A DUI arrest can feel overwhelming, especially when you are unsure what comes next. However, the evidence collected during your stop and arrest plays a critical role in how your case unfolds. Understanding dui defense and how evidence shapes your outcome is the first step toward protecting your rights.
In Fort Pierce and throughout St. Lucie County, law enforcement officers follow specific procedures when making a DUI stop. Because of this, any deviation from those procedures can affect the strength of the prosecution’s case. The evidence they gather — or fail to gather properly — can work in your favor.
At Jonathan Jay Kirschner, Esq., & Associates, LLC, our team has more than 30 years of experience defending clients against DUI charges. We know exactly how to examine the evidence in your case and identify the strongest defense strategies available to you.
Why Evidence Is the Foundation of Every DUI Case
In any DUI case, the prosecution must prove guilt beyond a reasonable doubt. Therefore, the evidence they present is everything. Without solid evidence, their case weakens significantly.
Florida law requires officers to follow strict protocols during a traffic stop and arrest. When those protocols are not followed, the resulting evidence may be challenged or suppressed. As a result, a strong defense often starts with a thorough review of how that evidence was gathered.
Types of Evidence Commonly Used in Fort Pierce DUI Cases
Several types of evidence typically appear in DUI cases in Fort Pierce and surrounding areas like Port St. Lucie, Stuart, and Vero Beach. Each type carries its own strengths and vulnerabilities.
- Field sobriety test results: Officers use standardized tests to assess coordination and balance. However, these tests are highly subjective and can be affected by medical conditions, uneven road surfaces, or nervousness.
- Breathalyzer readings: Breath test machines must be properly calibrated and maintained. If they are not, the results may be unreliable.
- Blood test results: Blood draws must follow strict procedures. Improper handling or storage can compromise the accuracy of results.
- Dashcam and bodycam footage: Video evidence can either support or contradict an officer’s written report. In many cases, it reveals inconsistencies.
- Officer observations: An officer’s notes about your behavior, speech, and appearance are part of the record. These observations are also subject to scrutiny.
How Field Sobriety Tests Can Be Challenged
Field sobriety tests are among the most commonly challenged pieces of evidence in a DUI case. Moreover, they are not foolproof. Many factors can influence a person’s performance that have nothing to do with alcohol or drug use.
For example, a person with an inner ear condition may struggle with the walk-and-turn test. Additionally, poor lighting, wet pavement, or uncomfortable footwear can affect balance. Our attorneys carefully review the conditions under which these tests were administered.
The Standardized Field Sobriety Tests in Florida
Florida law enforcement typically uses three standardized tests. First, officers administer the Horizontal Gaze Nystagmus test, which checks for involuntary eye movement. Next, they use the walk-and-turn test to assess coordination. Then, they conduct the one-leg stand test.
Each test has specific administration requirements. Furthermore, officers must be trained and certified to conduct them properly. If an officer failed to follow the correct protocol, the results may be challenged in court.
Breathalyzer Evidence: More Complex Than It Looks
Many people assume a breathalyzer reading is definitive proof of intoxication. On the other hand, these devices are only as reliable as their maintenance records and the training of the officer using them.
Florida requires regular calibration and maintenance of all breath testing equipment. Additionally, certain medical conditions — such as acid reflux or diabetes — can affect test results. Because of this, our team investigates the full history of the device used in your case.
What We Look for in Breathalyzer Records
When reviewing breathalyzer evidence, our attorneys examine several critical factors. We look at whether the device was properly calibrated before your test. We also check whether the officer followed the required observation period before administering the test.
Furthermore, we review the officer’s certification to operate the device. Any gap in this process can give us grounds to challenge the result. In some cases, a successful challenge can significantly weaken the prosecution’s case against you.
Blood Test Evidence and Chain of Custody
In some DUI cases, especially those involving suspected drug impairment, blood tests are used instead of or in addition to breath tests. However, blood evidence is only reliable when it is handled correctly from start to finish.
The legal concept of “chain of custody” refers to the documented process of how evidence is collected, stored, and transferred. If there is any break in that chain, the integrity of the blood sample may be questioned. As a result, our attorneys scrutinize every step of the blood collection and handling process.
