2,028 People Killed by “Legal” Drivers Last Year. One State Had the Fix Since 2018.

According to the toxicology reports, 2,028 people died in 2024 in crashes involving a driver whose blood alcohol content registered between .01 and .07 g/dL.^[1] Every one of those drivers was legally permitted to operate a motor vehicle in 49 of 50 states. Not impaired under the law. Just impaired enough to kill someone.

Utah is the exception. Governor Gary Herbert signed HB 155 in March 2017, dropping the state's legal BAC limit to .05 g/dL effective December 30, 2018.^[2] Predictions were apocalyptic: restaurants would close, tourism would collapse, casual drinkers would become criminals overnight. NHTSA evaluated what actually happened: fatal crashes fell 19.8%, fatality rates dropped 18.3%, and neighboring states without the law saw declines of roughly 5.6% in the same period.^[3] Alcohol sales and tourism were both unaffected. What changed was that 22.1% of drinkers reported modifying their behavior after the law took effect, which is the polite way of saying one in five people who used to drive after two glasses of wine stopped doing it.

None of this was a surprise to the NTSB. In 2013, their safety study “Reaching Zero” recommended every state adopt a .05 BAC limit, citing the well-established literature on crash risk escalation between .05 and .08.^[4] A peer-reviewed meta-analysis by Fell and Voas estimated that a national .05 standard would prevent approximately 1,790 deaths per year, driven primarily by an 11.1% decline in fatal alcohol-related crashes.^[5] Multiply 1,790 by the 13 years since that recommendation. You get roughly 23,270 preventable deaths, which is more people than live in Juneau, Alaska.

I ran the cumulative toll a different way. NHTSA's annual data shows alcohol-impaired fatalities (BAC ≥ .08) hit 11,904 in 2024, accounting for 30.3% of 39,254 total traffic deaths.^[1] Add the 2,028 low-BAC deaths and alcohol-involved fatalities reach 13,932, or 35.5% of all road deaths. One in three people killed on American roads in 2024 died in a crash where someone had been drinking. But the legal system only cares about 85% of those crashes. The remaining 15% are a policy choice, not a data gap.

Limitations

NHTSA imputes BAC values for drivers who were not tested, introducing uncertainty into both the 2,028 and 11,904 figures. Utah's demographics skew toward lower baseline alcohol consumption due to the state's large LDS population, so the 19.8% fatal crash reduction may not translate directly to states with higher per-capita drinking. Deterrent effects likely matter more than direct enforcement at .05–.07: people changing behavior outweighs cops arresting drivers at .06. And the 2,028 figure spans all of .01–.07; a .05 law would only capture the .05–.07 band, not the lower range.

Strongest counterargument

A .05 BAC limit is functionally a two-drink maximum for many adults, and the enforcement infrastructure does not exist to support it. Police departments are already under-arresting at the current .08 threshold, with DUI enforcement declining nationally even as impaired driving deaths climb. Lowering a limit that officers cannot consistently enforce converts a practical problem into a symbolic gesture, one that disproportionately burdens lower-income drivers who cannot absorb a DUI arrest or afford rideshare alternatives in rural areas with no public transit. Meanwhile, the hospitality industry, which employs 15.6 million Americans, argues that criminalizing a second beer with dinner would suppress dining-out spending with no measurable safety gain beyond the deterrence Utah already demonstrated. If deterrence is the mechanism, public awareness campaigns might achieve the same behavioral shift without the criminal justice overhead.

What you should do

Search your state legislature's website for pending .05 BAC bills and contact your representative if one exists. If you have consumed any alcohol and plan to drive, understand that your crash risk at .05 is three to five times higher than at .00, regardless of whether your state considers it legal.^[5] Use rideshare. Not because it is illegal to drive, but because the FARS data says 2,028 families learned in 2024 that “legal” does not mean “safe.” Utah residents: your law works. Push for your neighbors to adopt it.