Texas DWI Defense Attorneys

Texas DWI law (Penal Code §49.04) makes it illegal to operate a motor vehicle in a public place while intoxicated — meaning either a blood-alcohol concentration of 0.08% or higher, or loss of normal mental or physical faculties from alcohol, drugs, or any combination. First offense is a Class B misdemeanor. The case has both a criminal track and a civil ALR (Administrative License Revocation) track, each with its own deadlines.

What is a DWI in Texas?

Under Texas Penal Code §49.04, a person commits Driving While Intoxicated (DWI) when they are intoxicated while operating a motor vehicle in a public place. [1] "Intoxicated" has two definitions under §49.01: (a) not having the normal use of mental or physical faculties due to alcohol, drugs, or a combination; or (b) having an alcohol concentration of 0.08% or more.

The 0.08% threshold is the standard for adults 21 and older driving non-commercial vehicles. Commercial drivers face a stricter 0.04% limit. Drivers under 21 are subject to "any detectable amount" zero-tolerance laws — even one drink can trigger charges.

What makes Texas DWI law unusually defensible is the first prong: loss of normal use. The State doesn't always have a measured BAC. When officers rely on field sobriety tests, slurred speech observations, or open-container evidence — without a chemical test or with a contested one — the case rests on subjective testimony that experienced defense counsel can attack methodically.

Texas DWI Penalty Class Table

Texas grades DWI offenses by prior history, BAC level, and aggravating circumstances. Here's the full punishment matrix:

Beyond the criminal punishment, Texas DWI carries collateral consequences that can outlast the sentence: license suspension (separately, through the ALR civil track), surcharges under the Texas Driver Responsibility Program (now phased out for new offenses but lingering for older cases), mandatory installation of an ignition interlock device for second offenses and some first offenses, increased insurance premiums for years, and immigration consequences for non-citizens. Professional licensing — nursing, teaching, commercial driving, real estate — can be jeopardized depending on the licensing board's reporting requirements.

The ALR Hearing — Your 15-Day Deadline

The single most time-sensitive deadline in any Texas DWI case is the Administrative License Revocation (ALR) request. Under Texas Transportation Code §§524 and 724, your driver's license is automatically suspended on day 41 after a DWI arrest unless you (or your attorney) request an ALR hearing within 15 days. [3]

ALR is a civil proceeding, separate from the criminal case, conducted through the State Office of Administrative Hearings (SOAH). Even if the criminal DWI is later reduced or dismissed, the ALR suspension continues unless you successfully challenge it. The hearing is your earliest opportunity to confront the arresting officer under oath, obtain valuable discovery for the criminal case, and challenge whether:

• The officer had reasonable suspicion for the traffic stop
• The officer had probable cause for the DWI arrest
• The officer made a lawful request for breath or blood testing
• You actually refused or failed the test

If the State fails on any of those four elements, the suspension is overturned. Even when you don't prevail, the testimony locked in at the ALR hearing often becomes the foundation for motions to suppress in the criminal case. Skipping ALR is one of the costliest mistakes a DWI defendant can make.

Common DWI Defense Strategies

Most Texas DWI cases have multiple defense angles. Effective representation means identifying every weakness in the State's evidence, not just the obvious ones. Here are the defense pathways our practice pursues most often:

Constitutional challenges to the stop

Police need reasonable suspicion to initiate a traffic stop and probable cause to make a DWI arrest. [4] If the stop was based on a hunch — drifting once within a lane, leaving a bar parking lot, an anonymous tip without corroboration — a Fourth Amendment motion to suppress can exclude every piece of evidence that followed the stop. When suppression succeeds, the case typically ends in dismissal.

Field sobriety test challenges

The Standardized Field Sobriety Tests (SFSTs) — Horizontal Gaze Nystagmus (HGN), Walk-and-Turn, One-Leg Stand — were validated by NHTSA but have well-known limitations. Cross-examination focuses on whether the officer administered each test according to the protocol, whether the conditions (uneven pavement, traffic, weather, footwear, age, medical issues, prior injuries) compromised the result, and whether the officer interpreted the indicators correctly.

Breath test challenges

Texas uses the Intoxilyzer 9000 in most jurisdictions. The instrument requires regular maintenance and calibration; the technical supervisor must certify the instrument was working properly on the date of your test. Defense investigation includes maintenance records, calibration logs, the technical supervisor's certification, and the deprivation period (the State must observe the subject for 15 minutes before the test to ensure no oral contamination).

Blood test challenges

Blood draws raise different issues: chain of custody from the draw site to the lab, proper preservation (gray-top tubes with sodium fluoride and potassium oxalate to prevent fermentation), lab procedures, gas chromatography reliability, and the analyst's qualifications. Texas crime labs have had documented problems over the years; defense counsel pulls every available record to identify error margins and procedural lapses.

