You may not have known it when you got in the car, but all Florida drivers provide the state with consent to administer lawful blood and urine tests to determine blood alcohol content (BAC). You gave the police your implied consent to administer BAC tests just by getting behind the wheel. However, your consent is limited by law. Here, experienced Fort Lauderdale drunk driving defense lawyer Robert David Malove explains what you've agreed to, what happens if you refuse a BAC test, and what some of your defenses may be if you believe your BAC test results are inadmissible in court.

As an experienced South Florida DUI lawyer, Robert David Malove has helped thousands of clients navigate the complexities of implied consent law. Understanding what you've agreed to, what happens if you refuse testing, and what defenses may be available can be crucial for protecting your rights and minimizing the consequences of a DUI arrest.

What Is Florida's Implied Consent Law?

Florida Statute Section 316.1932 establishes that by driving on Florida roads, you automatically consent to chemical testing to determine alcohol or drug impairment if lawfully arrested for DUI.

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What You Agree to When You Drive in Florida

According to Florida Statute Section 316.1932, if you're driving a car in the state, you automatically agree to take a chemical or physical test to check for alcohol or other substances in your system if you are lawfully arrested for a crime involving drunk driving or being under the influence of drugs.

Automatic Agreement: Simply by obtaining a Florida driver's license or driving on Florida roads, you provide implied consent to:

  • Breath testing for alcohol detection
  • Urine testing for drug detection
  • Blood testing under specific circumstances

No Express Consent Required: Unlike explicit consent, implied consent doesn't require verbal or written agreement. The act of driving itself constitutes legal consent under Florida law.

Recent Legislative Updates (2025)

Recent changes to Florida's implied consent law include:

  • Enhanced penalties for repeat refusals
  • Expanded testing for controlled substances
  • Improved procedures for medical exceptions
  • Clarified protocols for unconscious drivers

Understanding Your Blood Alcohol Content (BAC) Rights

Florida's implied consent law addresses explicitly blood alcohol testing procedures and requirements.

Legal BAC Limits in Florida

Standard Drivers:

  • 0.08%: Legal limit for drivers 21 and older
  • 0.04%: Legal limit for commercial drivers
  • 0.02%: Legal limit for drivers under 21

Enhanced Penalties:

  • 0.15% or higher: Enhanced penalties and longer license suspensions
  • 0.20% or higher: Extended ignition interlock requirements

Current Florida DUI Statistics

Recent data from the Florida Department of Highway Safety and Motor Vehicles shows:

  • 33,000+ DUI arrests statewide annually
  • Broward County: 3,314 arrests in 2024
  • Miami-Dade County: 4,200+ annual arrests
  • Palm Beach County: 2,800+ annual arrests

Of these arrests, approximately 15-20% involve refusal to submit to chemical testing, highlighting the importance of understanding implied consent consequences.

Breath Tests

For alcohol tests, a police officer can ask you to blow into a device that checks your breath. The officer may only administer a breathalyzer test if the officer has probable cause to believe that you are under the influence of alcohol.

Urine Tests

For drug tests, the law allows the police to request a urine sample if they believe you were driving under the influence of drugs. As with a breathalyzer test, the officer can only conduct a urine test incidental to an arrest if the officer has probable cause to believe that you were under the influence of a controlled substance. Urine tests may be run at any facility equipped to administer these tests.

Blood Tests 

Florida law only allows police to compel a blood test if one of the following three things is true:

  • A breath or urine test is impractical or impossible
  • There is probable cause to believe your DUI caused death or serious injury
  • You freely and voluntarily consented to a blood test

Otherwise, a blood test should not be used.

What Happens If You Choose to Refuse a Blood Alcohol Content Test

You could face significant penalties for refusing a lawful blood or urine test.

License Suspension

Your first refusal to submit to a breath, urine, or blood test, as required by law, can result in a driver's license suspension of one year. Subsequent refusals can result in 18-month license suspensions.

Jail Time and Fines

A second refusal to submit to an alcohol or drunk test, as required by Florida's implied consent law, can result in Class 1 misdemeanor charges. The potential legal consequences for a Class 1 misdemeanor include up to one year in jail or 12 months of probation and a fine of up to $1,000.

Evidence in a Criminal DUI Case

In court, your refusal to take these tests can be used as evidence against you in a criminal drunk driving or drugged driving case.

Implied Consent Defenses

You provided implied consent to lawfully administered breath, urine, and blood tests if you are arrested for drunk or drugged driving. However, you did not provide unlimited consent for the police to conduct tests any way they want.

If you refused a test and the state claims that you violated Florida's Implied Consent Law, you may have valid defenses that could help you avoid the harsh penalties described above. Specifically, your DUI defense lawyer should consider:

  • Whether the police had probable cause to stop you for drunk driving and request testing
  • If you really refused the test
  • Whether the police provided you with an implied consent warning
  • Whether you were threatened or coerced
  • For blood test cases, whether a breath or urine test was possible and whether the police had probable cause to believe you caused an accident resulting in death or injury

Of course, implied consent is just one piece of your drunk driving defense case. You may also face significant DUI penalties if you are convicted of driving under the influence of alcohol or drugs in Florida.

Call (954) 861-0384 or contact us online for immediate assistance.