Julius M. Roberts

Julius M. Roberts, M.S., P.E.

Senior Managing Consultant



Mr. Julius Roberts is a Senior Managing Consultant and Director with Engineering Systems Inc. (ESi). His background includes mechanical engineering with expertise in accident reconstruction and biomechanics. Mr. Roberts is a licensed Professional Engineer and completed SAE’s Accident Reconstruction Certificate Program.

Mr. Roberts specializes in accident investigation and reconstruction of recreational, passenger, and commercial vehicles including accessing and interpreting Event Data Recorders (EDR) in light and heavy vehicles, heavy vehicle air brake systems, vehicle dynamics instrumentation, mechanical testing, data acquisition and analysis, and three-dimensional laser scanning.

Mr. Roberts has extensive experience with biomechanical instrumentation, incorporating the use of motion capture technologies to measure and visualize biological motion during complex interactions within the human-machine-environment. Measurements have been performed on both equipment and human participants involving on-road and off-road vehicles, heavy machinery/equipment, rollercoasters, waterslides, and elevators. Mr. Roberts has also captured and analyzed biomechanical data pertaining to human subjects performing activities of daily living and sustaining impacts. His analytical skills assist clients in evaluating competing theories of incident causation and comparative analysis. 

Mr. Roberts provides visualization services to the client as well. He has extensive training and experience in operating traditional and advanced 3-dimensional surveying equipment used for capturing and preserving accident sites and involved equipment. Mr. Roberts is skilled at collecting meaningful evidence and data that is applied towards accident reconstruction analysis. He is proficient in generating and presenting reconstruction analysis into accurate and factual demonstratives using CAD software. His demonstratives support the client in describing the events of an accident.

Mr. Roberts’ graduate studies focused on automotive crashworthiness, occupant protection and safety systems, impact biomechanics, injury mechanisms, injury tolerance, and musculoskeletal biomechanics. Mr. Roberts has experience in mathematical modeling, finite element methods, and computational simulation.


  • The Kinematic Analysis of Occupant Excursions and Accelerations during Staged Low Speed Far-Side Lateral Vehicle-to-Vehicle Impacts, SAE Technical Paper, April 2019
  • Stump Grinder Accident Reconstruction and Design Testing Methodologies, Proceedings of The XXXth Annual International Occupational Ergonomics and Safety Conference, June 2018
  • Analysis of an Unexpected Impact to the Crown of the Head, Proceedings of The XXVIIIth Annual International Occupational Ergonomics and Safety Conference, June 2016
  • Automatic Sliding Door Sensor Safety Analysis, Proceedings of the XXVIIIth Annual International Occupational Ergonomics and Safety Conference, June 2016

Project Experience

ESi's expertise spans dozens of industries and specializations organized across several practice groups, each staffed by dozens of in-house experts with the technical knowledge, hands-on expertise, and courtroom experience required to execute projects for and with our clients from start to finish.

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