About Mark
Mark Deters is an Ohio-based attorney whose work intersects law, traffic safety and forensic investigation. He combines courtroom experience with hands-on knowledge of law enforcement procedures. He is known among colleagues for a straightforward approach to technical evidence.
Deters built his career around training and technical certification. He is a Law Enforcement Mobile Video Instructor through the Law Enforcement Mobile Video Institute and a Standardized Field Sobriety Testing Instructor certified by the National Highway Traffic Safety Administration. The Ohio Peace Officer Training Academy lists him as a Traffic Radar and Laser Instructor. He also holds certification as an Accident Reconstructionist from the Institute of Police Technology and Management and serves as a BAC DataMaster Senior Operator for the Ohio Department of Health. Those credentials shape how he evaluates cases and prepares testimony.
His professional life has blended classroom instruction and casework. He has taught officers how to document and analyze mobile video evidence, how to administer and interpret sobriety tests, and how radar and laser devices are deployed and maintained. On the technical side, his accident reconstruction training equips him to parse crash scene dynamics and measurement data. The BAC DataMaster qualification gives him direct experience with forensic alcohol testing hardware and procedures. That combination of training and practical knowledge informs the way he reviews reports and cross-examines expert witnesses.
Deters keeps a hands-on approach in litigation. He often works through the underlying technical materials rather than relying solely on others’ summaries. That can mean examining event data, calibration records, scene measurements, or video frame-by-frame. He regularly prepares demonstrative exhibits and expert questions that translate technical points into clear evidence for judges and juries. Peers say his files show attention to procedural detail and to the specific mechanics behind enforcement technologies.
He maintains an office at 2011 South Lakeman. In addition to casework, he continues to train and consult for law enforcement agencies on topics tied to his certificates. His current practice centers on traffic crash analysis, impaired-driving evidence, law enforcement video, and training-related consultation.
