The Bargain You Made by Driving
Florida’s implied consent law, section 316.1932, rests on a simple trade. The state lets you use its roads, and in return you are deemed to have agreed in advance to a lawful chemical or physical test of your breath, urine, or blood if you are ever arrested for DUI on probable cause. You never sign anything. Consent is implied by the act of driving, which is why the officer’s job at the station is to read you the consequences of refusing rather than to ask whether you agree.
Two limits matter. The consent only attaches to a lawful arrest, so if the stop or the arrest was bad, the consent never properly arose, which is the root of most refusal defenses. And the test has to be one the statute authorizes, requested in the right way for what the officer suspects.
Breath, Urine, or Blood
The three tests are not interchangeable, and the officer does not get to pick freely. A breath test is the standard request after an arrest for alcohol impairment. A urine test is requested after an arrest where the officer suspects a controlled substance or a drug rather than alcohol. Blood is the narrow case: it is generally reserved for crashes involving serious bodily injury or death under section 316.1933, where the law allows a draw under a warrant or under the statute, and it is also available where a breath or urine test is impractical, such as when an injured driver is already at a hospital.
| Test | Typical trigger | Governing statute |
|---|---|---|
| Breath | Arrest where the officer suspects alcohol impairment | 316.1932 |
| Urine | Arrest where the officer suspects drugs or a controlled substance | 316.1932 |
| Blood | Serious bodily injury or death, or where breath and urine are impractical | 316.1933 |
A blood draw in a serious-injury or death case can be obtained by warrant and is treated differently from a breath or urine refusal.
The Warning the Officer Must Read
Before a refusal can count, the officer is supposed to advise you of what refusing means. After Trenton’s Law, that warning grew. The officer must now tell you that refusing a lawful breath or urine test will suspend your license for one year, or eighteen months on a second refusal, and that the refusal is itself a crime, a second-degree misdemeanor for a first refusal and a first-degree misdemeanor for a second. The warning is not a formality. It is an element, and when it is missing or wrong, the refusal can be thrown out.
When the Warning Is Wrong, the Refusal Can Fall
Florida courts have suppressed refusals and breath results where the officer’s advice was inaccurate or coercive, because a decision made on bad information is not a knowing and voluntary one. A driver wrongly told his license would be suspended when the statute did not apply had his consent thrown out in State v. Burnett, 536 So. 2d 375 (Fla. 2d DCA 1988). Where consent is the only basis for the test, the record has to show the consent was freely given, a point the First District made in State v. Polak, 598 So. 2d 150 (Fla. 1st DCA 1992). Trial courts have suppressed results where officers dangled a hardship license as a reward for submitting, as in State v. Forman, 10 Fla. L. Weekly Supp. 47 (Fla. 11th Cir. Ct. 2002), and State v. Perdue, 17 Fla. L. Weekly Supp. 186 (Fla. 16th Cir. Ct. 2010). The wording the officer used is always worth examining.
Field Sobriety Exercises Are a Different Thing
One point of confusion is worth clearing up. Implied consent covers the chemical tests of breath, urine, and blood. It does not cover the roadside field sobriety exercises, the walk-and-turn, the one-leg stand, and the eye test, which are voluntary in Florida and carry no automatic license penalty for declining. Many people refuse the wrong thing, or submit to the wrong thing, simply because no one explained that the roadside exercises and the station test are governed by different rules.
Related: Refusal as a crime, Defenses to a refusal, Your right to an independent test, and Implied consent and refusal.
I started out as an Assistant Public Defender in Florida’s Thirteenth Judicial Circuit, in Tampa, and today I am one of six ACS-CHAL Forensic Lawyer-Scientists in Florida. A refusal case runs on two tracks at once, your driving privilege and a separate criminal charge, and I fight both, demanding the formal review hearing and testing whether the stop, the arrest, and the implied consent warning hold up. Learn more about my background.
Common Questions
What is Florida's implied consent law?
Section 316.1932 provides that by driving in Florida you are deemed to have consented to a lawful test of your breath, urine, or blood if you are arrested for DUI on probable cause. Consent is implied by driving, so the officer reads you the consequences of refusing rather than asking your permission.
Does the officer have to read me a warning before I refuse?
Yes. The officer must advise you that refusing a lawful breath or urine test suspends your license for one year, or eighteen months on a second refusal, and, since October 1, 2025, that the refusal is also a crime. If the warning was missing or inaccurate, the refusal can sometimes be suppressed.
Can I be forced to give blood?
In most DUI stops, no. Blood is reserved largely for cases involving serious bodily injury or death under section 316.1933, where a sample can be drawn under a warrant or under that statute, and where breath or urine testing is impractical. A routine alcohol arrest calls for a breath test.
Are field sobriety exercises covered by implied consent?
No. The roadside exercises are voluntary in Florida and are not part of implied consent, so declining them does not by itself suspend your license. The chemical breath, urine, and blood tests at the station are the ones implied consent governs.
What happens if the officer gave me wrong information?
It can matter a great deal. Florida courts have suppressed refusals and test results where the officer's advice was inaccurate or coercive, on the reasoning that a choice made on bad information is not knowing and voluntary. The exact words the officer used are worth reviewing in every case.
This page is general information about Florida law, not legal advice, and it does not create an attorney-client relationship. Florida’s implied consent law is section 316.1932, Florida Statutes; the criminal refusal offense is section 316.1939; blood testing in serious-injury and death cases is governed by section 316.1933; the impairment presumptions are in section 316.1934; and the administrative suspension process is in sections 322.2615 and 322.2616. Trenton’s Law (House Bill 687, Chapter 2025-121, Laws of Florida) took effect October 1, 2025, and these rules continue to change, so confirm current requirements with an attorney. Every case turns on its own facts, and past results do not guarantee a similar outcome.
