What You Are Entitled to See in a Texas DWI Case

Two Separate Entitlements

Almost every explanation of DWI discovery mentions one statute. There are two, and they do different work.

Article 39.14, the Michael Morton Act. A criminal procedure statute. It reaches the State’s file: offense reports, witness statements, and material evidence in the prosecution’s possession. It applies to every criminal case in Texas, not just DWI.

Transportation Code 724.018. A traffic statute that exists because of chemical testing. On the request of a person who has given a specimen at the request of a peace officer, full information concerning the analysis of the specimen must be made available to that person or that person’s attorney.

The second one matters because it is aimed at the analysis, not at the file. A prosecutor who has produced everything in the prosecution file has satisfied one entitlement and not necessarily the other, because a laboratory’s underlying data is often not sitting in the district attorney’s file at all.

What the Michael Morton Act Requires

The Michael Morton Act became effective on January 1, 2014 and applies to offenses occurring on or after that date. Before it, discovery was whatever your county happened to do. Some counties had an open-file policy that let defense counsel copy the file. Some let counsel read the file and take notes. Some would show nothing and read selected portions aloud at a setting.

Now the statute requires the State, as soon as practicable after receiving a timely request, to permit the defense to inspect and copy offense reports, designated documents and written or recorded statements of the defendant or a witness including statements of law enforcement officers, and other designated tangible things not otherwise privileged that are material to the case and in the State’s possession, custody, or control. The State’s own work product is excluded. The defense no longer has to go to the court and show good cause first.

Two provisions do quiet work. If the State withholds or redacts part of something, it has to tell the defense it did, and on request the court has to hold a hearing on whether that was justified. And regardless of anything else in the statute, the State must disclose any exculpatory, impeachment, or mitigating material that tends to negate guilt or reduce punishment.

Note the phrase “as soon as practicable.” That is the whole timing problem in four words, and what it means in practice varies by county.

What Full Information Concerning the Analysis Should Mean

This is the argument, and it should be read as an argument rather than as settled law.

Transportation Code 724.018 does not say the result. It says full information concerning the analysis. The reading the Texas DWI Manual advances is that full information means the defense gets an ample opportunity to inspect every aspect of the blood draw, the blood storage, and the testing performed on the specimen at issue, and not merely the page with the number on it.

That reading is contested. Prosecutors and laboratories do not always accept it, and how far it reaches is the sort of question that gets fought about case by case rather than answered once. But it is the reason a defense request in a chemical test case looks nothing like a request for a police report.

Track One: The Prosecution File

This is the track everyone knows: the offense report, any supplements, witness statements including officers’ statements, the criminal history the State intends to use, and the charging instrument with its supporting complaint.

It is also the track that sets expectations badly, because it arrives comparatively quickly and looks complete. It is not the evidence in a chemical test case. It is the narrative about the evidence.

Track Two: The Video

Dash camera, body camera, jail intake, and booking video are separate from the report and often held by a different agency than the one prosecuting.

This track is urgent in a way none of the others are, because video is the only category of evidence that can disappear on a schedule while everyone waits. Retention policies run on their own clock and do not pause because a case is pending. The mechanics of requesting and preserving it are on Video and Evidence Preservation.

Track Three: Breath Test Records

A breath result is one number on a slip of paper. The records behind it run to a stack, and the certificate of calibration and any other document used to validate compliance must be traceable to the National Institute of Standards and Technology.

A complete request reaches the instrument’s calibration certificate, its inspection documents for the year before and the year after the arrest, and the inspection protocol used. It reaches the wet bath simulator attached to the instrument at the time of the test, including its calibration certificate and any repair records, plus the simulators used during the instrument’s own calibration and verification. It reaches the manufacturer’s certificate of assurance for the alcohol reference solution used in the control test and in calibration, and any analysis the Department of Public Safety ran on that solution. It reaches the instrument’s stored data, including records of every test and inspection on that serial number and every error message it generated. And it reaches the operator: certification and recertification, the training manual used, and proficiency testing results.

One point is worth knowing before you see the slip. The instrument records information Texas leaves off the printed result, including when the observation period started and ended, whether the operator confirmed nothing was in the subject’s mouth, whether the subject was observed not to have burped or vomited, and the uncertainty measurement for the result. What those records mean is covered on Intoxilyzer 9000 Problems.

Track Four: Blood Records

A blood case has the longest request list, because every step between an arm and a chromatogram is a step where something can go wrong.

The request covers the draw: who drew the blood and for what employer, and if a warrant was involved, which judge signed it and how it was obtained. It covers the chain: every person who had possession of the specimen, and the date and time the blood was drawn, transported, stored or refrigerated, and logged in at the laboratory. It covers the kit itself, including the type of kit and its lot information, because the tube’s anticoagulant and preservative are what stand between a stored sample and fermentation. And it covers the laboratory: standard operating procedures, analyst records, and the chromatograms rather than the summary report.

