Deciding whether or not you can refuse a field sobriety test is one of the most critical choices you will make during a DUI stop. While the flashing lights and police presence are intimidating, knowing your legal rights can be the difference between a dismissed case and a lifelong criminal record. In most cases, these roadside tests are voluntary, and understanding the nuances of the law is essential for protecting your future.
What Exactly are Field Sobriety Tests (FSTs)?
Field Sobriety Tests (FSTs) are physical and cognitive exercises used by police officers to determine if a driver is impaired by alcohol or drugs. Officers use these tests to build “probable cause” to justify a DUI arrest.
The “Big Three”: Standardized Field Sobriety Tests (SFSTs)
The National Highway Traffic Safety Administration (NHTSA) has validated three specific tests that are most commonly used:
- Horizontal Gaze Nystagmus (HGN): The officer moves a pen or finger in front of your eyes. They are looking for “nystagmus,” which is an involuntary jerking of the eyeball that can become more pronounced when a person is intoxicated.
- The Walk-and-Turn: You are asked to take nine steps, heel-to-toe, along a straight line, turn on one foot, and return. The officer looks for eight signs of impairment, such as losing balance or starting before the instructions are finished.
- The One-Leg Stand: You must stand with one foot about six inches off the ground while counting aloud. Swaying, using arms for balance, or putting the foot down are marked as “clues” of intoxication.
Non-Standardized Tests: What Else Officers Use
In addition to the “Big Three,” officers may use tests that are not scientifically validated by the NHTSA. These include the Finger-to-Nose test, reciting the alphabet without singing, or counting backward. Because these tests lack standardized scoring, they are even more subjective and easier for a skilled defense attorney to challenge in court.
The Science vs. The Reality: Accuracy Rates
Even when performed perfectly by an officer, FSTs are not 100% accurate. Research shows that the One-Leg Stand is only about 83% accurate, and the Walk-and-Turn is roughly 79% accurate. Factors like uneven pavement, high winds, passing traffic, and even the natural anxiety of being pulled over can cause a completely sober person to fail these tests.
Can I Lawfully Refuse a Field Sobriety Test?
The short answer is: Yes. In almost all circumstances, you have the right to refuse to perform these physical coordination tests.
Voluntary vs. Mandatory: Understanding the Law
Unlike a driver’s license check or providing your registration, field sobriety tests are generally voluntary. They are designed to help the officer gather evidence against you. You are not legally required to help the police build a case for your own arrest.
Implied Consent Laws: Field Tests vs. Chemical Tests
A common point of confusion is the “Implied Consent” law. This law states that by driving on public roads, you agree to submit to a chemical test (breath or blood) after you have been lawfully arrested. However, this does not apply to the physical roadside tests. You can legally refuse the “walk and turn” without the automatic license suspension that comes from refusing a post-arrest breathalyzer.
Exceptions to the Rule: When You Can’t Refuse
There are two main groups who usually cannot refuse these tests without immediate penalty:
Drivers Under 21: Most states have “Zero Tolerance” laws that require underage drivers to submit to testing.
DUI Probationers: If you are already on probation for a prior DUI, a condition of your release often includes mandatory submission to any sobriety test requested by an officer.
The Advantages of Refusing Roadside Tests
Refusing these tests is often the smartest move for your legal defense. Here is why:
Preventing the Creation of “Subjective” Evidence
FSTs are graded by the officer’s personal observation. If the officer has already decided you are drunk, they are more likely to “see” clues of impairment. By refusing, you prevent the prosecutor from having a video of you stumbling or failing to follow instructions.
Limiting the Officer’s Probable Cause for Arrest
To arrest you, an officer needs “probable cause.” If you perform the tests and “fail,” you have given them exactly what they need. While they may still arrest you based on other factors, they will have much less evidence to justify that arrest in court.
Avoiding Errors Caused by Medical Conditions or Physical Injuries
Many people have physical issues that make FSTs impossible to pass, regardless of sobriety. If you have back problems, knee injuries, inner ear issues, or are over age 65 or significantly overweight, you should politely decline the tests. These conditions can mimic intoxication on camera.
The Potential Downsides of Refusal
While you have the right to refuse, it is important to understand the consequences.
Will I Be Automatically Arrested?
