This page was written, edited, reviewed & approved by Brian LaVine following our comprehensive editorial guidelines. Brian LaVine the Founding Partner, 10+ years of legal experience as criminal defense attorney.
A Houston Marijuana DUI attorney can step in fast when you have been arrested for marijuana-impaired driving in Texas, because the State can treat your case as a criminal DWI from the first hour. The clock starts the moment law enforcement officers hand you the paperwork after the traffic stop. LaVine Law Firm at (713) 489-7692 helps Houston drivers respond before the first court date and the ALR hearing deadline.
Texas uses the term DWI, not DUI, for adult impaired-driving charges involving marijuana, THC, cannabis edibles, vape pens, or other controlled substances. People still search for marijuana DUI online, which is why many Houston DWI attorney searches lead to this page. The label matters less than the criminal charge you actually face under Texas Penal Code Chapter 49.
A marijuana DWI charge can threaten your driver's license, criminal record, job, immigration status, insurance rates, and future. Your freedom depends on the steps you take in the first few days after the arrest. Schedule a free consultation with a Houston DWI defense lawyer before you make a single statement to police, prosecutors, or court officials.
LaVine Law Firm can help by challenging the traffic stop, reviewing the evidence related to drug-impaired driving, protecting your driver's license, and building a strong defense strategy. Our criminal defense lawyers focus on Houston DWI and drug-related driving cases under Texas law. We treat every client like a family member who deserves clear answers and aggressive representation.
Our marijuana DUI defense work for Houston clients includes:
Marijuana DWI cases often require a more technical DUI defense than alcohol DWI cases because THC levels do not translate neatly into impairment. We have seen cases dismissed or charges reduced when the prosecution's case relies on weak observations or flawed testing. No law firm can guarantee any specific result, and we never promise dismissal in any DWI case.
In Texas, a marijuana DUI allegation is usually prosecuted as DWI if the State claims the driver lost normal mental or physical faculties because of marijuana or another substance. The DWI offense sits under Texas Penal Code §49.04, which makes it a criminal offense to operate a motor vehicle in a public place while intoxicated. Texas Penal Code §49.01 defines intoxication to include the loss of normal mental or physical faculties due to alcohol, a controlled substance, a drug, a dangerous drug, or a combination.
Marijuana DWI does not require a 0.08 BAC because the issue is drug-related impairment, not alcohol concentration. There is no THC legal limit in Texas DWI cases, which makes these matters both technical and confusing. The State must still prove impairment beyond a reasonable doubt.
Common case triggers in Harris County include:
Each step in this chain creates a chance for the defense to push back. A trained DWI defense lawyer can target weak links in the prosecution's case before they lead to a guilty plea. The earlier you act, the more options you keep.
Marijuana DUI penalties in Houston, T, X can include jail time, fines, probation, license suspension, court costs, drug education, ignition interlock conditions, and a permanent criminal record. Texas handles these penalties under DWI law even when marijuana, not alcohol, is the alleged substance. The exact range depends on your record, the facts, and the level of the charge.
Charge levels under Texas DWI cases include:
Marijuana possession, THC concentrates, vape cartridges, or other controlled substance allegations may create separate drug charges that ride along with the DWI charge. Penalties may depend on prior convictions, accident facts, child passenger allegations, bodily injury, blood test evidence, and whether drugs or alcohol were combined.
A serious offense like intoxication assault or intoxication manslaughter can lead to state prison rather than county jail. Resisting arrest allegations can also be added to the booking paperwork. That is why aggressive representation matters from day one in any Houston DWI case.
A marijuana DUI conviction in Texas can affect you long after jail time, probation, or fines are complete. The collateral consequences often outlast the sentence itself and can significantly impact your daily life. Many clients only realize the full reach of a criminal record when they apply for a new job or housing.
Common collateral consequences of a DWI conviction include:
A DWI conviction involving marijuana can be especially serious for people with healthcare, education, transportation, government, or security-sensitive jobs. Protecting your record, driver's license, employment, and future has to be part of any real defense strategy. Substance abuse issues mentioned in court can also follow you into future cases.
A marijuana DUI defense starts by challenging whether the State can prove actual impairment, not merely marijuana use. The presence of THC in a blood sample does not equal impairment behind the wheel. A criminal defense attorney will look at the entire chain of events, from the traffic stop to the lab report, on a personal level.
Defense strategies in a Houston DWI marijuana case may include:
A defense attorney may file suppression motions, challenge testing evidence, negotiate reduced charges, or prepare the case for trial. Do not plead guilty in a quick courthouse hallway, and do not ignore the 15-day ALR deadline. A valid defense often starts with the first piece of paperwork you receive after the arrest.
