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Drunk Driving | Statistics and Resources | NHTSA
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Drunk Driving Overview
Every day, about 34 people in the United States die in drunk-driving crashes — that’s one person every 42 minutes. In 2023, 12,429 people died in alcohol-impaired driving traffic deaths. These deaths were all preventable.
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Safety Facts 12,429 Deaths from drunk-driving crashes in 2023
SourceCampaignBuzzed Driving Is Drunk Driving
Drunk DrivingThe Issue NHTSA In ActionResources
The Issue
How alcohol affects driving ability
Traffic Safety Facts & Data Publications
Alcohol is a substance that reduces the function of the brain, impairing thinking, reasoning and muscle coordination. All these abilities are essential to operating a vehicle safely.
As alcohol levels rise in a person’s system, the negative effects on the central nervous system increase. Alcohol is absorbed directly through the walls of the stomach and small intestine. Then it passes into the bloodstream where it accumulates until it is metabolized by the liver. A person’s alcohol level is measured by the weight of the alcohol in a certain volume of blood. This is called Blood Alcohol Concentration, or BAC. At a BAC of .08 grams of alcohol per deciliter (g/dL) of blood, crash risk increases exponentially. Because of this risk, it’s illegal in all 50 states, the District of Columbia and Puerto Rico to drive with a BAC of .08 or higher, except in Utah where the BAC limit is .05.
However, even a small amount of alcohol can affect driving ability. In 2023, there were 2,117 people killed in alcohol-related crashes where a driver had a BAC of .01 to .07 g/dL.
BAC is measured with a breathalyzer, a device that measures the amount of alcohol in a driver’s breath, or by a blood test.
The Effects of Blood Alcohol Concentration
| Blood Alcohol Concentration (BAC) in g/dL | Typical Effects | Predictable Effects on Driving |
|---|---|---|
| .02 | Some loss of judgment; relaxation, slight body warmth, altered mood | Decline in visual functions (rapid tracking of a moving target), decline in ability to perform two tasks at the same time (divided attention) |
| .05 | Exaggerated behavior, may have loss of small-muscle control (e.g., focusing your eyes), impaired judgment, usually good feeling, lowered alertness, release of inhibition | Reduced coordination, reduced ability to track moving objects, difficulty steering, reduced response to emergency driving situations |
| .08 | Muscle coordination becomes poor (e.g., balance, speech, vision, reaction time, and hearing), harder to detect danger; judgment, self-control, reasoning, and memory are impaired | Concentration, short-term memory loss, speed control, reduced information processing capability (e.g., signal detection, visual search), impaired perception |
| .10 | Clear deterioration of reaction time and control, slurred speech, poor coordination, and slowed thinking | Reduced ability to maintain lane position and brake appropriately |
| .15 | Far less muscle control than normal, vomiting may occur (unless this level is reached slowly or a person has developed a tolerance for alcohol), major loss of balance | Substantial impairment in vehicle control, attention to driving task, and in necessary visual and auditory information processing |
Frequently Asked Questions
Does the type of alcohol I drink affect my BAC?
What affects my BAC?
Can I determine my BAC?
What impact does BAC have on my driving?
The Issue
Risk Factors
Driving After Drinking
Driving after drinking is deadly. Yet it still continues to happen across the United States. If you drive while impaired, you could get arrested, or worse — be involved in a traffic crash that causes serious injury or death.
About 30% of all traffic crash fatalities in the United States involve drunk drivers (with BACs of .08 g/dL or higher). In 2023, there were 12,429 people killed in these preventable crashes. In fact, on average over the 10-year period from 2014-2023, about 11,000 people died every year in drunk-driving crashes.
In every state, it’s illegal to drive drunk, yet one person was killed in a drunk-driving crash every 42 minutes in the United States in 2023.
The Issue
Consequences
Know the FactsInteractions between alcohol and other substances in the body such as certain medications or illegal drugs increase impairment and make driving more risky.Also see Drug-Impaired Driving
Driving a vehicle while impaired is a dangerous crime. Tough enforcement of drunk-driving laws has been a major factor in reducing drunk-driving deaths since the 1980s. Charges range from misdemeanors to felony offenses, and penalties for impaired driving can include driver’s license revocation, fines, and jail time. It’s also extremely expensive. A first-time offense can cost the driver upwards of $10,000 in fines and legal fees.
Many states require offenders to install ignition interlock devices at the driver’s own expense. An ignition interlock device is a breath test device connected to a vehicle’s ignition. The vehicle cannot be operated unless the driver blows into the interlock and has a BAC below a pre-set low limit, usually .02 g/dL. NHTSA strongly supports the expansion of ignition interlocks as a proven technology that keeps drunk drivers from getting behind the wheel.
The Issue
Responsible behavior
BEING A RESPONSIBLE DRIVER IS SIMPLE: IF YOU ARE DRINKING, DO NOT DRIVE.
- Plan your safe ride home before you start the party, choose a non-drinking friend as a designated driver.
- If someone you know has been drinking, do not let that person get behind the wheel. Take their keys and help them arrange a sober ride home.
- If you drink, do not drive for any reason. Call a taxi, a ride-hailing service, or a sober friend.
- If you’re hosting a party where alcohol will be served, make sure all guests leave with a sober driver.
- Always wear your seat belt — it’s your best defense against impaired drivers.
If you see an impaired driver on the road, contact local law enforcement. Your actions could help save someone’s life.
NHTSA In Action
NHTSA is dedicated to eliminating risky behaviors on our nation’s roads
NHTSA demonstrates its commitment to eliminating drunk driving through research, public awareness campaigns, and state safety grant programs. We will continue until there are zero drunk-driving crashes on our roadways.
Campaigns
Drive Sober or Get Pulled Over
Buzzed Driving Is Drunk Driving
Ride Sober or Get Pulled Over
Resources
Laws.
Laws, Regulations and other Resources
Policy & Guidance
Significant Guidance Documents
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