Thomas C. Grajek | August 7, 2026 | DUI
During a DUI stop, an officer may ask you to step out of your vehicle and perform several roadside exercises. You may wonder whether you have to comply or whether refusing is the better choice. There is no answer that is right for every driver because either decision can affect the investigation and a later criminal case.
Field sobriety exercises are different from breath, blood, and urine tests. Refusing the exercises does not necessarily stop an arrest, and prosecutors may be able to use the refusal as evidence against you.
What Is a Field Sobriety Test?
Field sobriety tests, commonly called field sobriety exercises in Florida, are physical and mental tasks officers use when investigating suspected impairment.
The three standardized exercises developed by the National Highway Traffic Safety Administration are:
- Horizontal gaze nystagmus: The officer watches the driver’s eyes while the driver follows a moving object.
- Walk-and-turn: The driver takes heel-to-toe steps along a line, turns, and walks back.
- One-leg stand: The driver raises one foot and balances while counting aloud.
Officers may also request other tasks, such as reciting the alphabet, touching a finger to the nose, or estimating the passage of time. They observe whether the driver follows instructions, maintains balance, and completes each exercise as directed.
Are Field Sobriety Tests Mandatory in Florida?
An officer who reasonably suspects DUI may direct a driver to perform field sobriety exercises as part of the investigation. However, officers cannot physically force a driver to complete them.
Florida’s implied consent law applies to breath, urine, and certain blood tests requested under legally defined circumstances. It does not impose the same automatic driver’s license suspension for refusing roadside sobriety exercises.
That does not mean refusing is free from consequences. Florida courts have allowed evidence of a refusal to be introduced in a DUI case under some circumstances.
What Happens if You Refuse a Field Sobriety Test?
Refusing field sobriety exercises does not require the officer to let you leave.
The officer may arrest you based on other evidence, such as:
- Erratic or unsafe driving
- The smell of alcohol or marijuana
- Slurred speech or bloodshot eyes
- Trouble producing requested documents
- Statements about drinking or drug use
- Open containers or drugs visible inside the vehicle
The officer may also consider your refusal when deciding whether there is probable cause for an arrest. Prosecutors may later argue that the refusal showed consciousness of guilt, although its admissibility depends on the circumstances surrounding the request and refusal.
Why Field Sobriety Tests Are Not Always Reliable
Poor performance does not always mean a person is impaired.
Several outside factors may affect the results, including:
- Injuries, arthritis, balance problems, or neurological conditions
- Age, weight, footwear, or limited mobility
- Uneven pavement, roadside debris, or poor lighting
- Rain, wind, traffic, or other distractions
- Fatigue, anxiety, confusion, or nervousness
- Unclear instructions or improper administration
The officer’s interpretation also plays a major role. Body-camera footage may show that the driver followed instructions or performed better than the written report claims.
What Should You Do During a Florida DUI Stop?
A DUI stop can move quickly, and anything you say or do may become part of the officer’s report or later be used as evidence.
During the stop, you should:
- Remain calm and polite, and do not argue with the officer or physically resist.
- Provide your driver’s license, registration, and proof of insurance when asked.
- Avoid volunteering information about where you were, what you drank, or when you last consumed alcohol.
- Do not debate the law on the roadside, as questions about the stop, arrest, or testing procedures can be addressed later.
- Remember that refusing field sobriety exercises is different from refusing a lawful breath, urine, or blood test, which may carry separate license and criminal consequences.
- Contact a criminal defense attorney after an arrest to review the stop, the officer’s observations, any test results, and available video footage.
Your conduct during the stop may affect the evidence available in a later DUI case.
Contact Grajek Criminal Defense Attorneys to Schedule a Confidential Consultation With a Lakeland Criminal Defense Attorney
Field sobriety exercises are only one part of a DUI investigation. The officer must still have a lawful basis for the stop and sufficient evidence to support an arrest. Problems with the instructions, testing conditions, police report, or body-camera footage may affect the case.
For more information, contact the Lakeland DUI attorneys at Grajek Criminal Defense Attorneys for a confidential consultation. We serve all areas in Lakeland, Polk County, and throughout Florida.
Visit our convenient location:
Grajek Criminal Defense Attorneys
112 E Poinsettia St, Lakeland, FL 33803
(863) 688-4606
