About Us

We Have a Long and Successful History

Platt and Associates is an internationally recognized consulting firm and professional training provider specializing in impaired driving legal cases. Over the course of 16 + years, we have built a reputation for providing honest advice to Prosecution, Defense and Civil lawyers. You can rely on receiving an objective and timely evaluation.

We provide accurate and reliable criminal and civil case file evaluations. Our knowledge extends to the analysis of DUI/DWI testing, field sobriety testing, police procedure including training, human performance, impairment levels and more. A case report is the essential first step in every assignment we accept.

Our qualified experts provide expert witness testimony on evidence uncovered during the entire investigation process. We have appeared as witnesses at hundreds of DWI/DUI proceedings.

We also provide legal practitioners with a wide variety of professional development training including the NHTSA Standardized Field Sobriety Testing (SFST) student practitioner and instructor courses, Drug Recognition and Evaluation (DRE) Course Overview training. Our specialists can provide private training in-house. You don’t have to fly your whole team out to us. We can come to you.




Clients helped


of legal professionals trained

Lance A. Platt, Ph.D.

Founder & President

Lance A. Platt, Ph.D., President and founding partner of Platt and Associates, earned a doctorate in Educational Human Resource Development from Texas A&M University located in College Station, Texas after serving as a certified master peace officer with the city of College Station, Texas.

Among his many responsibilities, he was in charge of training new recruits.

Doctor Platt was later named Coordinator for the Drug Evaluation and Classification Program (DRE) at Texas A&M’s TEEX Law Enforcement Training Division. Additionally, he was an adjunct instructor at several colleges, where he provided training in law enforcement based on his in-depth first hand knowledge of police practice and procedure.

Doctor Platt’s unique combination of doctorate-level education and street level law enforcement experience led him to co-found Walden Platt and Associates in 2002, which later became Platt and associates Impaired driving Consulting in 2008, which has become the premiere consulting firm specializing in impaired driving and police tactics and procedure cases throughout the US and beyond.  You can rely on consistent top quality results because Dr. Platt insists on personally reviewing each case his firm accepts.

Doctor Platt’s dissertation was entitled An Evaluation of the National Highway Traffic Safety Administration Horizontal Gaze Nystagmus Test at a .08 Blood Alcohol Concentration for the State of Texas.

Founder & Personal Trainer

Call Us to Find Out How We Can Help You


4343 Carter Creek Parkway, Suite 120
Bryan, Texas 77802

+1 (979) 846 3950

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