The state of Arizona defines driving under the influence, or DUI, as driving or operating a vehicle while mentally or physically impaired by any drug, alcohol or vapor releasing substance.
This includes driving a vehicle with a blood alcohol concentration, or BAC, of 0.08% for a personal vehicle and 0.04% for vehicles requiring a commercial driver license, such as buses. This can also include driving while inhibited by medications, even those which may have been prescribed by your doctor.
According to the Motor Vehicle Division’s accident statistics, only 6% of all crashes in the state in 2007 were alcohol-related. However, this small number of alcohol-related accidents accounted for over one quarter of automotive fatalities in the state that same year