Matthew Fox

Contact Matthew Fox

303-925-1900 Download Résumé Publications

Accident Reconstruction Expertise Area

Trucking Standard of Care Expert

During his career, Mr. Fox has held numerous positions related to driver training, safety and compliance, operation, and others. Mr. Fox’s 31 years of experience has included, but is not limited to, the following:

• Hired and led a team of 65 training managers.
• Developed and implemented safety training, risk management, and compliance standards for new delivery partners.
• Achieved a 140% increase in driver retention through safety, training, and compliance initiatives.
• Successfully lobbied for legislation or agreements to gain CDL testing reciprocity in 6 states
• Developed and implemented a comprehensive training program for CDL drivers.
• Achieved a 98% first-time pass rate for students on the CDL exam.
• Maintained a perfect safety record with zero accidents or injuries.
• Piloted a new CDL license exam for the complete State of Texas in collaboration with the Texas Department of Public Safety licensing division training new federal standards to students for training and licensing. (2016)
• Safely transported goods to and from manufacturing plants, retail stores, and distribution centers.
• Drove 1.8 million miles without an accident.
• Managed a team of drivers and was responsible for all aspects of fleet operations.
• Oversaw site operations, including strategic planning, staffing, and employee training.
• Developed a startup freight brokerage branch that generated $500,000 in sales revenues in 12 months.

Education


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Media Appearances

Knott Laboratory has been featured on numerous television programs nationally and internationally. Click each title below to learn more about each appearance.

by Sarah Allen

Brian Lonberg headshot

Brian Lonberg

Brian Lonberg headshot

Contact Brian Lonberg

303-925-1900 Download Résumé Publications

Accident Reconstruction Expertise Area

Accident Reconstructionist

Formerly at the Cherokee Sheriff’s Office, Georgia, Mr. Lonberg has performed hundreds of investigations and reconstructions of high and low-speed motor vehicle accidents involving passenger cars, motorcycles, pedestrians, bicycles, and commercial vehicles. During this time, the majority of Mr. Lonberg’s cases consisted of fatal, felony, and/or high-profile cases. His experience includes the initial on-scene investigation and gathering of evidence.

Mr. Lonberg's reconstructions involve the use of multiple accident reconstruction disciplines such as: conservation of energy and conservation of momentum analysis to determine the speed of vehicles involved in accidents, occupant injury analysis, driver reaction, and time/distance relationships and analysis.

His investigates analysis of vehicle dynamics, vehicle safety, human factors and visibility investigations. Frequent aspects of these investigations also involve a mechanical evaluation of the vehicle which looks for mechanical failure and performance of the brakes, tires, seat belts, airbags, and overall fitness and safety of the vehicle.

Mr. Lonberg is ACTAR certified (Registration No. 4640) and a member of the National Association of Professional Accident Reconstruction Specialists (NAPARS).

Education

Criminal Justice
Eastern Gateway Community College, Steubenville, OH,

Media Appearances

Knott Laboratory has been featured on numerous television programs nationally and internationally. Click each title below to learn more about each appearance.

by Sarah Allen

David Torsiello, E.I.T.

Contact

(303) 925-1900 Download Résumé Publications

Accident Reconstruction Expertise Area

Accident Reconstructionist

David Torsiello is an accident reconstructionist working on cases in Colorado and across the country.

Education

B.S. Mechanical Engineering
University of Colorado, Boulder, CO, 2021

Engineering and Design

David is a licensed EI who specializes in accident reconstruction. He conducts inspections of accident sites, vehicles and exemplar vehicles using 3D scanners, cameras and drones. David analyzes results of these inspections to produce technical reports, exhibits and visualizations for depositions and jury trials.

Media Appearances

Knott Laboratory has been featured on numerous television programs nationally and internationally. Click each title below to learn more about each appearance.

by Sarah Allen

Brandon Stone

Contact Brandon Stone

303-925-1900 Download Résumé Publications

Accident Reconstruction Expertise Area

Accident Reconstructionist

Retired from the Georgia Department of Public Safety, Georgia State Patrol, Mr. Stone has performed hundreds of investigations and reconstructions of high and low-speed motor vehicle accidents involving passenger cars, motorcycles, pedestrians, bicycles, and commercial vehicles.

