Can Field Sobriety Tests Be Challenged in Florida Courts?
Field sobriety tests are commonly used by law enforcement officers to determine whether a driver is impaired. However, these tests are not always accurate, and many factors can affect a driver’s ability to perform them successfully. Challenging field sobriety tests in court is possible, especially with the help of an experienced DUI defense attorney.
If you have been arrested based on field sobriety test results, understanding how these tests work and their potential flaws can help you build a strong defense.

What Are Field Sobriety Tests?
Field sobriety tests are physical and cognitive exercises administered by law enforcement officers during a DUI investigation. The most commonly used standardized field sobriety tests include:
- Horizontal gaze nystagmus test – Officers check for involuntary eye movements when following an object.
- Walk and turn test – Drivers must walk a straight line, turn, and return without losing balance.
- One leg stand test – The driver stands on one leg for a set period to assess coordination.
These tests are designed to help officers establish probable cause for a DUI arrest, but they are not foolproof.
How Accurate Are Field Sobriety Test Results?
Studies have shown that field sobriety tests are not always reliable indicators of impairment. Factors unrelated to alcohol consumption can cause poor performance, leading to false positives in DUI cases.
Factors That Can Affect Test Accuracy
- Environmental factors – Poor lighting, uneven surfaces, or bad weather can affect balance and coordination.
- Medical conditions – Neurological disorders, injuries, or vertigo can impact test performance.
- Officer’s interpretation – Test results rely on subjective assessments by the arresting officer.
- Physical limitations – Age, weight, or disabilities can make it difficult to perform field sobriety exercises.
- External factors – Nervousness, fatigue, or wearing certain footwear can also impact results.
How to Challenge Field Sobriety Test Results in Court
1. Questioning the Officer’s Training and Procedures
A DUI defense attorney can investigate whether the officer followed proper procedures when administering field sobriety tests. If the officer fails to conduct the tests correctly, the results may be deemed unreliable.
2. Using Medical Evidence
Medical records or expert testimony can be used to prove that medical conditions, rather than intoxication, affected the driver’s performance.
3. Arguing That External Factors Influenced the Results
External factors such as road conditions, weather, or fatigue can be presented as evidence to challenge the accuracy of test results.
4. Demonstrating That the Tests Are Inherently Unreliable
Defense attorneys may use studies and expert witnesses to show that standardized field sobriety tests do not always provide conclusive proof of impairment.
Can Challenging Field Sobriety Tests Help Get DUI Charges Dismissed?
Yes, successfully challenging field sobriety test results can weaken the prosecution’s case. If the court finds that the tests were unreliable or improperly administered, the evidence may be excluded, making it harder for prosecutors to prove impairment.

Get Legal Help for Your DUI Case
If you have been charged with a DUI based on field sobriety exercises, you have the right to challenge the evidence against you. An experienced DUI defense attorney can help you fight the charges and protect your driving privileges.
Learn more about challenging field sobriety tests in Florida courts. Call Hersem Law at 813-251-7291 (Tampa) or 727-384-4357 (Clearwater) to schedule your free consultation. You can also reach us anytime through our contact page. Let us help you build a strong DUI defense.
FAQ
1. Are field sobriety tests required in Florida?
No, field sobriety tests are voluntary. Drivers have the right to refuse them, though refusal may lead to further DUI investigations.
2. Can a medical condition cause poor performance on a field sobriety test?
Yes, conditions such as vertigo, neurological disorders, or injuries can affect test performance and may be used as a defense in court.
3. Can environmental factors impact field sobriety test results?
Yes, poor lighting, uneven roads, bad weather, and fatigue can all influence a driver’s ability to perform these tests accurately.
4. How can an attorney challenge field sobriety tests in court?
A DUI defense attorney can argue improper administration, officer bias, medical conditions, or external factors that may have led to inaccurate results.
5. Can challenging a field sobriety test help get my DUI charges dropped?
If the test results are found to be unreliable, the prosecution’s case may weaken, increasing the chances of getting the charges reduced or dismissed.