Pretrial intervention and DWI court

Many Texas counties offer pretrial intervention or DWI court programs for first-time, non-aggravated cases. Successful completion typically results in dismissal. Eligibility varies — Collin County has stricter criteria than some neighboring counties — but it's worth exploring on every case where the defendant qualifies.

DWI Reduction and Dismissal Pathways

"Reduction" and "dismissal" describe different outcomes, and the right pathway depends on the strength of the State's evidence and your prior history. The most common pathways:

• Reduction to obstruction of a highway (Tex. Penal Code §42.03) — a Class B misdemeanor that doesn't carry the DWI label, the surcharge, or the same insurance impact. This is a frequent negotiated outcome when the State's case has flaws but isn't dead.
• Deferred adjudication for first-offense DWI — added to Texas law via HB 3582 (2019), now codified at Tex. Code Crim. Proc. art. 42A.102. [5] First-offense DWI defendants with no aggravating factors and BAC under 0.15 may receive deferred adjudication. After successful completion, the case is dismissed; later, after a waiting period, the record can be sealed by order of nondisclosure.
• Motion to suppress dismissal — when constitutional issues with the stop, arrest, or test gut the State's evidence, a successful motion typically ends the case.
• Pretrial intervention — county-by-county program where qualifying defendants complete conditions (treatment, classes, community service) in exchange for dismissal.
• Acquittal at trial — when the BAC, the stop, or the field sobriety observations can be successfully challenged, a jury verdict of "not guilty" results in immediate eligibility for expunction under Tex. Code Crim. Proc. ch. 55.

The Texas DWI Court Process

Understanding the timeline helps clients make informed decisions about defense strategy. A typical Collin County DWI case proceeds through these stages:

1. Arrest and booking. Defendant is taken to the Collin County Detention Facility (or local municipal jail), processed, and held for magistrate appearance.
2. Magistrate appearance. Within 48 hours of arrest, a magistrate sets bond, advises of charges, and informs of right to counsel.
3. Bond posting and release. Defendant posts cash, hires a bondsman, or receives a personal recognizance bond.
4. 15-day ALR window. Attorney requests ALR hearing through SOAH.
5. Filing and arraignment. 30–90 days post-arrest, the case is formally filed (information for misdemeanor, indictment for felony) and arraignment occurs.
6. Discovery and pretrial motions. Defense obtains all evidence (offense report, video, breath/blood records, lab reports), files motions to suppress, requests Brady material.
7. ALR hearing. Typically 60–120 days after the request.
8. Plea negotiations or trial setting. 6–12 months from arrest.
9. Disposition. Plea, dismissal, deferred adjudication, or trial verdict.

The total timeline runs 6 to 12 months for misdemeanor cases, 12 to 18 months for felony cases, and longer when complex motion practice or a contested trial is involved. Defendants in custody typically see expedited dockets; out-of-custody defendants generally have more time to develop the defense.

How L&L Law Group Defends DWI Cases

Two perspectives drive how we work DWI cases: prosecutor experience and trial focus.

Reggie London (Tex. Bar #24043514) was a Dallas County prosecutor before founding L&L Law Group. He reads every offense report the way the assistant district attorney across from him will read it — and finds the holes first. That former-prosecutor lens shapes how we approach motion practice, plea negotiation, and trial preparation.

Njeri London (Tex. Bar #24043266), Co-Founding Partner, leads our trial work. Her practice puts pressure on every weak point in the State's case — the stop, the search, the science, the witness, the procedure. Most cases break long before a jury is ever seated.

Our DWI process for every client:

• 24-hour intake. We answer calls personally, including evenings and weekends. The 15-day ALR clock and bond reduction motions don't wait for business hours.
• Document preservation. We immediately request all maintenance, calibration, and certification records for the breath instrument, all video, all dispatch records, and all lab notes.
• ALR hearing as discovery. Even when winning ALR is uncertain, the hearing locks in officer testimony under oath that becomes ammunition for the criminal case.
• Independent evaluation. When breath or blood evidence is suspect, we consult independent toxicologists for second opinions.
• Motion practice. Suppression motions in DWI cases often determine the outcome; we file them as a matter of course where the facts support, not as an afterthought.
• Realistic counseling. We tell clients what we actually see in their case — including hard truths. Trial is the right call sometimes; it's a poor call other times. We never recommend either lightly.

"My job is to put pressure on every weak point in the State's case — the stop, the search, the science, the witness, the procedure. Most cases break long before a jury is ever seated." — Njeri London