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Posted over 2 years ago. Applies to Arizona, 0 helpful votes, 0 comments
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Different TermsThe specific criminal offense may be called, depending on the jurisdiction, driving while intoxicated (DWI), operating while intoxicated (OWI), operating a motor vehicle while intoxicated (OMVI), driving under the influence [of alcohol or other drugs] (DUI), driving under the combined influence of alcohol and/or other drugs, driving under the influence per se or drunk in charge [of a vehicle]. Such laws usually (but not always) also apply to boating, piloting aircraft, or driving a bicycle. 2
DefinitionHistorically, guilt was established by observed driving symptoms, such as weaving; administering field sobriety tests, such as a walking a straight line heel-to-toe or standing on one leg for 30 seconds; and the arresting officer's subjective opinion of impairment. Limits for chemical tests are specific for blood alcohol concentration or concentration of alcohol in breath. With the advent of a scientific test for blood alcohol content (BAC), enforcement regimes moved to pinning culpability for the offense to strict liability based on driving while having more than a prescribed amount of blood alcohol, although this does not preclude the simultaneous existence of the older subjective tests. BAC is most conveniently measured as a simple percent of alcohol in the blood by weight. It does not depend on any units of measurement. 3
What Does It Mean?The validity of the testing equipment/methods and mathematical relationships for the measurement of breath and blood alcohol have been criticized. Driving while consuming alcohol may be illegal within a jurisdiction. In some it is illegal for an open container of an alcoholic beverage to be in the passenger compartment of a motor vehicle or in some specific area of that compartment. 4
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