There is no set number of drinks that will put every person over Florida’s legal alcohol limit. One person could reach a blood alcohol concentration (BAC) of 0.08 after fewer drinks than another person because alcohol affects people differently.
For most adult drivers, Florida’s DUI law sets a BAC or breath-alcohol level of 0.08 or higher as one basis for a DUI charge. But that number does not create a guaranteed “safe zone.” Florida law also allows a person to be charged with DUI when alcohol, drugs, or certain chemical substances impair their normal faculties—even if a test result is below 0.08.
If you have already been arrested or charged with DUI in St. Petersburg or elsewhere in Pinellas County, the question is no longer simply how many drinks you had. The circumstances of the stop, the officer’s observations, testing procedures, and other evidence can all matter.
What Is the Legal BAC Limit in Florida?
Under Florida Statute § 316.193, a person may commit DUI if they are driving or in actual physical control of a vehicle and either:
- Their normal faculties are impaired by alcohol, certain chemical substances, or controlled substances;
- Their blood-alcohol level is 0.08 or higher; or
- Their breath-alcohol level is 0.08 or higher.
Florida therefore does not require prosecutors to prove a BAC of 0.08 or higher in every DUI case. Evidence of impairment can provide a separate basis for a charge.
How Many Drinks Does It Take to Reach a .08 BAC?
There is no accurate formula that can tell a particular person, “You can have two drinks and still legally drive.”
BAC can vary based on numerous factors, including:
- How much alcohol a person consumes
- How quickly they drink
- Body size and body composition
- Whether and when they have eaten
- The alcohol content and serving size of each drink
- Individual metabolism
- Medications and other substances
Even drinks that look similar may contain substantially different amounts of alcohol. A cocktail may contain more than one standard serving of alcohol, and beer can vary significantly in alcohol content.
For that reason, charts estimating BAC based on body weight and number of drinks should not be treated as a reliable way to decide whether it is safe or legal to drive.
Can You Get a DUI in Florida With a BAC Below .08?
Yes.
A common misunderstanding is that a driver cannot be convicted of DUI unless a breath or blood test shows 0.08 or higher. Florida law separately prohibits driving or being in actual physical control of a vehicle when a person’s normal faculties are impaired.
Florida law also addresses how alcohol-test results may be considered as evidence. A result of 0.05 or lower creates a presumption, for purposes covered by the statute, that the person's normal faculties were not impaired by alcohol. A result above 0.05 but below 0.08 does not create a presumption either way and may be considered together with other competent evidence. A result of 0.08 or higher is prima facie evidence of impairment.
That means the surrounding evidence can matter in a case involving a BAC below 0.08.
What Does “Normal Faculties” Mean?
Florida law uses the phrase “normal faculties” when defining impairment. These faculties include abilities such as seeing, hearing, walking, talking, judging distances, driving, making judgments, responding to emergencies, and carrying out ordinary mental and physical activities.
During a DUI investigation, officers may document observations they believe suggest impairment. Those observations can become evidence, but an arrest does not establish guilt.
A person accused of DUI is presumed innocent unless and until the state proves the charge beyond a reasonable doubt.
Is the Legal Limit Different for Drivers Under 21?
Florida has a separate zero-tolerance law for drivers under age 21.
Under Florida Statute § 322.2616, a driver under 21 who has a blood- or breath-alcohol level of 0.02 or higher can face an administrative driver’s-license suspension. A first violation generally carries a six-month suspension under the statute.
It is important not to describe 0.02 as simply the “DUI limit” for everyone under 21. The under-21 provision creates a separate administrative rule. A criminal DUI charge is governed by Florida’s DUI statute and may depend on impairment, a BAC of 0.08 or higher, or other applicable evidence.
What Is the Alcohol Limit for Commercial Drivers in Florida?
Commercial-driver rules are also more restrictive than the ordinary 0.08 DUI threshold.
Florida law states that a person with any alcohol in their body may not drive or be in actual physical control of a commercial motor vehicle. A violation can result in being placed out of service for 24 hours. A blood- or breath-alcohol level of 0.04 or higher can trigger additional commercial-driver consequences.
The 0.04 figure therefore should not be described as the only alcohol restriction that applies to Florida commercial drivers. Florida's commercial-motor-vehicle statute is stricter.
The ordinary DUI statute may also apply independently when its requirements are met.
How Do Police Test for Alcohol in a Florida DUI Case?
