Illinois Lawmakers Consider Lowering DUI Limit to One of the Strictest in the U.S.
Illinois drivers could soon see a major change to the state’s drunk driving laws, one that would make Illinois among the strictest in the country.
A newly filed proposal in Springfield would significantly lower the legal threshold for impairment, affecting not just drivers, but also boaters and snowmobilers across the state.
What House Bill 4333 Would Change
House Bill 4333, introduced by State Rep. Daniel Didech (D-59th), would amend the Illinois Vehicle Code by replacing every reference to the current legal blood-alcohol concentration (BAC) limit with a lower standard.
If passed, the measure would create a single, stricter impairment threshold across nearly all motor vehicle-related offenses.
How Strict Would the New DUI Standard Be?
Under the proposal, Illinois would lower the legal BAC limit from 0.08 to 0.05.
Utah is currently the only state in the nation that enforces a 0.05 limit statewide.
The change would apply to driving, boating, snowmobiling and could even factor into certain workplace injury claims involving vehicle use.
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What 0.05 BAC Means for Drivers
Science-based BAC charts show that impairment can occur sooner than many realize.
- An average-size woman (120–140 pounds) may reach 0.05 after just one standard drink, especially on an empty stomach.
- An average-size man (160–180 pounds) typically measures around 0.02–0.03 after one drink and may approach 0.05 after two.
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Why Supporters Say It Matters
Supporters argue lowering the limit could reduce traffic fatalities and align Illinois with recommendations from national safety organizations.
According to mystateline.com, the bill has been assigned to committee in the Illinois House but has not yet been scheduled for a hearing. Lawmakers will decide in the coming months whether Illinois joins Utah with one of the nation’s strictest DUI standards.
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Gallery Credit: Katherine Gallagher