Marijuana impairment is harder to prove than alcohol impairment because there is no Texas THC limit equivalent to the 0.08 BAC alcohol threshold. The legal limit for alcohol gives prosecutors a clear number, but no such number exists for marijuana. The State must rely on officer observations, driving behavior, field sobriety tests, admissions, blood tests, and drug recognition testimony.
Defense angles in a marijuana DUI case often include:
A solid defense should compare alleged impairment against video, medical issues, driving facts, and lab evidence. Federal research from the National Highway Traffic Safety Administration on drug-impaired driving shows how complex these cases can become. The gaps between THC presence and real impairment often create reasonable doubt.
Blood tests in marijuana DUI cases can be challenged because a positive THC result does not automatically prove you were impaired while driving. The lab number is one piece of evidence among many in a criminal case. A skilled DWI lawyer reviews every step from the blood draw to the final report.
Items the defense should review in any blood test include:
The defense should compare blood test results with driving behavior, field sobriety test results, officer observations, and body-cam footage. Blood evidence can be important, but it is not automatically conclusive in court. Each gap in the chain creates an opening for the defense.
A Houston marijuana DWI arrest can trigger an ALR hearing process that affects your driver's license separately from the criminal case. ALR stands for Administrative License Revocation, and the Texas Department of Public Safety ALR program handles these matters. The ALR hearing focuses on license suspension, not guilt or innocence in the criminal case.
ALR issues may arise after:
A DWI attorney may challenge whether the stop was legal, whether there was probable cause, whether the officer followed testing procedures, and whether the refusal or test failure was valid. Failing to request an ALR hearing waives your right to contest the suspension. Acting quickly protects your motor vehicle privileges while the criminal case moves through the court system.
A marijuana DUI arrest may also lead to separate drug charges if police claim marijuana, THC concentrate, vape cartridges, edibles, or other controlled substances were found in the car. The DWI case and the related drug case may share evidence but follow different criminal law rules. Each one needs its own defense plan.
Related issues to review with a defense attorney include:
Separate drug allegations can increase pressure in plea negotiations and may affect bond conditions or probation terms. A full defense reviews the entire criminal justice system response, not only the driving allegation. Houston DWI attorneys familiar with Harris County practice can spot links between the two cases.
Choosing the right Houston DWI defense lawyer can significantly impact the favorable outcome of a marijuana DUI case. Credentials matter when your driver's license and criminal record are on the line. When comparing criminal defense lawyers, look at the attorney's track record, recognition, and legal specialization.
Helpful credentials to look for in DWI attorneys include:
Many clients say their best attorney was the one who explained the entire process in plain language and answered every call. Extremely knowledgeable defense attorneys can spot gaps the State has missed and use them to build a valid defense. Each Houston DWI case has its own facts, and the right lawyer should treat your case that way.
These short answers cover common questions about Houston marijuana DUI cases. Use them as a starting point before you talk to a board-certified attorney about your own facts. None of these replace a one-on-one review of your file.
Usually, yes. Texas charges adult marijuana-impaired driving as DWI. Many people still search for marijuana DUI online out of habit.
Yes. The State must still prove impairment while driving under the Texas Penal Code. Past marijuana use or a positive test alone is not enough. Understanding the legal process early is critical, and a Houston DWI lawyer can explain how impairment is measured, even after the immediate effects have faded.
Not automatically. THC results must be read with timing and driving factors in mind. Officer observations and lab reliability also matter. Forensic standards from organizations like the National College of DWI Defense or the Texas Board of Legal Specialization can help challenge questionable lab results.
Yes. A marijuana DWI arrest can trigger ALR license suspension issues. These run separate from the criminal court case. Unlike a standard drunk-driving case involving alcohol, a marijuana DWI carries similar administrative penalties, making it essential to consult a Houston DWI lawyer promptly.
Yes. Dismissal may be possible if the stop, arrest, testing, or evidence of impairment is legally weak. No outcome is guaranteed. A lawyer familiar with Texas penal code requirements and national college training resources can identify flaws in the State's proof.
No. Remain silent. Ask for a criminal defense attorney before answering questions about marijuana use or driving. The legal process gives you that right, and a Houston DWI lawyer can guide you through every step, including any Texas board-certified specialist if needed.
Contact LaVine Law Firm now if you face a marijuana DUI or DWI charge in Houston. A Houston marijuana DUI attorney can review your traffic stop, blood tests, and ALR hearing options in one focused conversation. Early action helps protect your driver's license, criminal record, employment, and future.
Do not talk to police without counsel, and do not ignore the 15-day ALR deadline. Call (713) 489-7692 or visit LaVine Law Firm to schedule a free consultation. A short call can change the entire path of your case.
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