Texas Implied Consent Law: What It Means and What Happens If You Refuse

What the implied consent law actually says

Texas Transportation Code section 724.011 provides that any person who operates a motor vehicle in a public place is deemed to have consented to giving one or more specimens of breath or blood if they are lawfully arrested for DWI. That is the implied consent law. Three points are worth stating precisely, because they are the ones most often misunderstood.

The consent is implied at the time of arrest, not the time of driving. Implied consent attaches when a person is lawfully arrested for DWI, not when they are first stopped. A traffic stop alone does not trigger any implied consent obligation. The lawful arrest is the predicate, which is why the lawfulness of the stop and arrest matters so much.

It covers breath or blood only. Urine is not an authorized specimen type under Texas’s implied consent statute. The choice between breath and blood has its own rules and strategy, but urine is not part of the Texas DWI testing framework.

It does not let the government take a specimen without a warrant. A driver can refuse. The consequences of refusing are significant, but refusal does not authorize a non-consensual blood draw. After a refusal, officers must obtain a search warrant to compel blood.

The DIC-24 warning: a mandatory step the officer cannot skip

Before requesting a specimen after a DWI arrest, the officer must read you the DIC-24 statutory warning, an advisement of the consequences of refusing and of providing a specimen. This is not a courtesy. It is a mandatory requirement under Texas Transportation Code section 724.015, and it has to be given in a language you understand.

The DIC-24 must tell you that refusing will result in a license suspension of at least 180 days, that the suspension is two years if you have a prior conviction or prior refusal, and that evidence of your refusal can be used against you in a criminal case.

Here is why this matters for the defense: failing to properly administer the DIC-24 is a complete defense to the refusal suspension. If the officer did not give the warning, gave it inaccurately, or gave it in a language you could not understand, the administrative license suspension for refusal cannot stand. That is not a loophole. It is an explicit statutory requirement the state has to satisfy, and reviewing exactly how the DIC-24 was given is part of the analysis in every refusal case.

What refusing actually triggers

When a driver refuses a breath or blood test after a lawful arrest and a proper DIC-24 warning, Texas DPS starts an Administrative License Revocation. The ALR case is civil and administrative, so it runs entirely separately from the criminal DWI case, and the refusal also becomes evidence the prosecutor can use at trial.

The refusal suspension periods are:

• First refusal: 180-day suspension. By comparison, a failed test on a first offense is a 90-day suspension, so refusing produces the longer suspension, not the shorter one.
• Second or subsequent refusal, or refusal with a prior DWI conviction: two-year suspension.
• Commercial license holders: a refusal-based suspension triggers a one-year CDL disqualification, even if you were not driving a commercial vehicle at the time.

Because the suspension begins through the ALR process, the most urgent thing after a refusal is the 15-day deadline to request an ALR hearing. Miss it and the suspension takes effect automatically.

The piece of paper you get on a refusal

When you refuse, the officer hands you a notice of suspension (commonly the DIC-25 form). Do not throw it away. That single page does two important things at once: it serves as your temporary driving permit, usually good for about 40 days, and it starts your 15-day clock to request an ALR hearing. The DIC-24 you were read out loud is the warning; this notice is the document that actually begins your license case, so keep it and get it to your lawyer right away.

Refusing field sobriety tests is not the same thing

People often confuse implied consent with the roadside tests, so this distinction is worth stating plainly. There is no Texas statute requiring you to perform standardized field sobriety tests, and there is no ALR consequence for declining them. The same is true of the roadside portable breath test (PBT), the small handheld device offered before arrest. The PBT is not the implied consent test, its result is not admissible as proof of your BAC, and declining it carries no automatic suspension.

In short, the implied consent obligation is the official breath or blood test that comes after a lawful arrest. The field sobriety tests and the roadside PBT before arrest are voluntary, and declining them does not trigger an implied consent penalty, on a no refusal weekend or any other night.