What each of those is for belongs to How Blood Testing Works in a Texas DWI Case and In Vitro Fermentation. This page is about getting the material. Those pages are about what it shows.

The ALR File Arrives First

Here is the part almost nobody explains, and it is a genuine advantage.

The license case has its own discovery process, and it runs faster than the criminal one. A written discovery request goes to the Department of Public Safety, and on receipt of a proper request DPS has to respond with its documents within five days, or state in writing within five days that it has no documents at that time. DPS then carries a continuing duty to supplement. If DPS fails to provide discovery at least 10 days before the scheduled hearing, the administrative law judge may grant a continuance, though only once.

Compare that to “as soon as practicable” on the criminal side. The administrative file frequently lands first, which means a case can be evaluated before the criminal discovery arrives, and the hearing itself puts the arresting officer under oath and under cross-examination early. That is why the license case is worth contesting even when the license outcome alone would not justify it. See The ALR Hearing.

Why Discovery Takes So Long

Three reasons, and only one of them is anybody’s fault.

Requested is not produced. The statute triggers on a timely request and then runs on “as soon as practicable.” A request filed the week of arrest and a request filed two months later are not in the same position.

Agencies are not one entity. The prosecutor’s file, the arresting agency’s video, the breath instrument’s records held by a technical supervisor, and the laboratory’s data are four different custodians with four different response times.

The laboratory sets the pace in a blood case. Nothing meaningful can be negotiated before a report exists, and nothing can be challenged before the underlying data exists.

What You Personally Can Request

Two things are worth separating.

Transportation Code 724.018 is written to run to the person who gave the specimen or that person’s attorney, which is unusual: most criminal discovery runs through counsel only. Article 39.14 is a defense entitlement exercised through the case, and it carries restrictions, including that material generally is not removed from the State’s possession and that inspection happens in the presence of a State representative.

In practice, the useful thing you can do yourself is not filing requests. It is telling your lawyer what exists, early: which agency stopped you, where you were taken, whether you were tested and how, whether there were cameras, and who else was present. A request cannot ask for something nobody knows about.

Frequently Asked Questions

What is discovery in a DWI case in Texas?

It is the process of obtaining the State’s evidence. Two entitlements apply: Article 39.14 reaches the prosecution file, and Transportation Code 724.018 reaches full information concerning the analysis of any breath or blood specimen you gave.

What is the Michael Morton Act in Texas?

Article 39.14 of the Code of Criminal Procedure, effective January 1, 2014. On a timely request, the State must permit the defense to inspect and copy offense reports, witness statements, and material evidence in its possession, and must disclose exculpatory, impeachment, or mitigating material regardless.

How do I get the police report for my DWI?

Through a discovery request under Article 39.14, made by your lawyer. The offense report is expressly covered by the statute, and it is usually among the first things produced.

Can I get the dash cam video?

Video is reachable, but it sits with the arresting agency rather than the prosecutor and it is subject to retention schedules that run whether or not a case is pending. That makes it the one category where timing genuinely matters. See Video and Evidence Preservation.

What is Article 39.14?

The Texas criminal discovery statute, better known as the Michael Morton Act. It replaced a county-by-county patchwork in which some prosecutors opened their files, some allowed notes only, and some read portions aloud.

What is Transportation Code 724.018?

A separate entitlement: on the request of a person who gave a specimen at a peace officer’s request, full information concerning the analysis must be made available to that person or their attorney. It is aimed at the analysis rather than at the prosecution file.

How do I get my blood test records?

Through a request that names them specifically. The list runs from the draw and the kit lot through the chain of custody and storage logs to the laboratory’s standard operating procedures, analyst records, and the chromatograms rather than the summary report.

Can I get the calibration records for the Intoxilyzer?

Yes, and they are a category rather than a document. The certificate of calibration and the documents validating compliance must be traceable to NIST, and the request also reaches simulator certificates, reference solution certificates, inspection records, instrument error logs, and the operator’s certification and proficiency records.

How long does discovery take in a DWI case?

Longer than the statute’s language suggests, because “as soon as practicable” is elastic and because four different custodians hold the four tracks. In a blood case the laboratory sets the pace, and nothing can be meaningfully evaluated before its report and underlying data exist.

What does my lawyer get from the DA?

The prosecution file: offense report and supplements, witness statements including officers’ statements, criminal history, and the charging instrument. What the district attorney’s office holds is usually not the same as what the laboratory or the breath instrument’s technical supervisor holds, which is why the other three tracks exist.