The Utah Legislature is under the impression that dropping the DUI limit from 0.08 to 0.05 will lower the amount of driving under the influence on Utah roads. It will not.
The majority of those who drink and drive are responsible adults. A few are not, and their levels will probably exceed 0.08. There are far more folks texting, distracted or fatigued while driving than under the influence of alcohol.
Scientific studies have shown that driving with levels between 0.05 and 0.08 does not significantly impact a driver's ability. We will just be increasing the number of responsible people we "catch."