DWI Defense
The science and law behind every DWI — blood and breath testing, the NHTSA field sobriety tests, and retrograde extrapolation. Written by attorneys who teach this material, including the first in Texas to pass the Forensic Sobriety Assessment Certification exam.
Latest in DWI Defense
Ask Deandra: Can I Get a DWI for Marijuana or Edibles in Texas?
texasdwisite.com/blog/ — Prepared June 2026 By Deandra Grant, J.D., M.S. (Pharmaceutical Science), ACS-CHAL Forensic Lawyer-Scientist The question: Can I get a DWI for marijuana or edibles in Texas? The short answer: Yes.…
Ask Deandra: What’s the Difference Between a DWI and a DUI in Texas?
By Deandra Grant, J.D., M.S. (Pharmaceutical Science), ACS-CHAL Forensic Lawyer-Scientist The question: What’s the difference between a DWI and a DUI in Texas? The short answer: In Texas, DWI and DUI are…
Ask Deandra: How Do Police Prove a Drug-Based DWI Without a Blood Test?
The question: How do police prove a drug-based DWI without a blood test? The short answer: They do it through observation, blood testing, and a (theoretically) specially trained officer called a Drug…
The Complete Guide to Court-Ordered Alcohol Monitoring Devices in Texas DWI Cases
SCRAM, Ignition Interlock, Soberlink, and the New Wave of Wearables — What They Are, Who Makes Them, and Where the Science Breaks Down By Deandra Grant, J.D., M.S. (Pharmaceutical Science), ACS-CHAL Forensic…
Ask Deandra: Can I Be Arrested for DWI in Texas if I’m Under 0.08?
The question: Can I be arrested for DWI in Texas if my BAC is under 0.08? The short answer: Yes. The 0.08 blood alcohol concentration limit is one way Texas defines intoxication…
Ask Deandra: Should I Answer the Officer’s Questions After a DWI Arrest?
The question: Should I answer the officer’s questions after a DWI arrest? The short answer: Almost never beyond identifying yourself. After a DWI arrest, you must provide your name, date of birth,…
Ask Deandra: Do I Have to Take a Field Sobriety Test in Texas?
The question: Do I have to take a field sobriety test in Texas? The short answer: No. Field sobriety tests are voluntary in Texas. You are not required to perform them, you…
Ask Deandra: What Should I Do If I’m Pulled Over and the Officer Thinks I’m Drunk?
The question: What should I do if I’m pulled over and the officer thinks I’m drunk? The short answer: Be polite. Pull over safely. Provide your driver’s license, registration, and insurance when…
Ask Deandra: Should I Fight My DWI in Texas?
By Deandra Grant, J.D., M.S. (Pharmaceutical Science), ACS-CHAL Forensic Lawyer-Scientist The question: Should I fight my DWI in Texas? The short answer: In almost every case, yes. A DWI conviction in Texas…
Ask Deandra: How Long Does a DWI Stay on My Record in Texas?
By Deandra Grant, J.D., M.S. (Pharmaceutical Science), ACS-CHAL Forensic Lawyer-Scientist The question: How long does a DWI stay on my record in Texas? The short answer: Forever, unless it is sealed or…