Cdr Expert Witnesses
Cdr expert witnesses and consultants listed here may be able to form expert opinions, draft expert witness reports, provide expert witness testimony at deposition and/or trial as or serve as consulting (non-testifying) experts on cdr. The cdr expert witness listings on this page are typically from fields/areas of expertise such as: Accident Reconstruction and Mechanical Engineering.
David M Hallman, MS, PE
Hallman Engineering LLC
Maple Grove, Minnesota
Mechanical Engineering, Accident Reconstruction
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Automotive, Vehicle Fires, Crash Data, Failure Analysis, Origin and Cause, Vehicle Mechanical, Farm Equipment, CDR, EDR, Heavy Truck Data, Motorcycle Crash, Infotainment
I am a Licensed Professional Engineer in nine states with over twenty-nine years combined experience in materials research, mechanical engineering and design, crash testing research and crash investigation and reconstruction, vehicle fire research and investigation, automotive mechanics and forensic mechanical and materials investigation. I hold degrees in mechanical engineering (BS) and materials science and engineering (MS).
I work on a wide variety of forensic mechanical and forensic metallurgical investigations. These investigations have included but are not limited to an elevator failure involving materials and design issues, a personal injury involving a paper shredder, multiple cases involving farm equipment and personal injuries, machine guarding cases, chair collapse cases, bolted joint failures, patient lifter failures, vehicle hand control issues, and tipped telehandler and boom crane cases.
My automotive background coupled with my two degrees, extensive testing and res...
Daniel S Holmes
Eagle Lake, Minnesota
Accident Reconstruction
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Accident investigation, accident reconstruction, air bag, CDR, EDR, time distance, speed, vehicle inspection, bicycle, commercial vehicle, motorcycle crash, pedestrian, scene photography, aerial photography, drone, occupant kinematics, human factors, sight lines, vehicle equipment, tire failure
My name is Daniel Holmes and I am retired from the Minnesota State Patrol with nearly 27 years of experience. While working for the Minnesota State Patrol I reconstructed over 170 serious or fatal crashes. I have also investigated over 1,500 motor vehicle crashes that did not rise to the level of requiring a crash reconstruction. In 2015, I was awarded the Minnesota State Patrol Award of Excellence in Crash Reconstruction for my work.
I am A.C.T.A.R. ( National Accreditation Commission for Traffic Accident Reconstruction) certified. I am trained as a C.D.R. ( Crash Data Recorder) analyst-technician and have the ability to image and analyze the airbag data from supported vehicles. I am a Forensic Mappist and have the ability to generate scaled diagrams from a scene or use mapping data obtained from Law Enforcement. I am also trained in Occupant Kinematics, and have reconstructed several pedestrian/bicycle accidents along with commercial vehicle crashes. I have a drone license...
