32+ Years of Experience. Hundreds of Fatal and Serious Injury Collisions Reconstructed or Investigated. Qualified and Accepted as an Expert in State, Federal, and Military Courts.
Gerald C. McDevitt is a forensic reconstruction and forensic mapping expert with more than 32 years of professional experience, qualified and accepted as an expert witness in state courts across multiple jurisdictions, in United States District Courts, and in United States military courts under the Uniform Code of Military Justice.
He has been qualified and accepted as an expert witness in the disciplines of traffic collision reconstruction, forensic mapping, and emergency vehicle operations. His methodology is developed to meet Daubert and Frye admissibility standards. Mr. McDevitt practices from the Charleston, South Carolina area and accepts casework nationwide and overseas.
Gerald McDevitt has averaged more than 30 fatal and serious injury collision investigations per year, resulting in the reconstruction or investigation of hundreds of such incidents.
Under a United States Marshals Service special deputation, he provided forensic mapping assistance to the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) during the investigation of the Charleston Sofa Super Store Fire, a multi-fatality line-of-duty incident involving nine firefighters.
He applies accepted scientific methods using Recon3D handheld LiDAR scanning, a Sokkia reflectorless total station, Emlid Reach RS3 GNSS, drone-based aerial photogrammetry, Bosch crash data retrieval, and 3D animation, with each step documented so the findings can be examined and reproduced.

Fatal & Serious Injury Collisions Investigated

Fatal & Serious Injury Collision Investigations Per Year

Years of Experience

Years of Courtroom Testimony

To deliver objective forensic reconstruction and mapping, grounded in accepted scientific principles and documented so that every step can be examined and tested.

To be the reconstruction expert that attorneys, insurers, and military counsel on both sides rely on when the stakes are highest — combining 32+ years of field experience with current measurement technology and clear, documented analysis.
Gerald McDevitt holds a Bachelor of Science in International Management from Clemson University and served in the United States Air Force as an Integrated Avionics Systems Specialist.
He began his accident reconstruction career in law enforcement with the Charleston Police Department, completing seventeen years of municipal law enforcement service as Traffic Homicide Team supervisor and forensic mapping specialist, responsible for fatal collision investigation, case preparation, and prosecutorial coordination. He also served as supervisor and trainer of the department’s Motorcycle Unit for more than fifteen years, and as an instructor in forensic mapping, Total Station technology, and emergency vehicle operations. He is a Northwestern University Center for Public Safety certified police motorcycle instructor.

Charleston Police Department Medal of Valor

U.S. Department of Justice – U.S. Marshals Service Special Deputation

IACP / Parade Magazine National Police Officer of the Year (one of six named nationally)

Carnegie Hero Fund Commission Nominee

City of Charleston Police Officer of the Year
If you are evaluating an accident reconstruction expert for litigation, consultation, or case review, contact Gerald McDevitt directly for a confidential discussion.