Driving under the influence (DUI) in Texas is a serious offense that carries substantial legal and personal consequences. Whether you’re a first-time offender or have been in trouble with the law before, understanding Texas DUI laws is critical to ensure you avoid severe penalties and maintain your rights. DUI in Texas isn’t just about alcohol—it can also apply to drugs, whether prescription, over-the-counter, or illegal substances. The state takes DUI offenses seriously, and the consequences of a conviction can impact your life in many ways.
This article will break down everything you need to know about DUI in Texas, including the state’s laws, penalties, and the steps you can take to avoid being caught in the first place. With real-life examples and practical advice, we aim to give you a deeper understanding of how Texas DUI laws work and how they may affect you.
What Is DUI in Texas?
In Texas, DUI refers to the act of operating a vehicle while impaired by alcohol or drugs. The law defines “driving under the influence” as operating a motor vehicle while either:
- Having a blood alcohol concentration (BAC) of 0.08% or higher
- Being impaired due to the consumption of alcohol, drugs, or any other intoxicating substances that affect your ability to drive
It’s important to note that the term “DUI” in Texas is commonly used interchangeably with “DWI” (driving while intoxicated). However, Texas law distinguishes between the two. A “DUI” charge is often used for minors who are caught driving with any detectable alcohol in their system, while “DWI” applies to adults impaired by alcohol or drugs.
The Legal Blood Alcohol Concentration (BAC) Limit
In Texas, the legal BAC limit for drivers aged 21 and older is 0.08%. This is consistent with federal law. When your BAC reaches or exceeds this level, you are considered legally impaired, and you can be charged with DWI.
However, even if your BAC is below the legal limit, you can still be arrested and charged with a DUI or DWI if the officer believes you are impaired. Police officers are trained to look for signs of impairment, such as swerving, erratic driving, or slurred speech, which can serve as the basis for an arrest even without a BAC reading above 0.08%.

DUI and Drugs: Not Just Alcohol
Texas DUI laws don’t only apply to alcohol. If you are caught driving under the influence of drugs—whether prescription, over-the-counter, or illegal substances—you can face DUI or DWI charges. This includes substances like marijuana, prescription painkillers, or even some cold medications that can impair your ability to drive.
Law enforcement officers may use field sobriety tests and chemical tests to determine if you are under the influence of drugs. For drugs like marijuana, where the effects might not be immediately obvious to an officer, these tests become even more crucial in determining impairment. This highlights the importance of understanding that DUI in Texas covers more than just alcohol consumption.
Penalties for DUI in Texas
The penalties for DUI in Texas can vary depending on factors like whether it’s a first-time offense or a repeat offense, whether there were any aggravating circumstances (such as an accident or a child passenger), and whether you were impaired by alcohol or drugs. Here’s a breakdown of the common penalties you could face.

