Marijuana and DUI Laws in Georgia

The Basics of Marijuana DUI Laws in Georgia

Many drivers are surprised by how strict the Marijuana and DUI Laws in Georgia are. Under O.C.G.A. § 40-6-391, it is illegal to drive if marijuana or any drug makes you less safe to operate a vehicle. Georgia also allows prosecutors to proceed if a blood or urine test detects marijuana or its metabolites. In practice, this can act like a zero-tolerance rule.

Here is what that means in plain terms:

• There is no set “legal limit” for THC like the 0.08% BAC standard for alcohol.

• Officers look at your driving behavior, your performance on field sobriety tests, and any chemical test results.

• Even if you are not high at the time of driving, THC and metabolites can remain in your body for days or weeks. A positive test can still form the basis of a charge.

This is different from alcohol in two key ways. First, there is no bright-line number that defines impairment for marijuana. Second, urine tests often detect metabolites that are not active and do not measure current impairment. These differences often fuel confusion for many people trying to understand the laws after a traffic stop.

You might be facing charges after using marijuana in another state, you may be worried about a positive test from legal CBD or hemp products, or you could be trying to understand the risks of prescription or medical cannabis products in Georgia. THC can linger in your system. So can metabolites from CBD products that contain trace THC. That mix of science and law makes this area feel unfair or unclear for many drivers.

Legal THC Limits and Measuring Impairment in Georgia

Unlike alcohol, there is no legal THC limit in Georgia. The state has not set a numeric threshold that automatically defines impairment. Instead, Marijuana and DUI Laws in Georgia rely on observations and test results that must be interpreted in context. That creates both risk and opportunity: risk because even small amounts can lead to charges, and opportunity because the state still has to prove its case.

Field Sobriety Tests and DRE Evaluations

When officers suspect marijuana impairment, they usually start with field sobriety tests. Some agencies also call in a Drug Recognition Expert (DRE). A DRE checks your eyes, pulse, blood pressure, muscle tone, and behavior to look for signs consistent with drug use. These methods are not perfect. They rely on human judgment and can be influenced by medical issues, fatigue, nervousness, and environmental conditions.

We examine whether the tests were explained and administered correctly, whether the officer is trained and certified, and whether the conditions of the stop affected your performance or the evaluation.

Chemical Testing: Blood and Urine

Blood tests can detect active THC and sometimes provide a closer look at recent use. Even then, the presence of THC does not always mean you were less safe at the time of driving.

Urine tests, on the other hand, detect metabolites that can linger for days or weeks. These metabolites are inactive and do not prove current impairment.

Both tests are only as reliable as the procedures used to collect, preserve, and analyze the samples. Lab documentation, chain of custody, and testing methods are all critical.

Georgia’s implied consent law allows officers to request a chemical test after a DUI arrest. You can refuse, but doing so will trigger administrative penalties, including license suspension. You also have a short deadline, generally 30 days, to request an administrative hearing to challenge the suspension.

Why You Might Need an Attorney

If you have been arrested or investigated for a marijuana DUI, you are likely frightened and unsure of what to do next. We understand. Marijuana and DUI Laws in Georgia are strict, and the room for error during an investigation is large. An experienced defense team can make a real difference.

Here’s what we can do:

Challenging Stops, Tests, and Procedures

We review every step of your case, including:

• The legality of the initial stop

• How field sobriety tests were explained and administered

• Whether implied consent warnings were read properly

• The collection, storage, and analysis of blood or urine samples

• The chain of custody and lab documentation

Because there is no set THC limit, the state’s case often turns on how convincing its procedures and interpretations appear to a judge or jury. We focus our defense where the state’s proof is weakest.

Defense Strategies That Fit the Facts

We cannot promise results. We can promise to use every tool the law allows. Depending on your case, we may:

• Challenge the officer’s observations and conclusions about impairment

• Question DRE assessments and field sobriety test reliability

• Attack lab methods and the meaning of metabolite results

• Present medical or alternative explanations for noted “signs” of impairment

• Seek suppression of evidence after constitutional violations

Working Toward Reduced or Dismissed Charges

Our goals are simple: protect your record, your freedom, and your license. When dismissal is possible, we pursue it. When a reduction is warranted, we negotiate charges that more accurately reflect the facts. When a trial is the right path, we prepare for it. Throughout, we keep you informed, prepared, and supported.

Why Local Experience Matters

Every courthouse and every prosecutor’s office has its own rhythm. Our Atlanta-based team is familiar with Georgia’s courts and how Marijuana and DUI Laws in Georgia are applied in real cases. That local insight helps us tailor strategy and anticipate challenges, giving you a stronger defense from day one.

Protect Your Future With Farnsworth & Murphy, LLC

Marijuana and DUI Laws in Georgia allow the state to prosecute based on impairment or on the presence of THC and metabolites. There is no numeric THC limit, and tests can detect use long after any “high” has passed. The penalties are tough. License suspensions and criminal records can impact your employment, education, travel, and family life. You deserve clear information, a targeted defense, and an advocate who will fight for you at every step.

At Farnsworth & Murphy, LLC, we bring experience, steady guidance, and strong courtroom skills to every case. We investigate the stop, the tests, and the lab work. We challenge assumptions that presence equals impairment. We protect your rights and strive to achieve a favorable outcome for your specific situation. We cannot guarantee an outcome, but we can promise to put our skill, preparation, and integrity to work for you.

If you are ready to talk about your case, we are ready to listen. Let Farnsworth & Murphy, LLC stand with you and fight for it. Contact us today and let’s get started.