DWI Attorney in San Antonio

Direct DWI Defense Backed by ACS-CHAL Forensic Science Training

A DWI arrest in San Antonio moves quickly. You may already be dealing with a license suspension notice, a court date, or a request for chemical testing. When you contact The Rene A. Flores Law Firm, we explain what happens next, identify immediate deadlines, and begin reviewing the evidence behind the charge.

Texas DWI cases can involve a criminal prosecution and a separate Administrative License Revocation process concerning your driver’s license. The evidence may include the traffic stop, officer observations, field sobriety testing, body-camera footage, and chemical testing. These cases rely heavily on science, timing, officer decisions, and procedures followed from the moment of the stop through the final blood or breath test.

Our review can address whether the officer had a lawful basis for the stop, how roadside tests were administered, when a sample was collected, and whether testing procedures support the reported result. We also identify court obligations and license-notice dates that may require prompt action.

Talk directly with our San Antonio DWI attorney today. Call (956) 606-3606 or contact us through our contact form to set up your consultation.

When you’re facing a DWI charge, you need clear information early and dependable access to the person guiding your defense. The Rene A. Flores Law Firm keeps the process straightforward from the first call. You meet with an attorney, receive practical direction about your next steps, and know exactly who you’ll be working with as your case develops. Communication is direct, with attorney involvement as your case develops.

Here is what you can expect from us:

• Free Initial Consultation: A direct conversation with an experienced attorney before you make decisions about how to proceed.
• English & Spanish Communication: Clear explanations in the language you are most comfortable with.
• Direct Representation: Your case is handled by Attorney Rene Flores, the managing attorney and sole practitioner, rather than being rotated among staff.
• Hands-On Case Development: Attorney Flores remains personally involved in reviewing the evidence, discussing decisions, and preparing the defense.

Forensic Science Training Applied to DWI Evidence

Laboratory results are treated as the centerpiece of many DWI cases. The State may point to fermentation-affected BAC numbers, drug screens, or breath-test readings as proof of intoxication. A reported blood alcohol concentration, or BAC, doesn’t answer every question about how the sample was collected, preserved, tested, and interpreted.

Attorney Flores completed the ACS-CHAL Forensic Lawyer-Scientist coursework and passed its certification examination in 2017. This training addresses forensic chromatography, a laboratory method used to separate and measure chemical substances, as well as chemical evidence involving alcohol and drugs. Although the linked credential page describes Attorney Flores as the only attorney in South Texas who has earned the ACS-CHAL Forensic Lawyer-Scientist certification, our defense approach relies on the confirmed certification and its relevance to scientific evidence, not a claim of geographic exclusivity.

Our scientific review may examine:

• Collection Procedures: When and how the breath, blood, or drug-testing sample was obtained.
• Sample Handling: Whether preservation, storage, contamination, or chain-of-custody issues affect the evidence.
• Instrument Records: Whether calibration, maintenance, and quality-control records support the reported result.
• Laboratory Data: Whether the underlying records and testing methods support the number shown in the final report.
• Timing & Interpretation: How the collection timeline and scientific limitations affect the meaning of the alleged BAC or drug result.

Most people only see the final number on the lab report. We examine the data and procedures that produced it. Breath testing, blood testing, and drug testing raise different technical questions, so each form of evidence requires its own review rather than a one-size-fits-all response.

How San Antonio DWI Investigations Are Reviewed

DWI investigations in San Antonio vary depending on the agency involved. SAPD, Bexar County deputies, Texas Department of Public Safety troopers, and task-force units may generate different reports, recordings, policies, and testing records. Knowing which agency conducted the investigation helps us determine what evidence should be requested and reviewed.

Our analysis may cover the reason for the traffic stop, officer observations, field sobriety testing, the arrest decision, video evidence, and chemical sampling. We compare written reports with available recordings and examine whether the procedures described in those reports are consistent with the underlying evidence.

