I. No person shall drive or attempt to drive a vehicle upon any way or operate or attempt to operate an OHRV:
(a) While such person is under the influence of intoxicating liquor or any controlled drug, prescription drug, over-the-counter drug, or any other chemical substance, natural or synthetic, which impairs a person’s ability to drive or any combination of intoxicating liquor and controlled drugs, prescription drugs, over-the-counter drugs, or any other chemical substances, natural or synthetic, which impair a person’s ability to drive; or
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Terms Used In New Hampshire Revised Statutes 265-A:2


(b) While such person has an alcohol concentration of 0.08 or more or in the case of a person under the age of 21, 0.02 or more.
II. No person shall operate or attempt to operate a boat while under the influence of intoxicating liquor or a controlled drug, prescription drug, over-the-counter drug, or any other chemical substance, natural or synthetic, which impairs a person’s ability to drive or any combination of intoxicating liquor and a controlled drug or drugs, prescription drug or drugs, over-the-counter drug or drugs, or any other chemical substance or substances, natural or synthetic, which impair a person’s ability to drive or while such person has an alcohol concentration of 0.08 or more or in the case of persons under the age of 21, 0.02 or more.