If you refuse the FSTs, there is a very high chance the officer will arrest you anyway. However, an arrest is not a conviction. It is often better to be arrested with less evidence against you than to be arrested after providing a video of yourself failing coordination tests.
Can My Refusal Be Used Against Me in Court?
In some jurisdictions, the prosecutor can tell the jury that you refused the tests. They will argue that you refused because you “knew you were guilty.” However, a strong defense attorney can counter this by explaining that the tests are unreliable and that you were simply exercising your constitutional rights.
The “Totality of Circumstances”: Other Evidence Officers Use
The police don’t just look at FSTs. They also look for:
- The smell of alcohol on your breath.
- Slurred speech or bloodshot eyes.
- Fumbling with your wallet.
- The original reason they pulled you over (swerving or speeding).
Refusing the Portable Breath Test (PBT) vs. Post-Arrest Testing
It is vital to distinguish between the two types of breathalyzers.
Roadside Handheld Breathalyzers: Are They Voluntary?
The small, handheld device an officer asks you to blow into on the side of the road is called a Preliminary Alcohol Screening (PAS) or Portable Breath Test (PBT). In most cases, this is voluntary for adults not on probation. The results are often not even admissible in court; they are only used to justify an arrest.
The Consequences of Refusing an Evidentiary Chemical Test (Blood/Breath/Urine)
Once you are at the police station or in an ambulance, the “Implied Consent” rule kicks in. Refusing this chemical test usually leads to an automatic one-year driver’s license suspension, even if you are eventually found “Not Guilty” of the DUI.
How to Politely Refuse: A Step-by-Step Guide
The way you refuse is just as important as the refusal itself. Being aggressive can lead to “resisting arrest” charges.
What to Say to the Officer
You do not need to be argumentative. Use a simple, polite script: “Officer, I am aware that these tests are voluntary. I am choosing to exercise my right to decline them. I would like to speak with my attorney.”
Maintaining Your Rights Without Being Belligerent
Keep your hands visible and remain calm. Do not engage in a debate about the law. If the officer asks “Why?” you can simply repeat that you are following legal advice.
Should I Refuse? (The Expert Verdict)
Generally, legal experts suggest refusing field sobriety tests. These tests are designed for you to fail. However, every situation is unique. If you have already taken the tests, don’t panic—an experienced lawyer can often find technical errors in how the tests were administered to get the evidence thrown out.
Speak with a DUI Defense Attorney Today
At the Law Office of Logan Noblin, APC, we understand that a DUI stop is a high-stakes battle. Logan Noblin, a former college boxer and “Attorney of the Year,” brings a fighter’s mentality to the courtroom. We don’t just manage cases; we build winning narratives.
How a Lawyer Challenges FST Results in Court
We look for technical errors. Did the officer hold the pen too close during the HGN test? Was the ground level? Was the officer properly certified? By exposing these flaws, we can often get your charges reduced or dismissed.
Request a Free Case Evaluation
If you are facing DUI charges, you need a strategist and a warrior in your corner. Contact the Law Office of Logan Noblin, APC today to protect your rights and your future.
Frequently Asked Questions (FAQ)
Can I lose my license for refusing a field sobriety test?
In most states, you will not lose your license for refusing the physical exercises (like standing on one leg). However, you will likely lose your license for refusing the chemical breath or blood test at the station.
Is a field sobriety test mandatory if I’m on probation?
Yes. If you are currently on probation for a prior DUI, one of the conditions is usually that you must submit to any sobriety test requested by an officer.
Does “Implied Consent” mean I have to do the walk-and-turn?
No. Implied consent generally applies only to the chemical testing of your breath or blood after a lawful arrest has been made.
What if I have a medical condition that affects my balance?
This is a major reason to refuse. Conditions like vertigo, inner ear infections, or joint pain can make you look impaired when you are perfectly sober.
Can the police force me to take a blood test?
In some cases, if you refuse a chemical test, the police can get a rapid warrant from a judge to force a blood draw.
Will refusing a test make me look guilty?
The police might say it does, but you are simply protecting yourself from a subjective and unreliable test. It is better to deal with the “appearance” of guilt than a video of a failed test.
Should I talk to the police during the stop?
Beyond providing your name, license, and insurance, you have the right to remain silent. You should politely decline to answer questions like “How much have you had to drink tonight?”