During this time, most of Mr. Stone’s cases consisted of fatal felony, and/or high-profile cases. His experience includes the initial on-scene investigation and gathering of evidence. His reconstructions would require the use of multitude of accident reconstruction disciplines such as: the conservation of energy and conservation of momentum analysis to determine the speed of vehicles involved in accidents, occupant kinematics analysis, driver reaction, time and distance relations and analysis. Mr. Stone investigations often involve analysis of vehicle dynamics, vehicle safety, human factors and visibility investigations. Frequent aspects of these investigations also involve a mechanical evaluation of the vehicle which looks for mechanical failure and performance of the brakes, tires, seatbelts, airbags, and overall fitness and safety of the vehicle.

Mr. Stone is ACTAR certified (Registration No. 3648) and a member of the National Association of Professional Accident Reconstruction Specialists (NAPARS).

Education


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Media Appearances

Knott Laboratory has been featured on numerous television programs nationally and internationally. Click each title below to learn more about each appearance.

by Sarah Allen

Seth J. Behrens, P.E., DFE

Contact Mr. Behrens

(303) 925-1900 Download Résumé Publications

Accident Reconstruction Expertise Area

Director of Engineering

Mr. Behrens has performed investigations and reconstructions of high and low-speed motor vehicle accidents involving passenger cars, motorcycles, pedestrians, bicycles, offroad vehicles, trailers, and commercial vehicles. His experience includes the use of conservation of energy and conservation of momentum analysis to determine the speed of vehicles involved in accidents, crashworthiness of vehicles, occupant compartment intrusion, driver reaction, and time/space relationships and analysis. Mr. Behrens’ investigations often involve analysis of vehicle dynamics, vehicle safety, human factors and visibility studies. Frequent aspects of these investigations also involve the evaluation of the performance of steering, suspension, brakes, tires, seat belts, and airbags. Mr. Behrens has also employed reconstruction techniques to analyze injury incidents and industrial accidents.

Education

B.S. in Mechanical Engineering
Arizona State University, Tempe, AZ, 2010

Registration

Registered Professional Engineer in the following states:
Arizona, Utah, Nevada, New Mexico, California, Colorado, Texas, Georgia.

Accredited Traffic Accident Reconstructionist (ACTAR)
Registration No. 3596

Board Certified Diplomate (DFE)
National Academy of Forensic Engineers

Forensic Engineering Investigations

Mr. Behrens has performed investigations and reconstructions of high and low-speed motor vehicle accidents involving passenger cars, motorcycles, pedestrians, bicycles, offroad vehicles, trailers, and commercial vehicles. His experience includes the use of conservation of energy and conservation of momentum analysis to determine the speed of vehicles involved in accidents, crashworthiness of vehicles, occupant compartment intrusion, driver reaction, and time/space relationships and analysis. Mr. Behrens’ investigations often involve analysis of vehicle dynamics, vehicle safety, human factors and visibility studies. Frequent aspects of these investigations also involve the evaluation of the performance of steering, suspension, brakes, tires, seat belts, and airbags. Mr. Behrens has also employed reconstruction techniques to analyze injury incidents and industrial accidents.

Mr. Behrens frequently utilizes the latest technologies available in accident reconstruction throughout all analysis stages, from gathering evidence through accident reconstruction and accident simulation. As a technician certified in Bosch crash data retrieval, Mr. Behrens has retrieved and/or analyzed crash data from electronic data recorders in hundreds of passenger vehicles. Mr. Behrens also has experience in the retrieval and analysis of vehicle infotainment and telemetry data utilizing the Berla iVe toolkit. In addition, Mr. Behrens has experience in the retrieval and analysis of heavy vehicle event data recorders. Mr. Behrens frequently surveys accident sites and vehicles using high definition 3-D laser scanning, total stations, and/or photogrammetry. Additionally, Mr. Behrens is a FAA licensed remote pilot and performs aerial surveys of sites using unmanned aerial systems (drones). After gathering survey data, Mr. Behrens uses computer-aided drafting software packages to view the evidence and gather detailed measurements in virtual space. During the reconstruction process, Mr. Behrens frequently develops and utilizes advanced computer scripts to solve complex and/or iterative calculations. After reconstructing an accident, Mr. Behrens often simulates the accident using advanced crash simulation software.