1. First-Time Offense (DWI)
If you’re arrested for DUI in Texas for the first time, you may face the following penalties:
- Fines: Up to $2,000
- Jail Time: Up to 180 days in jail, but probation may be an option in some cases
- Driver’s License Suspension: 90 days to one year
- Community Service: 24 to 100 hours
- Mandatory Alcohol Education: Attendance in an alcohol education program
In some cases, a first-time offender might qualify for a “supervision” sentence, where they can avoid jail time and pay fines instead. This may be part of a plea deal, and you might have to complete community service or attend counseling.
2. Second Offense (DWI)
A second DWI conviction in Texas can lead to more severe penalties:
- Fines: Up to $4,000
- Jail Time: 30 days to one year
- Driver’s License Suspension: 180 days to two years
- Community Service: Up to 200 hours
- Mandatory Alcohol Education: Attendance in an alcohol education program
A second offense is treated more seriously, and it can result in harsher consequences, including the possibility of serving time in jail.
3. Third Offense (DWI)
A third DWI conviction in Texas can result in the following penalties:
- Fines: Up to $10,000
- Jail Time: 2 to 10 years in state prison
- Driver’s License Suspension: Up to two years
- Community Service: Up to 600 hours
A third DWI offense is considered a felony in Texas and can result in a long prison sentence. Repeat offenders face the toughest penalties, and Texas courts tend to take a zero-tolerance approach to those with multiple offenses.
4. DUI with Child Passenger
Texas imposes severe penalties for DUI or DWI offenses involving a child passenger under the age of 15. If you are caught driving while intoxicated with a child passenger, you could face:
- Fines: Up to $10,000
- Jail Time: 180 days to two years in state prison
- License Suspension: 180 days
This is a felony charge, and Texas law takes child passenger safety very seriously. Having a child in the vehicle significantly increases the penalties for driving under the influence.
5. Aggravating Factors and Enhanced Penalties
In addition to the standard penalties, certain aggravating factors can enhance the penalties for a DUI in Texas. These include:
- Accidents resulting in injury or death: If you cause an accident while under the influence that results in injury or death, you could face felony charges, including lengthy prison sentences and hefty fines.
- Refusing a chemical test: Texas has an “implied consent” law, meaning that by driving on the state’s roads, you agree to submit to a chemical test if requested by law enforcement. Refusing a breathalyzer or blood test can result in automatic license suspension and can be used as evidence against you in court.
DUI and Field Sobriety Tests in Texas
When pulled over by a police officer on suspicion of DUI, the officer may ask you to perform one or more field sobriety tests. These tests are used to determine whether you’re impaired and whether a DUI arrest is warranted. The most common tests include:
- Horizontal Gaze Nystagmus (HGN): This test involves the officer asking you to follow a pen or flashlight with your eyes. They look for involuntary eye movements that suggest impairment.
- Walk-and-Turn: You will be asked to walk heel-to-toe along a straight line, turn around, and return to the starting point. Difficulty with balance or following instructions may indicate impairment.
- One-Leg Stand: You are asked to stand on one leg for 30 seconds. If you lose balance, it can be a sign of intoxication.
Although these tests are used as evidence in DUI cases, they are not always accurate. Various factors, such as medical conditions, weather, or nervousness, can affect the results. In some cases, a failed field sobriety test may not result in a DUI conviction, especially if other evidence is lacking.
What to Do If You’re Arrested for DUI in Texas
If you’re arrested for DUI in Texas, the process can be intimidating, but it’s important to know what to do:
1. Cooperate with the Officer
While you have the right to remain silent, it’s important to stay calm and cooperate with the police officer. Being hostile or uncooperative can make the situation worse.

2. Submit to Chemical Testing
If you’re asked to submit to a breathalyzer or blood test, refusing can result in an automatic license suspension for up to one year. It’s typically better to comply with the officer’s request to avoid further legal complications.
3. Contact an Attorney
If you are arrested for DUI, contacting an experienced DUI attorney is crucial. An attorney can help you understand your rights, analyze the evidence, and develop a defense strategy. In some cases, your lawyer may be able to negotiate a plea deal or get the charges reduced or dismissed.
4. Attend Court Hearings
If you are charged with DUI, you will have to attend a court hearing. Your attorney will represent you during this process, but it’s important to show up on time and prepared.
How to Avoid DUI in Texas
The best way to avoid the consequences of DUI in Texas is to prevent it altogether. Here are some tips:
- Designate a Driver: Always have a designated driver if you plan to drink. This is the safest and easiest way to avoid a DUI.
- Use Ride-Sharing Services: If you’re intoxicated and don’t have a designated driver, use services like Uber or Lyft to get home safely.
- Don’t Drive After Taking Prescription Medication: Even prescription medications can impair your ability to drive. Always read the labels and follow your doctor’s instructions.
Conclusion
DUI in Texas is a serious offense with severe consequences that can impact your life in many ways. Understanding Texas DUI laws is essential to avoid the risks of a DUI conviction. If you’re caught driving under the influence, the penalties can be harsh, especially if you have prior offenses or aggravating factors like a child passenger.
The best way to protect yourself from a DUI conviction is to make responsible choices before you drive. Always plan ahead and use safe transportation options if you plan on consuming alcohol or drugs. If you do find yourself in trouble, make sure to contact an experienced DUI attorney who can guide you through the legal process and protect your rights.