Driving While Intoxicated (DWI)

An arrest for driving while intoxicated (DWI) in Texas can be embarrassing, frightening, and confusing for any alleged offender. When a person is facing DWI charges in the greater Houston area, it is important to obtain an experienced criminal defense attorney quickly so you can preserve all avenues of attacking the prosecutor’s case. Although many people assume that an arrest always leads to a conviction, experienced DWI lawyers know that many of these offenses are dismissed or reduced to less serious charges.

Warning: After a DWI arrest in Texas, you only have fifteen (15) days to request a hearing with the Department of Motor Vehicles (DMV) to challenge the administrative suspension of your driver's license. No downside exists to preserving this important avenue of attacking the accusation.

Houston DWI Lawyer

Call Houston DWI attorney Matt Horak to discuss the particular facts of your case. Although this website has been created to provide you with general information on specific aspects of fighting the DWI charge, there is no substitute for discussing the particular facts of your case with an attorney so you can obtain advice on how to best protect your driver's license, criminal record, and reputation.

Some of the types of alleged drunk driving cases that Matt Horak, Attorney At Law, PLLC handles include:

Avoiding a DWI conviction can save you thousands of dollars in court imposed expenses such as fines, court costs, and cost of supervision. Even more importantly, avoiding a DWI conviction can also spare you several indirect expenses associated with a DWI conviction including increased car insurance rates and damage to your educational or career opportunities.

Matt Horak, Attorney at Law, PLLC can help you with both your criminal case and your administrative license revocation hearing with the DMV to ensure that your case receives the proper consideration in both settings. If you have been arrested for DWI in the greater Houston area, including Harris County, Montgomery County, Fort Bend County, Brazoria County, Galveston County, Liberty County, or Waller County, contact our office to schedule your free, immediate, and confidential consultation with experienced DWI lawyer Matt Horak. Call to discuss the specific facts of your alleged drunk driving case.


Information about DWI Charges in Texas


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DWI Definitions under Texas Law

Under Texas Penal Code § 49.04, a person commits the offense of DWI if he or she is intoxicated while operating a motor vehicle in a public place. Intoxicated is defined as either having an alcohol concentration of 0.08 or not having the normal use of mental or physical faculties by reason of the introduction of:

  • alcohol;
  • a controlled substance;
  • a drug;
  • a dangerous drug;
  • a combination of two or more of the substances listed above; or
  • any other substance into the body.

Whether or not you are intoxicated is typically determined by Texas law enforcement officers through chemical testing of your breath or blood alcohol concentration (BAC). The legal BAC limits are as follows:

  • 0.08 for licensed non-commercial drivers over the age of 21;
  • 0.04 for motorists with commercial driver’s licenses (CDLs); and
  • 0.02 for drivers under the age of 21.

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Harris County DWI Breath Tests

A "breathalyzer" is a machine that is used for measuring the blood alcohol content of the body from a breath sample. Since it is a breath sample that is used and not a blood sample, the breathalyzer machine cannot measure directly the amount of blood alcohol content in the blood. Instead, the machine makes various assumptions that can impact the reliability of the result produced by the machine. Factors that can lead to an inaccurate result can include:

  • The temperature of the surrounding air or your body temperature;
  • The breathing patterns of the individual taking the test;
  • The hematocrit levels of the individual taking the test;
  • Improper calibration of the Breathalyzer machine; or
  • The presence of “interfering compounds” such as acetone or methyl tertiary-butyl ether (MTBE).

The breath test machine used in the greater Houston area in Harris County and throughout the rest of Texas is called the "Intoxylizer 5000." The machine is manufactured by a company called CMI, Inc. in Owensboro, Kentucky.

The Texas Intoxilyzer 5000 relies on outdated technology that often mistakenly assumes that other substances in the breath are alcohol which leads to inaccurately high readings. For these and many other reasons, it is important to have an experienced DWI defense attorney like Matt Horak review all aspects of your DWI case if you submitted to the breath testing on the Intoxilyzer 5000.


