Divided Attention Test

A test which requires the subject to concentrate on both mental and physical tasks at the same time. DWI/DUI-The acronym "DWI" means driving while impaired and is synonymous with the acronym "DUI", driving under the influence or other acronyms usedto denote impaired driving. These terms refer to any and all offenses involving the operation of vehicles by persons under the influence of alcohol and/or other drugs.

Source: NHTSA