The Scale of Alcohol-Impaired Driving Deaths

Drunk driving is one of the most consistently lethal behaviors on US roads. Alcohol-impaired crashes (involving at least one driver with BAC 0.08 or higher) account for roughly 18.8% of all US traffic fatalities as of 2023. The 2015–2023 period covered in PlainRoadSafety data includes approximately 85,664 alcohol-impaired fatalities, averaging about 9,518 per year.

The pattern within each year is predictable: alcohol-impaired fatal crashes cluster heavily at night (particularly 9 PM – 3 AM), on weekends (Friday and Saturday nights account for disproportionate shares), and in summer months. Nearly half of all nighttime traffic fatalities involve an alcohol-impaired driver. This predictability means enforcement is highly targetable, resources deployed at the right times and locations have demonstrably reduced fatalities in states that have implemented data-driven enforcement strategies.

Browse alcohol-impaired crash data by state on the causes overview or see your state's DUI profile on the states page.

States with Highest DUI Fatality Rates

Alcohol's share of traffic fatalities varies significantly across states. The table below shows states at the high and low ends of alcohol-impaired driving involvement, based on FARS data.

Percentage and death counts represent alcohol-impaired fatalities as a share of total traffic fatalities across the full 2015–2023 period. Source: NHTSA FARS. Figures are approximate based on NHTSA imputation methods for untested drivers.

Decades of Progress, a Pandemic-Era Wobble, Then a New Low

The long-term arc of drunk driving deaths in America, per NHTSA's own published history, is one of substantial progress from the early 1980s through the 2010s, driven by the founding of MADD (1980), national minimum drinking age 21 (1984), nationwide 0.08 BAC adoption, sobriety checkpoints, and ignition interlock programs. PlainRoadSafety's own dataset covers 2015–2023 and shows the more recent chapter of that story:

• 2015: 10,245 alcohol-impaired fatalities (28.9% of all traffic deaths that year).
• 2016: 10,389 alcohol-impaired fatalities (27.5% of all traffic deaths that year).
• 2017: 10,313 alcohol-impaired fatalities (27.5% of all traffic deaths that year).
• 2018: 9,671 alcohol-impaired fatalities (26.3% of all traffic deaths that year).
• 2019: 9,592 alcohol-impaired fatalities (26.4% of all traffic deaths that year).
• 2020: 10,636 alcohol-impaired fatalities (27.3% of all traffic deaths that year).
• 2021: 8,647 alcohol-impaired fatalities (20% of all traffic deaths that year).
• 2022: 8,486 alcohol-impaired fatalities (19.9% of all traffic deaths that year).
• 2023: 7,685 alcohol-impaired fatalities (18.8% of all traffic deaths that year).

Within this window, 2020 saw a temporary uptick (consistent with pandemic-era changes in traffic patterns and enforcement), but every year since has declined, and 2023 recorded the lowest alcohol-impaired fatality count in this dataset's entire 2015–2023 span. Figures for years before 2015 are not part of PlainRoadSafety's own dataset; consult NHTSA's Traffic Safety Facts annual reports directly for the longer historical series.

Why Some States Have Much Higher Rates

The gap between Utah (20% of fatalities involving alcohol-impaired drivers) and Montana (44%) is not explained by alcohol culture alone. Structural factors drive the difference:

• Enforcement density: Rural states with long road networks have fewer patrol officers per mile. DUI checkpoint density and random patrol frequency are both lower. Deterrence depends on perceived probability of detection, lower detection probability correlates with more impaired driving.
• Road characteristics: High-speed rural roads combined with alcohol impairment are particularly lethal. The same BAC level that causes a minor fender-bender at 25 mph causes a fatal crash at 65 mph.
• Utah's unique profile: Utah has the lowest alcohol-impaired fatality rate, partly reflecting the large LDS (Latter-day Saints) population, which has very low alcohol consumption rates. Utah also lowered its legal BAC limit to 0.05 in 2019, the first state to do so, and has measured a subsequent decline in alcohol-involved crashes.
• IID law strength: States with comprehensive ignition interlock laws that apply to all DUI offenders (not just repeat offenders) show measurably lower alcohol-impaired fatality rates after implementation.

What Interventions Work

Decades of NHTSA and academic research have established a clear evidence hierarchy for DUI reduction:

• Sobriety checkpoints: Reduce alcohol-related crashes by approximately 20% where conducted. The deterrent effect extends beyond those stopped, awareness of checkpoint operation changes driving behavior broadly. Currently prohibited in 11 states due to state constitutional interpretations.
• Ignition Interlock Devices (IIDs): Prevent vehicle operation with BAC above preset level. Show 70%+ reduction in repeat DUI offenses while installed. States with all-offender IID laws (vs. repeat-offender only) show the largest fatality reductions.
• Administrative License Revocation (ALR): Immediate license suspension at the point of arrest (not conviction) is more effective as a deterrent than waiting for court proceedings. All states have ALR laws, but enforcement consistency varies.
• Consistent DUI courts: Specialized DUI court programs that combine treatment, supervision, and graduated sanctions show significantly lower recidivism rates than traditional criminal court processing.
• Ride-share availability: Studies have documented modest but measurable DUI fatality reductions in cities following Uber and Lyft market entry, attributing the effect to increased availability of low-friction sober transportation alternatives.

See how your state compares on DUI enforcement policies in the state profiles.

Drug-Impaired Driving: The Growing Companion Problem

As alcohol-impaired driving has (until recently) trended downward, drug-impaired driving has trended upward. NHTSA FARS data shows that the percentage of fatally injured drivers testing positive for drugs (including cannabis, opioids, stimulants, and prescription medications) has increased from approximately 28% in 2007 to over 40% in recent years. This does not mean all drug-positive drivers caused their crash, but it illustrates the growing scope of impaired driving beyond alcohol.

The challenge: unlike alcohol, there is no field-testable roadside equivalent of a breathalyzer for most drugs. THC remains detectable in blood and urine long after acute impairment has passed. Opioid impairment is clinically variable. This makes both measurement and enforcement significantly harder. NHTSA's Drug Recognition Expert (DRE) program trains officers in drug impairment evaluation, but deployment is limited relative to the scale of the problem.

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