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Effects of Houston DWI Breath or Blood Test Refusal

To blow or not to blow? The state of Texas has an implied consent law. This means that if you receive a driver’s license in the Lone Star State, you have automatically consented to a chemical test of your blood, breath, or urine to determine your BAC or the presence of any drugs.

A person still has the right to refuse to consent to any chemical test, but refusal to submit to one of these requested tests during a DWI arrest will lead to further administrative consequences.

Benefits of Refusing the DWI Chemical Testing in Texas

You should know that you cannot be forced to submit to a breath or blood test in most cases. Certain benefits exist when the driver decides not to submit to the breath or blood test, including:

  • The prosecutor will be left without any scientific documentation of your BAC at the time of your arrest to use against you at trial;
  • You will not be forced to defend yourself against an inaccurate Intoxilyzer 5000;
  • It may be more difficult for the prosecution to prove DWI, especially if you have also refused to take the field sobriety test.

For any of these reasons, refusing to take the breath or blood test may make it more likely that you will be able to avoid a DWI conviction.

Disadvantages of Refusing the DWI Chemical Testing in Texas

Of course, certain disadvantages also exist after refusing to take a chemical test. First, the administrative consequences imposed by the DMV may be harsher after a refusal than after the driver blows over the legal limit. The administrative consequences that could result may include the following:

  • A first refusal offense can result in a 180-day license suspension;
  • If an alleged offender has had his or her driver’s license previously suspended for failing or refusing a blood or breath test, or for a DWI, intoxication assault, or intoxication manslaughter conviction in the prior 10 years, his or her driver’s license will be suspended for two years.

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DWI Criminal Case vs. Administrative Case in Harris County

When a person is arrested for DWI, there are two cases that are triggered: a criminal case and a civil case. The criminal case is prosecuted through the criminal court system according to the Texas statutes pertaining to DWI. The criminal case can result in varying penalties depending on the severity of the charges, ranging from classes to fines to jail time.

The other case that is triggered is a civil case reviewed solely by the DMV. The DMV reviews the case for an Administrative License Revocation, also known as an ALR. An ALR can result from refusal to submit to chemical test or a result of 0.08 or greater when a chemical test is taken.

Once the DMV serves a driver with notice of an ALR, the driver has 15 days to request a hearing. If the driver fails to request a hearing, the suspension automatically goes in to effect on the 40th day after the notice from the DMV has been served. This is why it is imperative that you contact a DWI attorney immediately after your arrest, as the window for response to the DMV notice is narrow.


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The Criminal Penalties for DWI under Texas Law

Under Texas law, the penalties for a DWI conviction depend on whether you have been previously convicted of this crime. Understanding the potential punishments after a DWI arrest requires understanding both the direct and indirect consequences.

First DWI under Texas Law

In the state of Texas, a first-time DWI is a Class B misdemeanor. Punishments can include, but are not limited to the following:

  • $2,000 maximum fine;
  • Up to six months in jail;
  • Driver’s license suspended for up to one year;
  • Annual fee of at least $1,000 up to $2,000 every year for three years to keep driver’s license;
  • Completion of 12-hour DWI Education Program within 180 days of when probation was granted or risk having their license revoked; and
  • At least 24 hours up to 100 hours of community service.

Second DWI under Texas Law

In the state of Texas, a second DWI is a Class A misdemeanor. Punishments upon conviction can include, but are not limited to the following:

  • $4,000 maximum fine;
  • Up to one year in jail;
  • Driver’s license suspended for up to two years;
  • Annual fee of at least $1,000 up to $2,000 every year for three years to keep driver’s license; and
  • At least 80 hours up to 200 hours of community service.