Improper Blood Draw Procedures
Blood must be drawn by a qualified medical professional using approved methods. Additionally, the sample must be stored at the correct temperature and transferred properly to the testing lab. If any of these steps were not followed, we will identify it and bring it to the court’s attention.
Our team works closely with forensic experts and investigators to build a thorough and well-supported defense on your behalf. This collaborative approach has helped many of our clients in Fort Pierce, Jensen Beach, and other communities across the Treasure Coast.
Dashcam and Bodycam Footage as Evidence
Video footage has become one of the most valuable tools in DUI defense. Moreover, it often tells a different story than the officer’s written report. We always request all available footage as part of our case review.
In many cases, dashcam footage shows a driver operating their vehicle normally before the stop. Similarly, bodycam footage may show a driver who appeared calm and steady on their feet, contradicting claims of visible impairment.
When Video Evidence Works in Your Favor
Video can reveal whether the officer had a valid reason to pull you over in the first place. If the stop was not legally justified, any evidence gathered afterward may be suppressed. Therefore, this is one of the first things our attorneys investigate.
Additionally, video footage can expose inconsistencies between what the officer reported and what actually occurred. These inconsistencies can raise reasonable doubt — and reasonable doubt is the cornerstone of a strong DUI defense.
Motions to Suppress: A Powerful Defense Tool
When evidence is gathered in violation of your constitutional rights, your attorney can file a motion to suppress that evidence. This means the court may exclude it from trial entirely. As a result, the prosecution may be left with a much weaker case.
Common grounds for suppression include an unlawful traffic stop, an improper arrest, or the use of a faulty breathalyzer. Furthermore, if your Miranda rights were not read to you at the appropriate time, certain statements you made may also be suppressed.
Our attorneys at Jonathan Jay Kirschner, Esq., & Associates have extensive experience filing and arguing suppression motions in St. Lucie County courts. We know the local judges and prosecutors, and we know how to present these arguments effectively.
If you have been charged with a DUI, do not wait to get help. Contact JKJ today to schedule a consultation with our experienced defense team and start building your case right away.
Frequently Asked Questions About DUI Evidence in Fort Pierce
Can I refuse a breathalyzer test in Florida?
Florida’s implied consent law means that refusing a breathalyzer test carries its own consequences, including license suspension. However, a refusal can sometimes be part of a defense strategy. We recommend speaking with an attorney before drawing any conclusions about your situation.
What happens if the breathalyzer was not properly calibrated?
If the device was not calibrated according to Florida’s requirements, the results may be challenged and potentially excluded from evidence. Our team will request all maintenance and calibration records as part of your defense review.
Can dashcam footage really help my DUI case?
Yes. Video footage often provides an objective view of the stop and arrest. In many cases, it contradicts the officer’s written account and supports the defendant’s version of events.
What is chain of custody, and why does it matter?
Chain of custody refers to the documented handling of evidence from collection to courtroom. If evidence is mishandled at any stage, its reliability can be questioned. This is especially important in cases involving blood test results.
How soon should I contact a DUI defense attorney after my arrest?
You should contact an attorney as soon as possible. Evidence can disappear quickly, and deadlines for challenging certain aspects of your case — such as your license suspension — are time-sensitive. The sooner you act, the better your options.
Protect Your Future With a Strong DUI Defense
A DUI charge is serious, but it is not the end of the road. The evidence in your case tells a story — and our job is to make sure that story is told accurately and completely. From field sobriety tests to blood samples and video footage, every piece of evidence matters.
At Jonathan Jay Kirschner, Esq., & Associates, LLC, our team is available 24 hours a day, seven days a week to serve clients across Fort Pierce, Port St. Lucie, Stuart, and the surrounding Treasure Coast communities. We bring more than 30 years of experience, a commitment to aggressive advocacy, and a deep understanding of St. Lucie County’s courts to every case we handle.
No matter what the circumstances of your arrest, you deserve a thorough and skilled defense. Our attorneys will review every detail of the evidence, identify weaknesses in the prosecution’s case, and fight tirelessly to protect your rights and your future. Do not face this alone — reach out to our team today and take the first step toward a stronger defense.
