Board Certified Tampa
DUI Defense Expert
DUI Defense Expert
DUI Marijuana and Drug DUI Defense in Florida
By W.F. “Casey” Ebsary Jr. | DUI2GO.com
Introduction
If you have been arrested for a DUI involving marijuana or drugs in Florida, you are facing a very different type of case than a traditional alcohol DUI. I handle these cases regularly, and I can tell you that drug-related DUI cases are often more complex, more subjective, and more dependent on law enforcement opinion rather than clear scientific measurements.
Unlike alcohol cases, there is no universally accepted “legal limit” for most drugs, including marijuana. That means the State often relies on officer observations, field sobriety exercises, and so-called Drug Recognition Expert (DRE) evaluations.
Under Florida law, DUI charges involving drugs are prosecuted under the same statute as alcohol DUIs:
👉 https://www.leg.state.fl.us/statutes/index.cfm?App_mode=Display_Statute&URL=0300-0399/0316/Sections/0316.193.html
👉 See also Justia: https://law.justia.com/codes/florida/title-xxiii/chapter-316/section-316-193/
If you are facing one of these charges, I recommend taking immediate action:
👉 Contact me: https://dui2go.com/contact/
👉 Learn more about my background: https://dui2go.com/about/
What Is a DUI Involving Marijuana or Drugs in Florida?
A DUI involving marijuana or drugs occurs when a person is alleged to be driving while under the influence of any controlled substance or chemical substance to the extent that their normal faculties are impaired.
I explain to clients that the law does not require a specific blood concentration level for most drugs. Instead, the State focuses on whether your ability to operate a vehicle was impaired.
This means these cases often depend heavily on subjective observations, which can be challenged in court.
How Is a Marijuana DUI Different From an Alcohol DUI?
Marijuana DUI cases differ significantly from alcohol-based cases. With alcohol, there is a clear legal limit of 0.08 blood alcohol concentration.
With marijuana, there is no universally accepted impairment threshold in Florida. THC can remain in the body long after any impairing effects have worn off, which creates a major issue for the prosecution.
In my experience, this scientific gap often becomes a key defense issue.
What drugs can lead to a DUI charge?
Florida law covers a wide range of substances, not just illegal drugs. DUI charges can involve:
- Marijuana (THC)
- Prescription medications
- Over-the-counter drugs
- Controlled substances such as cocaine or opioids
I often see cases involving legally prescribed medications where the driver did not realize the medication could impair their ability to drive.
What is a Drug Recognition Expert (DRE)?
A Drug Recognition Expert, or DRE, is a law enforcement officer trained to identify signs of drug impairment.
In many cases I handle, a DRE conducts a series of evaluations, including eye examinations, pulse checks, and divided attention tests. The officer then forms an opinion about what type of drug may be involved.
However, these evaluations are subjective and open to challenge. I frequently scrutinize the training, methods, and conclusions of DRE officers in court.
What evidence is used in drug DUI cases?
Drug DUI cases rely on a combination of observations and scientific evidence.
Law enforcement may use field sobriety exercises, officer observations, DRE evaluations, and chemical tests such as blood or urine analysis.
Unlike breath testing in alcohol cases, drug testing is more complicated and often less reliable in proving impairment at the time of driving.
This creates opportunities to challenge the State’s evidence.
Can you be charged even without a positive drug test?
Yes. Florida law does not require a positive chemical test to prosecute a DUI case.
I have handled cases where the State relied entirely on officer observations and DRE testimony. However, these cases are often weaker and more vulnerable to challenge.
Without chemical confirmation, the State must rely heavily on subjective interpretations of behavior.
What are the penalties for marijuana or drug DUI in Florida?
The penalties for drug-related DUI are generally the same as those for alcohol DUI, but the complexity of the case can affect how it is prosecuted.
Typical penalties include:
Up to 6 months in jail for a first offense
Up to $1,000 in fines
Driver’s license suspension
Probation and DUI school
If aggravating factors are present—such as prior convictions, injuries, or property damage—the penalties increase significantly.
How are blood and urine tests used in these cases?
Blood and urine tests are commonly used in drug DUI cases, but they present unique legal and scientific challenges.
Blood tests may show the presence of a drug, but not necessarily impairment at the time of driving. Urine tests are even less precise, as they often detect metabolites rather than active impairment.
I carefully review how these samples were collected, stored, and analyzed to identify potential weaknesses in the evidence.
What defenses are available in DUI drug cases?
Drug DUI cases offer several potential defenses, many of which focus on the reliability of the evidence.
One common defense is challenging the validity of the traffic stop. Another involves attacking the credibility of officer observations or DRE conclusions.
I also examine the timing of drug use, as well as the limitations of chemical testing. In many cases, the presence of a substance does not equate to impairment.
Each case requires a detailed and scientific approach.
Can prescription medication lead to a DUI conviction?
Yes. Even legally prescribed medication can result in a DUI charge if it impairs your ability to drive.
I often represent clients who had no intention of breaking the law and were taking medication as directed. These cases can be particularly frustrating because they involve lawful conduct that leads to criminal charges.
However, the State still must prove impairment beyond a reasonable doubt.
Penalties Comparison Table
| Offense | Classification | Jail Exposure | Fines | License Consequence |
| DUI (Alcohol or Drugs – 1st Offense) | Misdemeanor | Up to 6 months | Up to $1,000 | Suspension |
| DUI with Property Damage | 1st Degree Misdemeanor | Up to 1 year | Up to $1,000 | Suspension |
| DUI Serious Bodily Injury | 3rd Degree Felony | Up to 5 years | Up to $5,000 | Revocation |
| DUI Manslaughter | 2nd Degree Felony | Up to 15 years | Up to $10,000 | Permanent revocation |
Drug DUI Evidence Strength Chart (Conceptual)
| Officer Observation | ■■■■ |
| DRE Evaluation | ■■■■■ |
| Blood Test | ■■■■■■■■ |
| Urine Test | ■■■■■■ |
Watch: Marijuana DUI Explained
Frequently Asked Questions
Can I be convicted of DUI just for having THC in my system?
No, not automatically. The State must prove that your normal faculties were impaired. I often challenge cases where THC was present but there was no evidence of actual impairment at the time of driving.
Are DRE officers always accurate?
No. While they are trained, their evaluations are subjective and can be challenged. I frequently examine their methodology and conclusions to identify inconsistencies.
Can I refuse a blood or urine test?
Refusing a test can lead to license suspension and other consequences under Florida’s implied consent law. However, the legality of the request and the refusal itself can be challenged.
How long do drugs stay in your system?
It depends on the substance. Marijuana, for example, can remain detectable long after impairment has ended. This is one of the key issues in defending these cases.
Is drug DUI harder to prove than alcohol DUI?
In many cases, yes. The lack of a clear legal limit and the reliance on subjective evidence often make drug DUI cases more complex and defensible.