Expert Testimony

As a result of Mr. Behrens’ investigations and analysis, he has provided expert witness testimony.

Engineering and Design

Mr. Behrens has working experience in the manufacture, design, testing and analysis of vehicles and mechanical components in the transportation industry. Mr. Behrens has been involved in full-scale vehicle and trailer performance testing for product development and litigation. In addition, Mr. Behrens has performed product liability investigations and failure analysis for mechanical components and systems related to the automotive industry. Mr. Behrens is familiar with the Federal Motor Vehicle Safety Standards (FMVSS), Federal Motor Carrier Safety Regulations (FMCSR), Society of Automotive Engineers (SAE) Standards, and Industry Practices within the transportation industry. Mr. Behrens has presented about accident reconstruction and vehicle technologies for various trade organizations and has co-authored a peer-reviewed publication for the Accident Reconstruction Journal (“ARJ”).

Media Appearances

Knott Laboratory has been featured on numerous television programs nationally and internationally. Click each title below to learn more about each appearance.

by Sarah Allen

Richard M. Ziernicki, Ph.D., P.E., DFE

Contact Dr. Ziernicki

(303) 925-1900 Download Résumé Publications

Accident Reconstruction Expertise Area

Principal Engineer

Dr. Ziernicki has evaluated several thousand industrial and vehicular accidents. He has presented papers and lectured at a number of technical conferences in the United States, Europe and South America. He is the author of seventy eight publications, primarily in the fields of mechanical engineering, and vehicle accident reconstruction. His accident reconstruction expertise has been featured over thirty times on local and national television including the Discovery Channel, Dateline NBC, Dr. Oz Show, MSNBC, FOX News Channel and National Geographic Channel on accidents such as the Princess Diana accident, on the Air France Flight 447 accident and more.

Education

Ph.D. Technical Science, magna cum laude, specialty in dynamic analysis
University of Mining and Metallurgy, Krakow, Poland, 1979

M.S. Mechanical Engineering, specialty in design of heavy industry and foundry machinery
University of Mining and Metallurgy, Krakow, Poland, 1975

B.Sc. Mechanical Design
University of Mining and Metallurgy, Krakow, Poland, 1973

Registration

Registered Professional Engineer in the following states:
California, Colorado, Florida, Texas.

Certified by National Council of Examiners for Engineering and Surveying, Certification # 30881

Board Certified Diplomate in Forensic Engineering by the National Academy of Forensic Engineers

Engineering and Design

Dr. Ziernicki taught mechanics, stress analysis, strength of materials, and vibrations at the Institute of Vibrations and Acoustics. While Manager of the Research and Development Group in Krakow, he developed techniques for dynamic modeling, analysis of vibrations, and optimization of mechanical systems. He was actively involved in the modeling of engine-gearbox systems and vehicle suspensions, and in pneumatic tire testing.

As Manager of Mechanical Engineering with Over-Lowe, Dr. Ziernicki was in charge of mechanical design, dynamic analysis, and testing of product lines including engine generator sets, transport carriers, trailers, portable lighting equipment, pneumatic towers, and light construction equipment. He prepared technical proposals for the Department of Defense in the areas of torsional and transverse vibrations, rotor balancing, noise control, machine design, dynamic modeling, tolerance analysis, and testing.

Currently with Knott Laboratory, Dr. Ziernicki is consulting in the areas of patent and trade secret issues related to mechanical engineering.

Accident Reconstruction

Dr. Ziernicki has evaluated several thousand industrial and vehicular accidents. He conducts and directs investigations of vehicular accidents, which include automobiles, tractor-trailers, buses, motorcycles, bicycles, and pedestrians. He is very familiar with Federal Motor Carrier Safety Regulations (FMCSR). He also consults on industrial accidents and machinery failures and machine safety (including cranes, forklifts, skid steers, wood chippers, balers, other industrial and construction equipment).

