expert specialist

Bryan C. Randles, M.S. (Accident Reconstruction/Biomechanics Expert Witness)

(Accident Reconstruction/Biomechanics Expert Background Info Summary)

Bryan C. Randles, M.S. is an Accident Reconstruction/Biomechanics Expert Witness. He states approximately 50% to 60% of the cases he works on encompass both accident reconstruction and biomechanics; he has been involved in 300-400 cases where he performed both the accident reconstruction and biomechanics.

Mr. Randles received his Masters in Kinesiology with an emphasis in Biomechanics from California State University Northridge, in 2003 and his Bachelors in Biomedical Engineering from University of Southern California in 1997.


(Accident Reconstruction/Biomechanics Expert Bullet Points of Interest)

  • Biomechanical Engineer and Accident Reconstructionist/Partner – Biomechanical Research and Testing, LLC, Long Beach, CA (June 2005 to Present)
  • Research Engineer – Accident Research and Biomechanics , Inc., Valencia , CA (Jan 1999 to June 2005)
  • User Technical Training – Diversified Technical Systems , Seal Beach , CA (March 2014)
  • Crash Data Retrieval (CDR) Technician level 1 – Collision Safety Institute, Long Beach, CA (April 2013)
  • Crash Data Retrieval (CDR) Technician level 2 – Collision Safety Institute, Long Beach, CA (April 2013)
  • PC-Crash Workshop- MacInnis Engineering Associates, Laguna hills, CA (April 2010)
  • Principles of Dynamic Data Collection – Diversified Technical Systems, Inc., Long Beach, CA (Feb 2006)
  • Full Accreditation as Traffic Accident Reconstructionist – Accreditation Commission for Traffic Accident Reconstruction (ACTAR – Jan 2007)
  • Dean’s scholarship award, University of South California (1992)
  • Outstanding Paper Award from the Transportation Research Board Committee on Pedestrians A3B04 at the 79th Transportation Research Board Annual Meeting (2000)


(Accident Reconstruction/Biomechanics Expert Final Words/Short Summary)

Mr. Randles conducts research on the biomechanics, human response and injury potential of vehicular impacts. He has worked on over 1,000 motor vehicle accident cases. He performs fully instrumented tests utilizing human subjects and/or human surrogates. He has evaluated vehicular impact behavior, including various techniques for measuring vehicle crash and the assessment of vehicle damage, as well as vehicle crash and post impact dynamics.

Furthermore, Mr. Randles has conducted crash tests for various televised programs regarding automotive impacts and occupant response to impact, and conducted research regarding the use of photogrammetry in accident reconstruction. He also performs biomechanical and accident reconstruction analyses off automotive accidents and various events for purposes of litigation, including impact reconstruction, occupant kinematics, occupant force exposure and injury potential.

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Published: November 2, 2022
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