Where implied consent cases are actually challenged

The questions that decide implied consent cases are specific and fact-driven, not abstract. The challenges that succeed are grounded in what happened in the individual case.

• Was the stop lawful? Implied consent attaches only to a lawful arrest, and a lawful arrest depends on a lawful stop. If the officer lacked reasonable suspicion to make the stop, the chain that follows is tainted, and under Article 38.23, which has no broad good-faith exception, the evidence that follows can be suppressed, including the test result, the DIC-24, and the refusal itself.
• Was the DIC-24 properly administered? Whether it was given, whether it was complete, and whether it was given in a language you understood are factual questions in every refusal case.
• Was there probable cause for the arrest? The arrest must be supported by probable cause built from observations, odors, statements, and field sobriety tests.
• Was the blood warrant legally sufficient? When officers seek a blood draw warrant, the affidavit has to establish probable cause. A defective affidavit can produce a suppressible draw, and under Franks v. Delaware the defense can challenge the truthfulness of the affidavit itself.

A test result is not the end of the case

If you did provide a specimen, the result is evidence, but it is not automatically the last word. Breath results from the Intoxilyzer 9000 can be challenged on calibration, the 15-minute observation period, partition ratio variability, and the operator’s compliance with protocol. Blood results can be challenged on collection, storage, chain of custody, and lab methodology.

This is where the firm’s forensic training matters. Deandra Grant holds the ACS-CHAL Forensic Lawyer-Scientist designation, a Master of Science in Pharmaceutical Science, and a Graduate Certificate in Forensic Toxicology, and Partner Douglas Huff holds the same ACS-CHAL designation. Chemical test results in the firm’s cases are evaluated at the analytical-chemistry level, not just checked against procedural boxes.

Frequently Asked Questions

Can I refuse a breath or blood test in Texas?

Yes. You can legally refuse a breath or blood test after a DWI arrest, but refusal carries consequences. It triggers an automatic license suspension of at least 180 days, the refusal can be used against you at trial, and the officer can obtain a warrant to take your blood by force.

When does implied consent actually apply?

Implied consent attaches at the moment of a lawful arrest for DWI, not at the traffic stop and not while you are driving. A stop alone does not create an implied consent obligation, which is one reason the lawfulness of the stop and arrest is so important.

What is the DIC-24 warning?

The DIC-24 is the statutory warning an officer must read before requesting a breath or blood specimen. It must explain the consequences of refusing and of testing, and it must be given in a language you understand. If it is missing, inaccurate, or given improperly, the refusal-based license suspension can be defeated.

How long is the suspension for refusing?

A first refusal is a 180-day suspension. A second refusal, or a refusal with a prior DWI conviction, is a two-year suspension. A commercial license holder also faces a one-year CDL disqualification, even if they were not driving a commercial vehicle.

Does Texas implied consent cover urine tests?

No. Texas implied consent covers breath or blood only. Urine is not an authorized specimen type under the statute.

If I refuse field sobriety tests, is that the same as refusing under implied consent?

No. Field sobriety tests and the roadside portable breath test before arrest are voluntary, and declining them carries no automatic license suspension. Implied consent applies to the official breath or blood test after a lawful arrest, which is a separate thing.

Can police still get my blood if I refuse?

Yes. After a refusal, officers can apply for a search warrant for a forced blood draw, and certain narrow circumstances allow a mandatory draw. A refusal does not end the case, which is why the warrant affidavit is often a key place to challenge the evidence.

What is the paper the officer gave me after I refused?

It is usually a notice of suspension (the DIC-25). It works as a temporary driving permit for about 40 days and it starts the 15-day deadline to request an ALR hearing. Keep it and give it to your lawyer.

Refused a Test, or Were Forced to Give One?

Refusal starts a 15-day clock to save your license and raises legal questions that can decide your whole case. Deandra Grant Law has handled DWI refusals across Dallas, Fort Worth, North Texas, and Waco for more than 30 years. Call (214) 225-7117 for a free, confidential consultation. The deadline runs from the date of notice, so do not wait.