William Bortles

Principal and Accident Reconstructionist

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William (Will) Bortles has been reconstructing accidents for over 10 years. Mr. Bortles has a degree in Mechanical Engineering from the University of Colorado at Boulder. In addition to Mr. Bortles’ education as an engineer, he has received extensive training specific to the field of accident reconstruction.  Will has undergone training from a number of credible organizations including: Northwestern University – Center for Public Safety, Society of Automotive Engineers, Commercial Vehicle Safety Alliance and the Crash Data Group. Mr. Bortles is fully accredited as an accident reconstructionist by the Accreditation Commission for Traffic Accident Reconstruction (ACTAR).  He is a member of the Society of Automotive Engineers (SAE) where he has published peer-reviewed studies pertaining to accident reconstruction and event data recorders. Will also serves a peer-reviewer for pending SAE publications and is an active member for SAE’s Data Collection and Archiving Standards Committee. Will is a member of the National Association of Professional Accident Reconstruction Specialists (NAPARS) and the Southwestern Association of Technical Accident Investigators (SATAI).

Mr. Bortles has experience in a wide variety of cases and has testified in state and federal courts as an expert in accident reconstruction and event data recorders. Will’s research focus has been the event data recorders found in airbag control modules from passenger vehicles and engine control modules found in commercial vehicles. He has instructed other reconstructionists and law-enforcement personnel on the accepted practices of imaging event data from passenger vehicles. Recently, Mr. Bortles has been involved in training and research vehicle systems forensics as it pertains to vehicle infotainment and telematics systems. In addition to event data recorders, Mr. Bortles has published papers on the topics of vehicle-to-vehicle crashes, crash test analysis, acoustics and the analysis of tire mark evidence. His work conducting forensic testing involving high speed tire disablements, vehicle-to-pedestrian accidents and loss of directional control has been published by others.


Featured Publications:
Society of Automotive Engineers (SAE),
Acoustical Society of America (ASOA)
American Bar Association (ABA)

Seminars & Invited Lectures 

  • “Entertainer, Navigator and Historian: Vehicle Data – Forensic Retrieval and Privacy/Data Ownership Issues,” ABA,  April 7, 2016.
  • “What You Need to Know about Event Data Recorders,” Webinar: Washington Defense Trial Lawyers, June 28, 2013
  • “Heavy Truck Accidents: Preserving Electronic Event Data,” Colorado Motor Carriers – Safety Management Council Meeting, June 6, 2013.
  • “Event Data Recorder 101 – An Introduction and Application of Data,” CLE Webinar Offered by Kineticorp, May 3, 2013.
  • “Emergency Response & Accident Investigation: Documenting Vehicle Evidence and Preserving Event Data.” UPS, 2013
  • “The Evolution of the Event Data Recorder.” Guest Lecturer. Biomechanical Engineering Department, Wayne State University, April 12, 2011.
  • Bosch Crash Data Retrieval (CDR) System® Technician Level 1 & Level 2 Certification Course. Instructor. Kineticorp, March 8, 2011

Other Research

  • “A Comparison of 25 High Speed Tire Disablements Involving Full and Partial Tread Separations,” SAE, 2013.
  • “CDR supported vehicle car-to-pedestrian crash testing,” ARC-CSI Crash Conference, April 20, 2011
  • “Denver Police Department C.V.P.I. Directional Control and Yaw Testing” SAE, 2009
  • “Restitution Modeling for Crush Analysis: Theory and Validation,” SAE, 2006

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