Arizona law prohibits driving “[w]hile under the influence of intoxicating liquor, any drug, a vapor releasing substance containing a toxic substance or any combination of liquor, drugs or vapor releasing substances if the person is impaired to the slightest degree." A first time offender is subject to a minimum 24 hour sentence in jail.
In Arizona, a third DUI within seven years of an earlier DUI conviction carries much harsher consequences than a first or second offense. Under Arizona law, it's illegal to drive or be in actual physical control of a vehicle while under the influence of alcohol or drugs. Generally, you can be convicted
Sobriety checkpoints are permitted in Arizona (see 691 P.2d 1073 (Ariz. 1984)). These checkpoints (also referred to as "mobile checkpoints" or "roadblocks") are police traffic stops that are not tied to any specific or individual suspicions.