Commercial Vehicle Accidents

The motion of a commercial motor vehicle can be affected by a number of issues.


Reconstruction of an accident involving a commercial motor vehicle, or tractor-trailer, can quickly become a very complex matter. The motion of a commercial motor vehicle can be affected by a number of issues including vehicular geometry, cargo loading, high cross winds, and the condition of the brakes and tires. The pure size and weight of the vehicles will limit braking capabilities and maneuverability in an emergency situation.

The height of commercial motor vehicles often leads to situations of semi truck underride in which the front of a passenger vehicle passes underneath the rear or side of a trailer. As the car continues, impact occurs between the bottom of the trailer and the passenger compartment of the car. Due to the geometry of the collision, accidents involving semi truck underride are often fatal.

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Since 1982, Knott Laboratory has been providing comprehensive forensic engineering and computer animation services to reconstruct accidents.

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Knott Laboratory has become the leader in forensic engineering and computer animation by investigating high profile cases and conveying our analysis effectively during litigation.

Experts in the Field

Our forensic engineers are experts in accident reconstruction, failure analysis and cause & origin. Our forensic engineers work directly with our in-house animation department to create state-of-the-art forensic animations for use in court, arbitration, mediation or settlement negotiations.

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

President & CEO, Principal Mechanical Engineer

(303) 925-1900
rziernicki@knottlab.com

Ben T. Railsback, M.S., P.E.

Director of Mechanical Engineering

(303) 925-1900
brailsback@knottlab.com

Steve D. Knapp, P.E., CFEI, CVFI

Senior Engineer

(303) 925-1900
sknapp@knottlab.com

William H. Pierce, P.E.

Senior Engineer

(303) 925-1900
wpierce@knottlab.com

Ricky L. Nguyen, M.S., P.E.

Mechanical Engineer

(303) 925-1900
rnguyen@knottlab.com

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