Evaluation of Michigan's Repeat Alcohol Offender Laws

摘要

The University of Michigan Transportation Research Institute (UMTRI) was selected to evaluate the impact and effectiveness of Michigan's repeat alcohol offender package of laws by investigating fourteen research objectives. These objectives ranged from determining the effects of the laws on crashes and crash-related injury to determining the effectiveness of sanctioning on drunk driving recidivism to assessing the opinions of prosecuting attorneys in Michigan. The study found about a 30 percent decrease in the rate of crashes involving drivers currently under license suspension/revocation. This decrease in crashes resulting in about a 37 percent decrease in injury rates and a 13 percent decrease in fatality rates from crashes involving drivers currently under suspension/revocation. The study also found that there was about a 39 percent decrease in crashes involving people with two or more previous alcohol-related convictions, while there was only a one percent decrease in crashes involving people with one previous alcohol-related conviction.