
Round Rock DWI Lawyer
DWI Laws in Texas
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Under the Texas DWI law, it is illegal to operate a motor vehicle with a blood alcohol concentration (BAC) of 0.08% or higher. However, you can be arrested for DWI even with a lower BAC if your driving ability is impaired by alcohol or drugs.
Types of DWI in Texas
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Alcohol-Related DWI
Operating a vehicle with a BAC of 0.08% or higher.
Drug-Infused DWI:
Driving under the influence of illegal drugs, prescription medication, or over-the-counter drugs that impair mental or physical abilities.
Underage DWI (DUI)
Drivers under 21 caught with any detectable amount of alcohol in their system, following Texas' Zero Tolerance Law.
DWI with Child Passenger
Driving while intoxicated with a child under 15 years old in the vehicle, resulting in a State Jail Felony.
Commercial Driver’s DWI
Operating a commercial vehicle with a BAC of 0.04% or higher, leading to license suspension and job loss.
Intoxication Assault
Causing serious bodily injury to another person while driving intoxicated.
Intoxication Manslaughter
Causing the death of another person due to intoxicated driving.
Multiple DWI
Repeat offenses that result in enhanced penalties, including longer jail sentences and higher fines.
Felony DWI
Charged when aggravating factors are present, such as multiple offenses, accidents causing injury or death, or driving with a child passenger.
Unique Texas-Specific DWI Laws
Texas also has some unique DWI laws:
Zero Tolerance for Minors
Drivers under 21 years old can be charged with DUI (Driving Under the Influence) if any detectable amount of alcohol is found in their system.
Open Container Law
It is illegal to possess an open container of alcohol in the passenger area of a vehicle, even if you are not intoxicated.
Implied Consent Law
By obtaining a Texas driver's license, you automatically consent to a chemical test if suspected of DWI. Refusal to take the test results in license suspension.
DWI vs. DUI
In Texas, DWI (Driving While Intoxicated) and DUI (Driving Under the Influence) are separate offenses:
DWI
Applies to adults aged 21 and older with a BAC of 0.08% or higher or if driving is impaired due to alcohol or drugs.
DUI
Applies to minors under 21 years old with any detectable amount of alcohol in their system. Zero tolerance is enforced, and penalties are generally less severe than for DWI.
Penalties for DWI in Texas
The penalties for DWI depend on the number of prior offenses, BAC level, and whether any aggravating factors were involved.
Enhanced Penalties for DWI
Certain circumstances can result in enhanced penalties for DWI in Texas, including:
BAC of 0.15% or Higher
Leads to Class A Misdemeanor charges, with up to 1 year in jail and higher fines.
DWI with Child Passenger
Driving while intoxicated with a child under 15 years old is a State Jail Felony, resulting in up to 2 years in state jail.
Intoxication Assault
Causing serious bodily injury while driving intoxicated, charged as a Third-Degree Felony.
Intoxication Manslaughter
Causing death due to intoxicated driving, charged as a Second-Degree Felony with 2 to 20 years in prison.
Number of Offenses
Repeat offenses lead to harsher penalties, including longer jail sentences and higher fines.
Texas' Pre-Trial Intervention Program
Texas offers a Pre-Trial Intervention Program for eligible first-time DWI offenders, which may result in:
- Dismissal of charges upon successful completion.
- Avoiding a permanent criminal record.
- Mandatory counseling, community service, and alcohol education classes.
This program is not available to repeat offenders or cases involving aggravating factors like accidents or high BAC levels. Attorney Ryan H. Deck can help determine your eligibility for this program.
What To Do If You're Pulled Over for a DWI
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You need to understand that Driving While Intoxicated (DWI) is a very serious offense, and law enforcement treats it that way. When you've been pulled over and the officer suspects you've been drinking:
1. Identify Yourself
The only thing you must do is identify yourself (and let the officer see your driver's license) and exit the vehicle when asked.
2. Take the BAC Test
Although you can refuse to take a breathalyzer test (to “blow”), you should submit to a breathalyzer test. Failing to be subject to a chemical test could lead to additional penalties, including excessive legal fines and an automatic driver's license suspension.
3. Don't Take Field Sobriety Tests
You do NOT have to take the standardized field sobriety tests (SFSTs). Other than that, you can deny all field sobriety tests and refuse to answer any questions, especially if you have bad balance or coordination. But it's important to know that if you deny the SFSTs, you are definitely going to be arrested.
