In Texas the offense San Antonians think of as "DUI" is legally driving while intoxicated, DWI, under Penal Code §49.04, defined as operating a motor vehicle in a public place while intoxicated, meaning a blood or breath alcohol concentration of 0.08 or higher OR the loss of normal use of mental or physical faculties from alcohol or drugs. True "DUI" in Texas is a narrower, minor-only offense under Alcoholic Beverage Code §106.041, charged when a driver under 21 has ANY detectable amount of alcohol. A first DWI is a Class B misdemeanor (up to 180 days), a second is Class A, and a third is a third-degree felony; enhancements raise the stakes fast, a BAC of 0.15 or higher makes a first offense a Class A misdemeanor (§49.04(d)), a child passenger under 15 makes it a felony (§49.045), and an intoxicated crash that seriously injures or kills someone becomes intoxication assault (§49.07) or intoxication manslaughter (§49.08). San Antonio DWI cases are worked by SAPD's traffic and DWI units and the Texas Department of Public Safety on the highways, and prosecuted by the Bexar County District Attorney in the county courts at law (misdemeanors) and district courts (felonies) at the downtown court campus. The city's downtown, the River Walk, the Pearl District, and the St. Mary's Strip nightlife concentrate stops, and Bexar County's participation in no-refusal enforcement means a blood warrant is routinely obtained when a driver refuses to test.
A DWI arrest launches two separate cases at once, and missing the deadline on the civil one costs you your license before the criminal case is even heard. The Administrative License Revocation (ALR) is a civil proceeding run by the Texas Department of Public Safety: refusing a breath or blood test, or failing one (0.08 or higher), triggers a driver's-license suspension, and you have only 15 DAYS from the date of the notice (the pink form the officer serves) to REQUEST an ALR hearing, or the suspension takes effect automatically on the 40th day. Requesting the hearing not only preserves your license pending the outcome but also gives the defense an early, sworn look at the arresting officer's testimony, a valuable discovery tool for the criminal case. A first refusal generally carries a 180-day suspension, a first failure 90 days, with longer periods for prior alcohol enforcement contacts. During a suspension, an occupational (essential-need) driver's license can be sought through the court to allow driving for work, school, and household duties, and an ignition interlock device may be required as a condition. For a service member, a cleared contractor, or a commercial-driver's-license holder, these consequences ripple far beyond the courtroom.
The criminal DWI case turns on the quality of the State's evidence, and San Antonio's no-refusal practice makes blood cases the norm. The stop itself must rest on reasonable suspicion, and the arrest on probable cause; the standardized field-sobriety tests (the horizontal-gaze-nystagmus, walk-and-turn, and one-leg-stand) have strict administration protocols that officers do not always follow, and video from SAPD body-worn and dashcam systems frequently shows a driver performing better than the report claims. Breath testing on the Intoxilyzer and blood testing at a lab both have documented weaknesses, maintenance and calibration records, the qualifications of the blood draw, chain of custody, and the possibility of fermentation or contamination in the sample, and a blood warrant must be supported by a valid affidavit. The criminal deadlines are set by the court, but the defense investigation, preserving the in-car and body-cam video, the maintenance logs, the dispatch records, and any surveillance from the bar or parking lot where the driver was last seen, has to begin within days before footage is overwritten. Refusing all testing does not avoid a case; it simply shifts the State toward a warrant-drawn blood result and an ALR refusal suspension, which is why the 15-day ALR request and an early defense evaluation both matter.
Penalties and long-term consequences extend well past any fine or jail term. Beyond the statutory punishment, a Texas DWI conviction historically triggered a "driver responsibility" surcharge regime (since repealed) and still carries steep insurance consequences, mandatory state fees, DWI-education classes, and possible interlock and community supervision. A DWI generally CANNOT be expunged after a conviction, which is why the disposition matters so much; since 2019, Texas has allowed deferred adjudication for a first-time DWI under limited conditions (generally a BAC under 0.15 and interlock compliance), which avoids a final conviction and can later support an order of nondisclosure that seals the record from private background checks. That sealing is meaningful in San Antonio, where employers, the military, cleared-contractor security offices, hospitals, school districts, and CDL employers all run checks. For a noncitizen, a single DWI is not automatically deportable but can undermine DACA, naturalization good-moral-character findings, and discretionary relief, and a felony-level intoxication offense is far more dangerous; for a service member, a DWI can trigger command action and clearance review independent of the court result.
Ordinary traffic matters run through a different door: Class C moving violations and city-ordinance offenses committed in San Antonio are handled by the San Antonio Municipal Court, while citations issued on the highways or in unincorporated Bexar County go to a justice of the peace court. Most tickets can be resolved by requesting a driving-safety (defensive-driving) course to dismiss the citation, by seeking deferred disposition (a form of probation that ends in dismissal and keeps the offense off your record), or by contesting the ticket at trial; simply paying the fine is a conviction that adds to your record and your insurance. Texas uses a points-and-surcharge history for repeat offenders, and accumulating convictions can lead to a license suspension, while driving with an invalid or suspended license (Transp. Code §521.457) or without insurance compounds the problem. Commercial-driver's-license holders, numerous in a freight and logistics hub, face stricter rules, cannot take deferred disposition to mask a violation, and risk disqualification from serious or repeat offenses, which threatens a livelihood. For unpaid old tickets, the Municipal Court periodically offers amnesty and payment plans, and a warrant for an unpaid citation can surface at any traffic stop or jail booking, so resolving them, and using dismissal options rather than quiet guilty pleas, protects both your record and your ability to keep driving for work.
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