Robert T. Lynch, PE

DJS Associates, Inc.
1603 Old York Road
Abington, PA 19001
Office: 215-659-2010

Robert T. Lynch, PE, earned Bachelor of Arts degrees in both Physics and Mathematics from Franklin & Marshall College before attending the University of Virginia where he obtained a Master of Science degree in Mechanical Engineering. He has taken graduate courses and earned a certificate in Human Factors Engineering and Ergonomics (HFEE). He is a licensed Professional Engineer and an accredited traffic accident reconstructionist by the Accreditation Commission for Traffic Accident Reconstructionists (ACTAR). Mr. Lynch is certified as a Crash Data Retrieval (CDR) Technician and Analyst, certified by the Society of Automotive Engineers (SAE) to access and interpret heavy vehicle event data recorders (HVEDR), and is also certified by the Federal Aviation Administration (FAA) as a licensed Unmanned Aerial Systems (UAS) remote pilot.

Bob has over 10 years of experience as a consultant in the field of collision reconstruction, applying the laws of physics to investigate, analyze and reconstruct vehicular collisions, including those involving pedestrians, bicyclists, passenger vehicles, and commercial vehicles. He has conducted field investigations and analyzed hundreds of motor vehicle collisions, including pedestrian impacts, for their crash characteristics and dynamics. Bob specializes in nighttime photography techniques, creating representative photographs of recreated scenes. He is trained to gather and utilize three-dimensional laser scan data to generate accurate three-dimensional models of both vehicles and sites. Bob has demonstrated reconstruction through the use of simulation and animation techniques. He also has worked on the research and development of vehicle occupant crash protection devices and has tested and validated energy-attenuating seating systems to military ground vehicles. He has specified and conducted full-scale vehicle crash tests and has aided local police agencies in homicide investigations.

Bob is a member of the Society of Automotive Engineers (SAE), the Illumination Engineering Society (IES), the National Society of Professional Engineers (NSPE), the Pennsylvania Society of Professional Engineers (PSPE), the National Association of Subrogation Professionals (NASP), the National Association of Professional Accident Reconstruction Specialists (NAPARS), National Association of Traffic Accident Reconstructionists and Investigators (NATARA), and the Human Factors and Ergonomics Society (HFES). He has lectured to several of these organizations, as well as to both plaintiff and defense attorneys, on topics related to collision reconstruction.

Areas of Expertise
  • 3D Laser Scanning
  • Accident Investigation
  • Accident Reconstruction
  • Black Box/Data Recorder
  • Bus & Truck Safety/Accident
  • Driver Behavior
  • Forensic Engineering
  • Human Factors
  • Mechanical Engineering
  • Motorcycles
  • Professional Engineering
  • Safety
  • Transportation Engineering
  • Transportation Safety

Expert Background
Q: For what area(s) of expertise have you been retained as an expert?
A: Motorcycle Collisions
Pedestrian/Bicycle Projection Analysis
Nighttime Visibility/Recognition
Hazard Identification
Headlight Projection Analysis
Similar Condition Study
Ability to Avoid Analysis
Perception-Reaction Time
Total Stopping Distance
Swerve Avoidance Maneuvers
Looming Analysis (approaching slow-moving/stopped vehicles on a highway)
Time-Distance-Speed Analysis
Heavy Vehicle Rollover
Heavy Vehicle EDR
Passenger Vehicle EDR
Crush Analysis
Momentum Analysis
Low-Speed Impacts
Sideswipe Collisions
Q: What services do you offer? (E.g.: consulting, testing, reports, site inspections etc.)
A: 3D Laser Scanning
Drone/Aerial Documentation
Event Data Extraction & Analysis
3D Engineering Animations/2D Exhibits
Site & Vehicle Inspections
Forensic Evidence Storage
24/7 Rapid Response
Collision Analysis


Available Upon Request