The Illinois legal limit is 0.08 percent; however, studies show that drivers with a BAC of as low as 0.01 percent can cause devastating car accidents.
Motorists who drive with a blood alcohol concentration of 0.08 percent or above in Illinois are considered intoxicated and can be arrested for a DUI. However, drivers who have a BAC below 0.08 percent can present hazards for other motorists on the road as well. According to Mothers Against Drunk Driving, Illinois experienced a 15 percent increase in their drunk driving fatality rate in 2012. That year, approximately 34 percent of all fatal car and truck accidents were attributed to drunk drivers. With these high statistics, driving while intoxicated has become a major problem for Illinois motorists.