Joseph R. Coplan and Bradley J. Stolz, E.I. - Co-Authors
Joseph R. Coplan, ACTAR #814
Joe is ACTAR Certified by the Accreditation Commission for Traffic Accident Reconstruction. He is also Certified by AAA and NHTSA as a Child Seat Inspection Technician. He served as a Police Officer for the City of Phoenix, Arizona for 27 years until retiring in 1998. As a police officer he was engaged in vehicular crime and critical injury and fatal traffic collision investigations. Joe works with all types of accident reconstruction from automobile, motorcycle, bicycle to pedestrian accidents with specialty experience in speed analysis, Delta V, P.D.O.F., impulse calculation, kinematic analysis, yaw critical speed analysis, vehicle rollover analysis, and low-speed impact analysis. Additional technical training courses span many areas of accident reconstruction including collision and crush analysis, braking efficiency, occupant kinematics and injury pattern, roadway design, child restraint systems, motorcycle collisions, and many more. Joe's extensive technical training and expertise have also made him a highly qualified expert witness for legal professionals.
Bradley J.Stolz, E.I.
Brad holds a Bachelor of Science in Engineering with mechanical specialty. He is an ACTAR-Accredited Traffic Accident Reconstructionist. Brad specializes in engineering-based investigations regarding automotive accidents, commercial vehicle crashes, motorcycle collisions, car-pedestrian collisions, brake systems failures, tire failures, and airbag deployment collisions. He provides services to insurance companies, legal professionals, law enforcement agencies, restoration companies, homebuilders, homeowner associations, and commercial property managers. Brad has experience with the automotive Event Data Recorder (EDR, “black box”) function of the airbag control module, the Crash Data Retrieval (CDR) System, Crush and Delta-V speed analysis, P.D.O.F., and Impulse Calculation. His other areas of investigation include HVAC systems, hail damage, frozen pipes, water damage, infrared thermography, construction defect and repair, building envelope analysis, EIFS/Stucco systems, and fire investigation.
Articles by this Author
The Automotive Event Data Recorder (EDR)
- By Joseph R. Coplan and Bradley J. Stolz, E.I. - Co-Authors
- Published 09/1/2006
- Accident Reconstruction
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Rating:
Most people are familiar with “black box” technology in modern aircraft as a means to record information in the few minutes before a crash. However, most individuals are not aware that this very same technology might be present under the passenger’s seat of their personal vehicle. It is referred to as an automotive Event Data Recorder (EDR), and it has tremendous implications for any accident reconstructionist....
Motorcycle Traffic Accident Reconstruction
- By Joseph R. Coplan and Bradley J. Stolz, E.I. - Co-Authors
- Published 03/1/2006
- Accident Reconstruction
- Unrated
Have you ever had a client claim he or she attempted to steer his motorcycle in one direction; however, it went the opposite direction? How many have claimed this occurred and it has caused them to crash? How many times were they told that they were crazy?
Motorcycles have special operational characteristics that automobiles do not have. They are articulated vehicles, which means they are hinged. The majority of them have...