Texas Penal Code § 49.07 defines intoxication assault as causing serious bodily injury to another person while operating a motor vehicle, aircraft, watercraft, or amusement ride while intoxicated. It is a third-degree felony in most cases and carries the potential for prison time, steep fines, and long-term consequences. A conviction can follow you for life, affecting employment, professional licenses, and your driving privileges. Early legal intervention is critical when facing this type of charge in Texas.
When someone is accused of intoxication assault, the stakes are dramatically higher than a standard DWI. Defense strategy must address both intoxication evidence and the element of serious bodily injury. Clients across Texas rely on experienced representation from Deandra Grant Law when facing serious felony DWI-related charges.
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What Is Intoxication Assault Under Texas Law?
Under Texas Penal Code § 49.07, a person commits intoxication assault if:
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They operate a motor vehicle in a public place, or operate an aircraft, watercraft, or amusement ride
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They are intoxicated
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By reason of that intoxication, they cause serious bodily injury to another person
Each element must be proven beyond a reasonable doubt.
What Does “Intoxicated” Mean?
Texas law defines intoxication as:
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Not having the normal use of mental or physical faculties due to alcohol, drugs, or a combination of substances
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Having a blood alcohol concentration of 0.08 percent or more
This means a person can be charged even if their BAC is below 0.08 percent if the officer claims impairment.
What Is “Serious Bodily Injury”?
Serious bodily injury is defined as an injury that:
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Creates a substantial risk of death
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Causes death
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Results in serious permanent disfigurement
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Causes protracted loss or impairment of a body part or organ
Broken bones, traumatic brain injuries, internal bleeding, and spinal injuries often meet this threshold.
Is Intoxication Assault a Felony in Texas?
Yes. Intoxication assault is generally a third-degree felony.
Penalties may include:
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2 to 10 years in prison
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Up to $10,000 in fines
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Driver’s license suspension
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Mandatory ignition interlock device
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Probation in certain cases
If the victim is a peace officer, firefighter, or emergency medical personnel performing official duties, the charge can be enhanced to a second-degree felony, which carries 2 to 20 years in prison.
How Is Intoxication Assault Different From DWI?
Many people assume intoxication assault is simply a more serious DWI. While it is related, it is legally distinct.
A standard DWI in Texas requires proof of intoxication while operating a vehicle. No injury is required.
Intoxication assault requires:
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Proof of intoxication
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Proof that serious bodily injury occurred
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Proof that the injury happened because of the intoxication
Causation is a key issue. Prosecutors must show that the intoxication caused the injury, not merely that an accident occurred.
For more information about general DWI charges, review our guide to working with a Texas DWI defense lawyer and understanding your rights.
The Arrest and Investigation Process
Most intoxication assault cases begin with a crash investigation. Law enforcement will typically:
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Secure the accident scene
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Interview witnesses
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Conduct field sobriety tests
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Request a breath or blood sample
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Photograph and document injuries
In many cases, officers obtain a blood warrant if a driver refuses testing.
Crash reconstruction experts may later analyze:
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Vehicle speed
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Skid marks
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Road conditions
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Airbag module data
The prosecution will attempt to combine toxicology results with accident reconstruction to build a narrative of intoxication causing injury.
Possible Defenses to Intoxication Assault Charges
Every case is fact-specific. A strong defense requires careful examination of evidence, police procedures, and scientific testing methods.
Common defense strategies may include:
Challenging the Traffic Stop
If the officer lacked reasonable suspicion to initiate the stop, evidence obtained afterward may be suppressed.
Questioning Field Sobriety Tests
Field sobriety tests are subjective and can be affected by:
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Medical conditions
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Fatigue
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Anxiety
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Uneven road surfaces
Attacking Blood Test Results
Blood testing procedures must follow strict protocols. Issues may include:
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Improper storage
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Chain of custody errors
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Lab contamination
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Fermentation effects
Disputing Causation
Even if intoxication is alleged, the prosecution must prove intoxication caused the injury. Defense may present evidence that:
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Another driver was at fault
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Road conditions caused the crash
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Mechanical failure contributed
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The injury was not legally “serious bodily injury”
An experienced Texas criminal defense lawyer will evaluate all angles of the case.
What Happens After Arrest?
After arrest, the case proceeds through several stages:
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Magistration and bond setting
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Grand jury review for indictment
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Arraignment
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Pretrial motions and discovery
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Negotiations or trial
Because intoxication assault is a felony, grand jury indictment is required before the case proceeds to district court.
Early intervention allows defense counsel to:
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Preserve critical evidence
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Hire independent experts
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Negotiate with prosecutors
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Protect driving privileges
Case Results
Real-World Example Scenario
Consider a driver involved in a late-night Dallas collision. Another vehicle runs a red light, causing a crash that results in a passenger suffering a broken leg and internal injuries. The responding officer smells alcohol and conducts testing. A blood test later shows a BAC slightly above 0.08 percent.
The prosecution charges intoxication assault.
In this type of case, defense strategy may examine:
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Traffic camera footage
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Fault determination
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Timing of alcohol absorption
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Medical classification of the injury
When evidence shows another driver primarily caused the accident, it may significantly affect the outcome.
Long-Term Consequences of a Conviction
A felony intoxication assault conviction can impact:
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Employment opportunities
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Professional licenses
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Immigration status
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Gun rights
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Insurance rates
Felony convictions remain on criminal records permanently unless successfully challenged or overturned.
Protecting your future requires a strategic approach from the outset.
Why Early Legal Representation Matters
Time is critical in felony DWI-related cases. Prosecutors begin building their case immediately.
Strong defense representation may:
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Challenge the admissibility of chemical tests
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Retain independent toxicology experts
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Investigate accident reconstruction
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Negotiate for reduced charges where appropriate
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Prepare aggressively for trial if necessary
Because these cases combine DWI law, injury analysis, and complex scientific evidence, they require focused defense experience in Texas courts.
Speak With a Trusted Texas DWI and Criminal Defense Attorney Today
If you or someone you love has been charged under Texas Penal Code § 49.07, do not wait to seek legal guidance. Deandra Grant Law has decades of experience defending clients across Texas in serious DWI and felony cases. Our team understands how prosecutors build intoxication assault cases and how to challenge them effectively.
Contact Deandra Grant Law today for a free, confidential consultation and learn how we can help protect your freedom, your license, and your future.
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