What You Need to Know About Implied Consent Laws in Texas

March 21, 2025

As a Texas driver, you have the responsibility to comply with implied consent laws following an arrest for DWI. 

Key Takeaways:

  • Implied consent laws dictate that you must submit to chemical tests, including blood, breath, and urine tests, following an arrest for DWI.

  • If you refuse these tests following an arrest, you will be subject to consequences such as license suspension and elevated penalties if you are ultimately arrested.

  • Underage drivers and commercial drivers are subject to even more stringent implied consent laws.

If you've been arrested on suspicion of driving while intoxicated (DWI) in Texas, you may have heard the term "implied consent laws." But what exactly do these laws mean, and how do they affect your case? Understanding implied consent laws is crucial for anyone facing a DWI charge, as it directly impacts how law enforcement can handle your arrest and what rights you have during the process. 

The attorneys of BRCK are dedicated to helping people understand their legal rights on the road. In this blog, we'll break down the essential elements of implied consent laws in Texas and explain how they might influence your defense strategy if you have been charged with DWI. 

What Are Implied Consent Laws?

Implied consent laws refer to the legal principle that by driving a vehicle on public roads, you are implicitly agreeing to submit to certain tests if law enforcement suspects you of being under the influence of alcohol or drugs. In Texas, implied consent laws primarily relate to chemical tests used to determine blood alcohol content (BAC) or the presence of drugs in a driver's system. These tests are typically in the form of a breath test, blood test, or urine test.

By accepting the privilege of driving in Texas, drivers consent to these tests when legally arrested by a law enforcement officer. Refusal to take a chemical test following an arrest could result in severe penalties, even if you're ultimately not convicted of a DWI. It’s important to note that you do not have to submit to a breath test or a field sobriety test during a stop if you have not been placed under arrest. 

It is also important to note that implied consent does not mean that drivers lose their rights to contest the results or their rights to a fair legal process. Rather, it is an acknowledgment that refusal to comply with these tests can lead to consequences outside the scope of a DWI conviction itself.

Understanding the Consequences of Refusing a Test

One of the most important aspects of implied consent laws in Texas is the penalty for refusing to take a chemical test. If an officer places you under arrest under suspicion of driving under the influence, they will likely request a breathalyzer, blood, or urine test. If you refuse, you could face the following consequences:

  • License Suspension: Refusing to take a chemical test will result in an automatic driver's license suspension, typically lasting for 180 days for a first offense. For subsequent refusals, the suspension period may be longer.

  • Increased Penalties for DWI: In some cases, refusing a chemical test can be used as evidence of guilt in court. The prosecution may argue that you refused the test because you knew you were intoxicated. While the refusal itself is not proof of intoxication, it can still be a significant factor in a DWI case.

  • Hardship Licenses: Depending on the specifics of your case, you may be able to apply for a hardship license, which allows you to drive for certain purposes, like work or school, during the suspension period. However, obtaining this license requires going through an additional process and may not be granted in all situations.

The Importance of Understanding Your Rights

While implied consent laws may seem straightforward, there are important nuances you need to understand in order to protect your rights effectively. You still have the right to refuse a chemical test, but doing so carries significant consequences, as we've discussed.

However, understanding when you can refuse the test or contest the results is critical. For example, if law enforcement does not have probable cause to arrest you or if they do not inform you of the penalties for refusing a test, you may have grounds to challenge the validity of the arrest or the refusal penalty.

What Happens if You Agree to the Test?

If you agree to take the chemical test, the results will be used in your DWI case. In Texas, if your BAC is above the legal limit of 0.08%, you could be charged with DWI. However, even if you take the test and are below the legal limit, other factors can affect your case, such as the presence of drugs or your overall level of impairment.

If your BAC is above the legal limit, or if drugs are detected, the evidence from the chemical test will play a significant role in the prosecution's case. However, it’s important to remember that this evidence can be challenged in court. Issues such as improper handling of the test sample or inaccuracies in testing procedures can sometimes lead to favorable outcomes for the defendant.

What Happens if You Are Underage or Have a Commercial Driver's License?

Texas has stricter implied consent laws for underage drivers and commercial drivers. Here are the key differences:

  • Underage Drivers: Drivers under the age of 21 are held to a stricter standard regarding alcohol consumption. If an underage driver is suspected of being under the influence, they can be asked to take a chemical test, and a BAC of 0.01% or higher can result in penalties.

  • Commercial Drivers: Commercial drivers have even more stringent rules when it comes to implied consent laws. For commercial drivers, the legal BAC limit is 0.04%, which is lower than the standard 0.08% for regular drivers. Refusing a chemical test can result in the suspension of your commercial driver’s license (CDL) and other penalties.

How Implied Consent Laws Affect Your DWI Defense

Implied consent laws are an important aspect of any DWI case in Texas. If you refuse to take a chemical test, your license will be suspended, and the prosecution may use your refusal against you in court. However, just because you’ve been arrested under implied consent laws doesn’t mean you don’t have options. A skilled criminal defense lawyer can help you navigate the consequences of your refusal, challenge the validity of the test results, or dispute the evidence used against you.

At BRCK Criminal Defense Attorneys, we focus on building strong defense strategies for those facing DWI charges. Our team understands the complexities of implied consent laws and will fight for your rights every step of the way.

How Can BRCK Criminal Defense Attorneys Help?

If you’re facing charges related to implied consent laws, it’s crucial to have an experienced attorney by your side. The team of dedicated criminal defense lawyers at BRCK can help you understand your options, guide you through the legal process, and provide strong defense strategies to protect your future. Whether you’ve been arrested for DWI or are facing consequences for refusing a chemical test, we are here to help. Reach out to BRCK Criminal Defense Attorneys today to schedule a free consultation and begin building your defense.