In safety analysis he applies industry safety standards and regulations including Occupational Safety and Health Administration (OSHA), American National Standards Institute (ANSI), International Organization for Standardization (ISO,) and Society of Automotive Engineers (SAE) and more.

Dr. Ziernicki performed research and field investigations for the National Highway Traffic Safety Administration (NHTSA) as an investigator and team member for NHTSA’s Crash Injury Research and Engineering Network (CIREN), which is comprised of engineers and trauma doctors. He investigated the Princess Diana accident in Paris, France and collapse of “Big Blue” crane in Miller Park, Milwaukee. He also investigated high profile motor vehicle accident in Germany on behalf of United States Department of Defense. Dr. Ziernicki was a lead investigator and testifying expert on an explosion that destroyed a boiler of 450 MW coal-and-gas fired power plant a $600 million lawsuit. He investigated the Princess Diana accident in Paris, France and collapse of the “Big Blue” crane in Miller Park, Milwaukee, and recently the NASCAR case Kevin Ward, Jr. vs. Tony Stewart.

Achievements

A functional knowledge of manufacturing processes and design interface has allowed him to obtain design patents in the USA and Canada. Dr. Ziernicki has presented papers and lectured at a number of technical conferences in the United States, Canada, Europe, and South America.

He has been invited to speak at seminars and conferences including Johns Hopkins University, the SAE International in Sao Paulo, Brazil, ICRASH 2000 in London, and the Five State Judicial Conference where he also served as a faculty member for the Harvard Law School. He has also lectured at the university level including the Technical Institute in Vienna, the University of Mining and Metallurgy in Krakow, Poland, Purdue University in Lafayette, Indiana, the University of Denver, and the University of Colorado at Denver.

He is the author of seventy eight publications, primarily in the fields of mechanical engineering, and vehicle accident reconstruction. Dr. Ziernicki is a contributing author of five books on forensic engineering.

Dr. Ziernicki’s accident reconstruction expertise has been featured over thirty times on local and national television, including Discovery Channel, Dateline NBC, Dr. Oz Show, MSNBC, FOX News, and National Geographic. He was awarded a grant for research in biomechanics by the National Science Foundation.

Dr. Ziernicki was a member of several past SAE Standards Committees. Dr. Ziernicki is Past President and past board member for the National Academy of Forensic Engineers and also serves on Committees for the organization. Dr. Ziernicki received an award in 2012 in Appreciation of Distinguished Leadership as National Academy of Forensic Engineers President.

In 2015, Dr. Ziernicki received the prestigious award for Manager of the Year from the National Society of Professional Engineers-Colorado (NSPE-CO). In 2016, Dr. Ziernicki received an award for his commitment with APITLA to promote the mission of “Putting the Brakes on Unsafe Trucking Companies.”

Dr. Ziernicki was awarded the 2016 Private Sector Project of the Year for its “Advanced Forensic Engineering Analysis of a Shooting Incident” project, by the National Society of Professional Engineers-Colorado (NSPE-CO).

Expert Testimony

As a result of his investigations, Dr. Ziernicki has testified in court as an expert witness in a few hundred cases and was deposed over 500 times. He works as an expert witness for clients such as US Department of Justice, US Department of Defense, State of Colorado Attorney General’s Office, District Attorneys, and Public Defenders.

Professional Affiliations

Dr. Ziernicki is a member of the following professional organizations:

ACTAR

Accreditation Commission for Traffic Accident Reconstruction

ASME

American Society of Mechanical Engineers

NAFE

National Academy of Forensic Engineers

NSPE

National Society of Professional Engineers

PEC

Professional Engineers of Colorado

SEM

Society for Experimental Mechanics

SAE

Society of Automotive Engineers

Media Appearances

Dr. Ziernicki has been featured on numerous television programs nationally and internationally. Click each title below to learn more about each appearance.

by Knott Laboratory