) Operating a commercial motor vehicle while under the influence of an alcoholic beverage, inhalant, or controlled substance is a class A misdemeanor.(c) The sentencing of a person convicted under this section shall be in accordance with the minimum periods of imprisonment, fines, rehabilitative treatment, and other provisions of AS 28.35.030, as if the person had been convicted of a violation of AS 28.35.030. For purposes of sentencing, convictions for operating a commercial motor vehicle while under the influence of an alcoholic beverage, inhalant, or controlled substance under this section, and for refusal to submit to a chemical test under AS 28.35.032, if arising out of a single transaction, are considered one previous conviction.