DWI Lawyer or General Criminal Defense Lawyer?

What Makes a DWI Different From Other Misdemeanors

Most misdemeanors are one case, decided on what people saw and said. A DWI is two cases, and one of them is decided largely on a number produced by a machine.

The first difference is the split. A DWI arrest starts a criminal case in a criminal court and a separate civil case against your driver’s license, brought by the Department of Public Safety and heard by an administrative judge. They run on different clocks, under different burdens of proof, and they can end differently. You can win one and lose the other. That structure is set out on A Texas DWI Arrest Creates Two Separate Cases.

The second difference is the evidence. In a typical misdemeanor the contested facts are human: who did what, who saw it, who is credible. In a DWI the State usually puts a laboratory result or a breath instrument reading in front of the jury and calls it science. Testing a number is a different skill from testing a witness, and it is what the rest of this page is about.

The Forensic Half of the Case

Challenging a chemical result is document work before it is argument. The number itself is the end of a long paper trail, and the trail is where a case is made or lost.

On a blood case, the result comes from a laboratory method called headspace gas chromatography. A defense review means reading the actual chromatogram rather than the one-line report, checking the instrument’s calibration records, and requesting the calibration certificates for the pipettes used to prepare the sample, because records showing equipment that was out of calibration go directly to whether the reported number can be relied on. It also means tracing the sample’s handling from the draw to the bench, since gaps in that chain and the use of non-standard collection tubes are both live issues. That work is described on Challenging the Blood Test.

On a breath case, the record set is different but the logic is the same. The maintenance and calibration history of the instrument, the certificates behind the reference solution used to check it, whether a certified operator ran the test, and whether the required observation period before the sample was actually kept are all documented somewhere, and all of them are obtainable. What that record set contains is covered on The Intoxilyzer 9000.

None of that requires a lawyer to be a chemist. It requires a lawyer who knows the records exist, requests them as a matter of routine, and can tell when what came back does not add up.

The License Half of the Case

The license case has a feature no other part of a DWI has: it can be lost by doing nothing at all.

When notice of suspension is served, a short window opens to request an administrative hearing. If no request is made inside it, the suspension takes effect on schedule. No judge weighs it, nobody argues the other side, and the outcome arrives on its own. The deadline runs whether or not anyone is watching it, which is why the first question worth asking any lawyer is what they are doing about it this week. The mechanics are on The 15-Day Rule.

Requesting the hearing is only the opening step. The hearing request and the discovery request go to different places and have to be made separately, and what comes back has to be worked through for the kind of paperwork defect that decides these cases. Handled well the license case does double duty: it is often the first chance to question the arresting officer under oath, months before the criminal case reaches a contested setting, and that testimony is recorded. See The ALR Hearing.

A practice that treats the license case as paperwork gives up both the license and the early look at the State’s case.

The Field Sobriety Battery Is a Written Protocol

The roadside tests are not a judgment call the officer gets to make freely. They are a standardized battery developed under the National Highway Traffic Safety Administration, with written administration and scoring procedures, and the officer was trained out of a manual that says how each one is to be given.

That written protocol is what makes cross-examination possible. When the administration departs from the manual, the departure is checkable against the manual itself rather than being one person’s opinion against another’s. The underlying validation research is also fair game, and it is less flattering to the tests than the roadside presentation suggests: in NHTSA’s own studies, meaningful numbers of subjects below the legal limit still produced multiple scored clues on each test in the battery.

A lawyer who has read the manual and the research cross-examines differently from one who has not. What the three tests are and how each is scored is on Field Sobriety Tests.

Can Any Licensed Lawyer Handle a DWI?

Yes. As a matter of law, any attorney licensed by the State Bar of Texas and in good standing may accept a DWI case and appear in any Texas court on it. There is no separate DWI license and no credential you are required to have. Saying otherwise would be false.

So the question is not permission. It is workload and habit. The work described above is real work: records requested on a schedule, a hearing calendared inside a short window, a chromatogram actually read, a manual actually consulted. A practice that does DWI cases occasionally can do all of it, and some do. A practice that does not do it will still handle the charge competently and will simply take the State’s number at face value, because there is no way to argue with a number you have not examined.

That is the difference, and it is a difference in what gets done rather than in who is allowed to do it.

What to Look For Instead of a Label

“DWI lawyer” is a description anyone may use. It is not a regulated title, so it tells you less than it appears to.

The checkable substitutes are specific. Ask what training the lawyer has in the breath instrument and in the laboratory method used on blood. Ask whether the license hearing is part of the representation or billed separately. Ask what records they request as a matter of course, and listen for whether the answer is a list or a reassurance. Which credentials in this field mean something and which are decoration is worked through on What DWI Lawyer Credentials Actually Mean.

When a General Practice Is Enough

Sometimes it is, and a page that would not say so is not worth reading.

Not every DWI turns on chemistry. Where there is no test result at all, the case is about the stop, the observations, and the roadside tests, and a capable general criminal defense practice that regularly appears in that court is on familiar ground. Where the decisive question is whether the stop was lawful, that is a suppression issue like any other.

What matters is the checklist, not the label. If the practice you are talking to handles the license case, obtains the records behind any test result, and can tell you what it would look for in them, the specialty question has answered itself. If it cannot, the label would not have fixed that.