4. Be Respectful
Don't try to be funny or cute. Respect the officer, but also be firm in asserting your rights.
5. Be Clear and Confident With Your Answers
If you decide to answer the officer's questions, be clear and confident with your answers. When you're being pulled over and wait for them to approach your vehicle, go over in your head where you've been, where you're going, and what you've been doing that day/night because you will most likely be asked those questions.
6. Don't Incriminate Yourself Any Further
The officer will also likely ask you how much you've had to drink. If you've had more than a couple, you may want to politely tell the officer that you'll only answer his questions with your DWI attorney present. The officer will try to talk you out of it, but stay firm in asserting your rights.
Defense Strategies Against DWI Charges in Round Rock
Building a strong defense against DWI charges in Williamson County requires a strategic approach tailored to each case. Ryan H. Deck uses aggressive legal tactics to challenge the evidence, arrest procedures, and validity of chemical tests to protect his clients’ rights and pursue the best possible outcome.
Challenging BAC Results
Breathalyzers and blood tests can be inaccurate due to improper calibration, faulty devices, or improper administration. We challenge the reliability of BAC evidence to weaken the prosecution's case.
Questioning Field Sobriety Tests
Field sobriety tests are subjective and can be affected by medical conditions, poor weather, or nervousness. We challenge the accuracy and administration of these tests to cast doubt on the arrest's validity.
Illegal Traffic Stop
Law enforcement must have reasonable suspicion to make a traffic stop. If the stop was unlawful, any evidence obtained can be suppressed, weakening the prosecution's case.
Rising BAC Defense
BAC levels can rise over time, meaning the BAC at the time of testing may be higher than when driving. We argue that the BAC was below the legal limit when the vehicle was operated.
Medical Conditions and Medications
Conditions like diabetes, GERD, or certain prescription drugs can mimic signs of intoxication or produce false positives on breath tests. We provide medical evidence to support alternative explanations.
Faulty Breathalyzer Device
Breathalyzer devices require proper calibration and maintenance. We investigate device records and officer training to challenge the accuracy of the BAC results.
Improper Arrest Procedures
We argue for evidence suppression if the officer did not follow legal procedures, such as failing to read Miranda Rights or improperly administering tests.
No Proof of Driving
If there is no direct evidence of the defendant driving, such as being found asleep in a parked car, we argue that the prosecution cannot prove the operation.
Mistaken Identity or Inaccurate Witness Statements
Eyewitness accounts can be unreliable or biased. We cross-examine witnesses to expose inconsistencies and create reasonable doubt.
Plea Bargaining and Charge Reductions
When appropriate, we negotiate for reduced charges or alternative sentencing options, such as probation or community service, to minimize penalties.
Target

Don’t Let the System Roll You Over. Fight Back with Us.
The consequences of a DWI case can be severe, but you have the right to a strong defense. We are dedicated to protecting your rights and will fight aggressively for reduced charges or case dismissal.
Start Fighting Your DWI Charges Now
Accused of DWI? Fill out the form now to schedule a free consultation with Ryan H. Deck and protect your future.

FREQUENTLY ASKED QUESTIONS
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What is an Ignition Interlock Device?
An Ignition Interlock Device (IID) is a breathalyzer installed in your vehicle that requires you to pass a breath test before the engine will start. If the device detects alcohol above a preset limit, the car won’t start. In Texas, IIDs are mandatory for certain DWI offenders, especially for repeat offenses or high BAC levels.
Can you deny a breathalyzer/blood test in Texas?
You can refuse a breathalyzer or blood test, but under Texas' Implied Consent Law, refusal results in an automatic license suspension of 180 days for the first refusal and 2 years for repeat refusals. Refusal can also be used as evidence of guilt in court. In some cases, law enforcement can obtain a warrant to force a blood draw.
Do you have to be drunk to be guilty of DWI?
No, you do not have to be visibly drunk to be convicted of DWI in Texas. Driving While Intoxicated (DWI) includes being impaired by alcohol, drugs (including prescription or over-the-counter), or a combination of substances that affect your mental or physical abilities. A BAC of 0.08% or higher is enough to be charged, even if you don’t feel drunk.