Dallas DWI with CDL Lawyers

What Counts as a “Major Offense”

Under 49 CFR § 383.51(b), Table 1 “major offenses” include:

• Being under the influence of alcohol as prescribed by state law;
• Being under the influence of a controlled substance;
• Having a BAC of 0.04 or more while operating a CMV;
• Refusing to take an alcohol test as required by state or federal law (implied consent);
• Leaving the scene of an accident;
• Using the vehicle to commit a felony;
• Driving a CMV when the CDL is revoked, suspended, canceled, or the driver is disqualified;
• Causing a fatality through the negligent operation of a CMV.

Under § 383.51(a)(4), convictions are counted separately even if one was in a CMV and the other in a non-CMV. A DWI in a personal car followed by a DWI in a CMV is a first offense plus a second offense, producing lifetime disqualification.

The Underlying Texas DWI Offense

The Texas criminal charge itself is prosecuted under the standard DWI statutes, with one additional wrinkle for CDL holders:

• Penal Code § 49.04 — the standard DWI statute. A first offense is a Class B misdemeanor (72 hours to 180 days, fine up to $2,000); Class A (up to 1 year, fine up to $4,000) if BAC is 0.15 or higher.
• Penal Code § 49.04(d) — the 0.15 BAC elevation to Class A misdemeanor, with mandatory ignition interlock as a bond condition under Code of Criminal Procedure Article 17.441.
• Penal Code § 49.04 combined with CDL operation — the state may charge standard DWI based on intoxication (0.08 BAC or loss of normal faculties), not the federal 0.04 CMV threshold. The 0.04 is a federal CDL-regulatory standard; the criminal charge in Texas still requires § 49.01 intoxication.
• Penal Code § 49.07 / § 49.08 — intoxication assault and intoxication manslaughter, if the driving caused serious bodily injury or death. Either charge produces felony exposure in addition to the CDL consequences.
• Texas Transportation Code § 522.081 — mirrors federal CDL disqualification periods and implements them at the state licensing level.

Collateral CDL Consequences

• FMCSA Drug and Alcohol Clearinghouse. Since January 2020, drug and alcohol test violations must be reported to the FMCSA Clearinghouse, where employers are required to query before hiring and annually for current drivers. A violation in the Clearinghouse can end a driving career even when the state criminal case is still pending.
• Employer notification. Under 49 CFR § 383.31, a CDL driver convicted of any traffic violation other than parking must notify the employer within 30 days. Under § 383.33, any driver’s license suspension, revocation, or cancellation must be reported by the end of the next business day.
• DAC (Drive-A-Check) report. Commercial driver employment history reports maintained by HireRight and other vendors track DWI arrests and convictions, and new employers routinely check them.
• Return-to-duty process. Under 49 CFR Part 40, Subpart O, a CDL driver with a drug or alcohol violation must complete a return-to-duty process with a DOT-qualified Substance Abuse Professional (SAP), including evaluation, education/treatment, a return-to-duty test, and follow-up testing for a minimum of one year.
• Insurance and employability. Even after any CDL disqualification ends, insurance and employer background reviews typically impose de facto hiring restrictions on drivers with DWI histories for years.

How CDL DWI Cases Are Defended

Because deferred adjudication does not save the CDL, CDL defense is built differently. The objective is either a not-guilty verdict, a dismissal, or a reduction to a non-disqualifying offense that Texas courts will accept without triggering § 384.226’s masking prohibition.

Pretrial Suppression

Motions to suppress the stop, the arrest, and any warrant-based blood evidence are at the center of CDL defense. Every traffic stop requires reasonable suspicion; every arrest requires probable cause; every warrant requires a sufficient affidavit. Any of them, if successfully attacked, can end the case before the CDL consequences attach.

Forensic Challenges

Ethanol concentration is measured by headspace gas chromatography with flame ionization detection (GC-FID). Attack points include sample collection, preservative adequacy, chain of custody, calibration, column chemistry, and measurement uncertainty. On drug cases, LC-MS/MS protocols, active versus inactive metabolites, and correlation with impairment are all contestable. 

SFST Challenges

Deandra Grant is a Standardized Field Sobriety Test instructor. She teaches the same curriculum the officers in your case were trained on and can identify administration errors that invalidate the results the state wants to rely on.