A DUI investigation may involve several different types of evidence. Officers may make observations about a person's driving, speech, balance, appearance, behavior, or other circumstances.
An officer may also request field sobriety exercises during an investigation. Chemical testing is a separate issue.
Florida's implied-consent statute provides for approved breath testing after a lawful arrest under specified circumstances when an officer has reasonable cause to believe the person was driving or in actual physical control while under the influence of alcohol. Florida law also contains provisions governing blood and urine testing in particular circumstances.
The legality, administration, maintenance, and evidentiary use of a particular test can become important issues in a DUI defense.
What Happens if You Refuse a Breath, Blood, or Urine Test?
Refusing a lawfully requested chemical test can have consequences separate from the criminal DUI case.
Under Florida's administrative suspension statute, a first qualifying refusal can result in a one-year driver's-license suspension, while a subsequent qualifying refusal can result in an 18-month suspension. The statute also provides procedures for challenging an administrative suspension.
A refusal does not automatically prove that someone was driving under the influence. It may, however, create additional legal and driver's-license issues.
Because refusal cases can involve both criminal and administrative proceedings, anyone facing this situation should obtain individualized legal advice promptly.
Does Eating Food, Drinking Coffee, or Taking a Cold Shower Lower Your BAC?
Common attempts to “sober up” should not be relied upon to make driving safe.
Food may affect how alcohol is absorbed when consumed before or while drinking, but eating afterward does not instantly remove alcohol already in the body. Coffee may make someone feel more alert without eliminating the alcohol responsible for impairment.
Cold showers, exercise, and similar strategies likewise should not be treated as ways to make a person legally safe to drive.
If there is any question about impairment, the safer choice is not to drive.
What Should You Do if You Have Been Arrested for DUI in Florida?
After a DUI arrest, avoid trying to determine the strength of the case simply from the number of drinks you consumed. DUI cases can involve many different forms of evidence, and a breath-test number is only one possible part of the case.
You have the right to remain silent and the right to consult a criminal defense attorney. A Florida DUI defense lawyer can review issues such as:
- The legal basis for the traffic stop
- The officer's observations
- Field sobriety evidence
- Breath, blood, or urine testing
- Whether testing procedures were properly followed
- Video evidence
- Statements attributed to the driver
- Administrative driver's-license issues
A charge is an accusation, not a conviction, and the prosecution has the burden of proving its case.
Facing a DUI Charge in St. Petersburg?
Knowing Florida's 0.08 threshold is useful, but a DUI case cannot be reduced to a chart showing how many drinks a person had. The state may rely on chemical-test results, officer observations, video, statements, and other evidence.
If you have been arrested for DUI in St. Petersburg or Pinellas County, Morris Law Firm can discuss your circumstances and the options available to you.
Call (727) 388-4736 to speak with the firm about your case.
Frequently Asked Questions About Florida’s DUI Limit
Is .08 the Legal Limit in Florida?
For most adult motorists, a blood- or breath-alcohol level of 0.08 or higher is one statutory basis for DUI. Florida also permits a DUI charge based on impairment of normal faculties, so a person can potentially face DUI allegations without a test result of 0.08 or higher.
Can You Drive After One Drink in Florida?
There is no rule guaranteeing that one drink—or any specific number of drinks—is safe for every driver. Alcohol affects people differently, and Florida DUI law is not based solely on counting drinks.
Can You Be Arrested for DUI if You Blow Under .08?
Potentially, yes. Florida law allows DUI charges based on impairment of normal faculties in addition to the 0.08 BAC or breath-alcohol standard.
Is .05 Over the Legal Limit in Florida?
A 0.05 BAC is below the 0.08 per se threshold for most adult drivers, but a number below 0.08 does not necessarily prevent a DUI charge based on other evidence. Florida's evidentiary presumptions also distinguish between results of 0.05 or less and results above 0.05 but below 0.08.
What Is the Limit if You Are Under 21 in Florida?
Florida's zero-tolerance law provides for administrative consequences when a driver under 21 has a blood- or breath-alcohol level of 0.02 or higher. That rule should be distinguished from the separate criminal DUI statute.
Can I Challenge a Breath Test Result?
Depending on the circumstances, a defense attorney may examine whether a test was lawfully requested, whether required procedures were followed, and whether the evidence is reliable and admissible. The availability and strength of a challenge depend on the facts of the individual case.