Attorney Flores has practiced criminal defense since opening his practice in 2008. He served as a Municipal Judge for the City of Palmview beginning in 2015 before becoming a city prosecutor in Alamo in 2023. His experience with criminal defense, prosecution, and the courts informs how we evaluate the way a DWI case was investigated and developed.

Types of DWI Charges We Defend in San Antonio

DWI cases range from first-time arrests to complex felony allegations. Each charge carries its own procedures, evidence requirements, and potential consequences. At The Rene A. Flores Law Firm, we defend the following DWI and DUI allegations:

• First-Time DWI: Allegations that often involve roadside testing, body-camera footage, and chemical sampling.
• Multiple or Repeat DWI: Cases where prior convictions can affect the classification, potential penalties, and defense issues.
• Underage DWI: Alcohol-related driving allegations involving drivers under 21, including cases governed by rules that differ from standard adult DWI charges.
• Felony DWI: Charges tied to prior convictions, accidents with injury, or situations involving minors in the vehicle.
• High-BAC Allegations: Cases involving claims of elevated alcohol concentrations that require close review of laboratory data and testing procedures.
• Drug or Combined-Substance DWI: Allegations based on prescription medication, controlled substances, or a combination of alcohol and drugs.
• Commercial Driver DWI: Charges affecting commercial driver’s license holders and their driving privileges.
• Administrative License Revocation Matters: Hearings and suspension challenges connected to a refusal or failed chemical test after a DWI arrest.

The classification and possible consequences depend on the alleged conduct, chemical-test evidence, prior record, and applicable Texas law. We review the specific allegation instead of assuming that every DWI charge should be handled the same way.

Administrative License Revocation & Driving Privileges

Losing the ability to drive can create immediate problems. Work, school, childcare, medical appointments, and basic errands often depend on having a valid license. Administrative License Revocation, commonly called ALR, is a separate process from the criminal DWI case and can involve its own deadlines and decision-maker.

In refusal cases, the Texas Department of Public Safety generally states that a person has 15 days after receiving the suspension notice to request an ALR hearing. Blood-test notice situations can involve a different request period. Because the applicable deadline depends on the notice and circumstances, we review the documents rather than assuming the same timeline applies to every arrest.

We assist with the license process through:

• ALR Hearings: We review the officer’s affidavit, the basis for the stop, and the evidence supporting the proposed suspension. These hearings are conducted through the State Office of Administrative Hearings.
• Suspension Challenges: We examine the notice, reports, test information, and required procedures to identify issues relevant to the proposed suspension.
• Occupational Driver’s License Applications: When appropriate, we can prepare the petition and required documents for the separate court process. Eligibility and permitted driving needs depend on the person’s circumstances and applicable requirements.
• Deadline Management: We track relevant ALR filing requirements and explain the steps associated with the administrative proceeding.

Two Proceedings Can Follow a San Antonio DWI Arrest

A DWI arrest in San Antonio can trigger two separate processes that move on different timelines. The criminal case addresses whether the State can prove the charged offense, while the Administrative License Revocation proceeding concerns the person’s driving privileges. Each process can involve different deadlines, evidence rules, decision-makers, and consequences.

Our criminal-case review considers how driving behavior, roadside testing, officer observations, video, and chemical evidence shape the allegations. For the license proceeding, we examine the suspension notice, the stated basis for the administrative action, and whether a hearing request or occupational driver’s license matter requires attention.

When you work with The Rene A. Flores Law Firm, Attorney Rene Flores addresses the license concerns while preparing the criminal defense. This coordinated approach keeps the two proceedings distinct without overlooking how records developed in one may be relevant to the other.

Get a Prompt Review of Your DWI Case

A free consultation gives you an opportunity to discuss the arrest, court obligations, chemical-test evidence, and any driver’s-license notice you received. You can speak directly with Attorney Flores in English or Spanish and get clear guidance about the next steps that may apply to your situation.

Call (956) 606-3606 or send us a message now to schedule your consultation.