Reduction to a Non-Disqualifying Offense

Where a DWI conviction would trigger disqualification, a reduction to obstruction of a highway, reckless driving, or another non-disqualifying offense (negotiated with prosecutorial consent, based on the facts and the strength of the state’s case) can preserve the CDL. Whether such a reduction is available depends entirely on the case.

ALR Hearing

The 15-day ALR hearing request is critical. The ALR hearing produces an opportunity to cross-examine the arresting officer under oath before the criminal case is tried which, in a CDL case, often provides the critical factual material for later suppression motions.

Where Dallas County CDL DWI Cases Are Heard

Misdemeanor CDL DWI cases are filed in the Dallas County Criminal Courts at the Frank Crowley Courts Building, 133 N. Riverfront Boulevard. Felony CDL DWI cases (DWI 3rd, intoxication assault, intoxication manslaughter) are filed in the Dallas County Criminal District Courts at the same building. The ALR suspension proceeds on a separate administrative track through the State Office of Administrative Hearings.

Frequently Asked Questions

I was in my personal vehicle. Does the CDL still get disqualified?

Yes. Under 49 CFR § 383.51(a)(3), a CDL holder is subject to CDL disqualification for a DWI conviction whether the offense occurred in a commercial motor vehicle or in the driver’s personal vehicle. The CDL follows the driver, not the vehicle.

If I get deferred adjudication, does that save my CDL?

No. 49 CFR § 384.226 prohibits states from masking CDL driver convictions through deferred adjudication or similar mechanisms. For federal CDL purposes, a deferred adjudication still counts as a conviction. This is the single most important fact for any CDL holder considering a plea.

Is there any way to get a hardship or occupational license for my CDL?

No. Texas cannot issue any hardship license for CDL privileges during a federal disqualification period. An occupational or essential-need license cannot restore CDL privileges while the federal disqualification is in effect. Limited relief may be available for non-CDL (Class C) driving privileges under Chapter 521 of the Transportation Code, but the CDL remains disqualified.

Can I get my CDL back after a lifetime disqualification?

Potentially, under 49 CFR § 383.51(a)(6), after 10 years but only if the driver has voluntarily entered and successfully completed a state-approved rehabilitation program. The process runs through the Texas Department of Public Safety and requires specific documentation. The lifetime disqualification for a first offense of using a CMV to commit a controlled-substance-distribution felony is not subject to this ten-year reinstatement pathway.

Should I tell my employer about the arrest?

Under 49 CFR § 383.33, notification of any suspension, revocation, or cancellation is required by the end of the next business day. Notification of convictions is required within 30 days under § 383.31. Specifically what to disclose, and when, is a question to work through with counsel but the regulatory obligation to notify is not discretionary.

About Deandra Grant Law

Deandra Grant Law is a Texas criminal defense and DWI firm with offices in Dallas, Fort Worth, Allen, Denton, Waco, and Rockwall. Our DWI practice is built on the forensic science that drives these cases and on the understanding that CDL defense has different objectives than regular DWI defense.

Deandra M. Grant, Managing Partner

• More than 30 years in practice, focused on criminal defense and DWI
• Former prosecutor
• J.D.; M.S. in Pharmaceutical Sciences
• Graduate Certificate in Forensic Toxicology
• ACS-CHAL Forensic Lawyer-Scientist from the American Chemical Society
• Standardized Field Sobriety Test (SFST) Instructor
• Texas Super Lawyer since 2011
• Author of 17 law books including The Texas DWI Manual
• Executive Director, DUI Defense Lawyers Association (DUIDLA)

Douglas E. Huff, Partner

• ACS-CHAL Forensic Lawyer-Scientist
• Digital forensics and electronic evidence training
• Extensive DWI trial experience across North Texas

James Lee Bright, Of Counsel

• National federal criminal defense practice
• Admitted to all four Texas federal districts, the District of Columbia, the Fifth Circuit Court of Appeals, and the Supreme Court of the United States

Contact Our Dallas CDL DWI Attorneys

For a CDL holder, the goal of the defense is not just the criminal case. It is the license that pays the bills. A deferred adjudication that would satisfy most DWI defendants is the wrong answer. A dismissal, an acquittal, or a reduction to a non-disqualifying offense is the right one. Knowing which is realistic in any given case requires early investigation, aggressive pretrial work, and an honest assessment of the evidence.

Call Deandra Grant Law at (214) 225-7117 to schedule a consultation. We serve Dallas County and surrounding North Texas counties from our Dallas office.