|Health Factors:||Alcohol & Drug Use|
|Decision Makers:||Local Government State Government Federal Government|
|Population Reach:||50-99% of WI's population|
|Impact on Disparities:|
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Blood alcohol concentration (BAC) laws set legal limits for drivers' blood alcohol concentrations (BACs). In the United States, lower BAC limits are generally set for drivers under the legal drinking age. In other countries, lower levels often apply to newly licensed drivers or newly licensed drivers under a specified age (CG-Motor vehicle injury).
There is strong evidence that 0.08% BAC laws reduce alcohol-related motor vehicle crashes and fatalities compared to higher BAC levels (CG-Motor vehicle injury, NICE-Killoran 2010, Bernat 2004). Setting lower BAC limits for young or inexperienced drivers has also been shown to reduce crashes and fatalities; however, additional evidence is needed to confirm effects (CG-Motor vehicle injury).
Research suggests that lowering BAC limits further (e.g., from 0.08% to 0.05%) can further reduce crashes and fatalities (NICE-Killoran 2010).
All 50 states and Washington, DC, have BAC limits of 0.08% for drivers age 21 and over. Limits for drivers under the age of 21 range from 0.00% – 0.02% (APIS).
Wisconsin is one of 15 states that has a BAC limit of 0.00% for drivers under the age of 21 (APIS).
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