Third or Subsequent DWI

A third DWI in the state of Texas is a third-degree felony. A third DWI conviction or guilty plea can result in the following punishments:

  • $10,000 maximum fine
  • Up to 10 years in prison
  • Driver’s license suspended for up to two years
  • Annual fee of at least $1,000 up to $2,000 every year for three years to keep driver’s license;
  • At least 80 hours up to 200 hours of community service. 

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Commercial Vehicle DWI under Texas Law

A commercial vehicle driver with a BAC of 0.04 or higher is considered intoxicated under Texas state law. Any driver operating a commercial vehicle in Texas with a BAC of 0.04 or higher can be subject to all of the punishments handed out for other drivers who had a BAC of 0.08 or higher. In addition to those penalties, CDL drivers may be subject to the following penalties:

  • For a first DWI, loss of the CDL for at least one year; and
  • For a second DWI, loss of the CDL for life.

Any CDL driver convicted of a DWI in Texas, whether while operating a commercial vehicle or a private, non-commercial vehicle, can face suspension of the CDL license. If you are convicted of a DWI in another state, that state will report the conviction to the state of Texas.

Matt Horak represents CDL drivers charged with DWI and other serious traffic crimes in Houston, TX including reckless driving.


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DWI with Minor in Vehicle

It is a felony in the state of Texas to operate a vehicle while intoxicated with a passenger who is a minor under the age of 15. If an individual pleads or is found guilty of a DWI with a child passenger, this is a state jail felony punishable by the following:

  • A fine of up to $10,000; and
  • A prison term of at least 180 days and up to 2 years.

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Texas DWI Resources

Texas DWI Laws - Summary of DWI laws from the Texas Alcoholic Beverage Commission (TABC). The TABC is the state agency that oversees the alcoholic beverage industry in the state. The job of the commission includes regulating advertising, manufacturing, taxation, sales, transporting, and importation of alcoholic beverages.

National Highway Traffic Safety Administration (NHTSA) Standardized Field Sobriety Testing — NHTSA is a federal agency within the United States Department of Transportation, and this appendix provides an overview of the three standardized field sobriety tests recognized by most courts. These include Horizontal Gaze Nystagmus, Walk-and-Turn, and One-Leg Stand tests. Any other tests (such as various alphabet-related tests) may generally be found to be flawed or inadmissible in a court of law.

Faces of Drunk Driving — This website is part of a public education program from the Texas Department of Transportation. The site features the stories of drivers, accident victims, and family members. There are also videos and tips on what you can do to prevent a tragedy.


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Matt Horak, Attorney at Law | Texas DWI Defense

Defending a DWI charge in the state of Texas requires an experienced lawyer who understands how to effectively fight all aspects of the case. In order to ensure that you have the best assistance negotiating the maze of administrative and criminal hearings, contact Houston criminal defense attorney Matt Horak to discuss your case. You can call us locally at (713) 225-8000 or toll free at (800) 225-8009 or you can submit our online contact form.

If you've been arrested for DWI anywhere in the greater Houston area, including: Harris County, Montgomery County, Fort Bend County, Brazoria County, Galveston County, Liberty County, or Waller County, don't wait to begin your defense. Contact us today and schedule your free consultation.

Texas Criminal Defense Attorney
Principal Office
Harris County Texas
4119 Montrose Blvd. Suite 200
Houston, TX 77006
Secondary Office
Montgomery County Texas
Two Hughes Landing Building
1790 Hughes Landing Blvd #400
The Woodlands, TX 77380
(office visits by appointment only)
Matt Horak, Attorney At Law, PLLC
Houston: 713-225-8000
The Woodlands: 281-907-4990
Fax: 713-521-1845

This website is sponsored by Matt Horak. Principal office located at 4119 Montrose Blvd. Suite 200, Houston, Texas 77006. Information provided on this website is for general purposes only and should not be interpreted as legal advice for any situation. Legal advice can only be given after an official attorney-client relationship has been formally agreed upon with the defense lawyer.

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