Accident Reconstruction Expert Witnesses in California
The SEAK Expert Witness Directory contains a comprehensive list of accident reconstruction expert witnesses who testify, consult and provide litigation support on accident reconstruction and related issues. Accident reconstruction expert witnesses and consultants on this page may form expert opinions, draft expert witness reports, and provide expert witness testimony at deposition and trial. The issues and subjects these accident reconstruction expert witnesses testify regarding may include: Accident Reconstruction, Human Factors, Failure Analysis, Pedestrian, Premises Liability, Safety, 3 D Laser Scanning, Bicycles, Black Box, Car, Collision Analysis, Crash Data Retrieval, Forensic Animation, Forensic Engineering, and Mechanical Engineering.
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John Tyson, BS, MS, JD, P.E.
AR TECH FORENSIC EXPERTS INC.
Encino, California
Accident Reconstruction, Slip Trip & Fall
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Vehicle Accident Reconstruction, Car, Bus, Bicycle, Pedestrian, Computer modeling, 3D, Accident Animation 3D Simulation, laser scan, Matterport, Faro, SAFETY, Stairways, ramps, ADA, Building Code Analysis, Coefficient of Friction Testing Products, Lighting, Guards, Industrial
Mr. Tyson has over thirty four years full time experience in Accident Reconstruction, Safety and Forensic Engineering. He has investigated, analyzed and reconstructed more than fifteen thousand accidents during this period.
Consultant to many Governmental and Municipal agencies including United States Attorney, Federal Government, Department of Justice, State Attorney General California, Cities of Los Angeles, Burbank, Pasadena, Glendale, Ontario, Santa Monica ,San Gabriel, Ventura , Fountain Valley, Santa Barbara, Calexico, County of Los Angeles, Orange County, Ventura County. Goleta CALTRANS, State of California.
He has supervised and trained many Engineers and Physicists in the field of Forensic Engineering. He has testified on several hundred occasions on a variety of aspects of accident reconstruction for both plaintiff and defense in depositions, arbitrations, civil and criminal, trials in Municipal and Superior Courts
He has been a court appointed expert in nu...
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Kenneth A. Solomon, Ph.D., P.E., Post Ph.D.
Institute of Risk & Safety Analyses
Woodland Hills, California
Biomechanics, Accident Reconstruction
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Human Factors, Animations, 3D Scans, Photometrics
Specialized forensic staff, broad range of consulting and expert testimony, 47 years of courtroom experience for Dr. Solomon, combined courtroom experience for company 334 person years. Accident reconstruction, biomechanics, human factors, safety, accident prevention, adequacy of warnings, computer animation and simulations, 3D scanning & photometric analyses, drone photography, construction defect, criminal defense, criminal prosecution, premises, product integrity, product liability, product testing, warnings, and lost income calculations. Auto, bicycle, bus, chair, elevator, escalator, forklift, gate, ladder, machinery, motorcycle, press, recreational equipment, roller coaster, slip/trip and fall, stairs, swimming pool, and truck. Litigation and claims, defense/plaintiff, educational seminars, and mediation and arbitration services.
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Jonathan Cherney
Engaged by Media & Press for Expert Interviews.
Jonathan Cherney Consulting and Investigations LLC
Rancho Santa Margarita, California
Accident Reconstruction, Police Practices & Procedures
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Cars, SUV, light trucks, pedestrians, motorcycles, bicycles, scooters, Bosch CDR EDR Tool, black box, Tesla, Hyundai, Kia, traffic control, Code 3 driving, emergency vehicle operations, police pursuit driving, police practices & procedures, DUI FSTs, DUI arrests, TV and media consulting
Provides forensic analysis and litigation support to attorneys, insurance companies and municipalities in the field of accident reconstruction. Has qualified as a court recognized expert in traffic accident reconstruction for jury trials in Orange, Los Angeles and Riverside Counties. Has performed work in many other jurisdiction including Rimini, Italy. Has been practicing accident reconstruction since 1999 and collision investigation since 1989. Has worked privately for criminal prosecution & defense as well as civil plaintiff & defense. Also teaches intro to criminal law, traffic enforcement, DUI investigations, field sobriety tests & arrests at a Southern California based police academy.
Retired after 30 years of service from the Irvine (CA) Police Department in November of 2019 where he was assigned to the Field Operations Division as a Detective responsible for traffic-related cases. Worked as the “Team Leader” for the Irvine Police Department’s M.A.I.T. (Major Accident...
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Daniel R Robles, PE, MBA
Mechanical Engineer - Expert Witness
Community Engineering Services, PLLC
California
Mechanical Engineering, Investigation
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Plumbing, Test Engineering, Product Liability, Failure Analysis, Forensic Engineering, Artificial Intelligence, Accident Reconstruction, Water Damage, Feasibility Study, Corrosion, Construction, Airport, Aviation, Standard of Care, Litigation Support, Risk Assessment, Machinery, Insurance, Document Analysis, Design Engineering
Daniel Robles, PE, MBA is a licensed mechanical engineer with over 35 years of diverse experience in aerospace, building sciences, and advanced technology platforms. He has held leadership roles in design and test engineering for high-profile projects including the NASA Space Shuttle, commercial satellite deployment, stealth aircraft, and commercial aircraft commissioning and servicing, working for industry leaders such as Rockwell International, Hughes Aircraft, Northrop Aircraft, and The Boeing Company.
Mr. Robles is the founder of Community Engineering Services PLLC, where he leverages his extensive aerospace and engineering expertise to provide expert witness services, condition assessments, inspections, and failure analysis for the legal, insurance, and financial industries, as well as private, municipal, and institutional clients. His specific areas of practice include plumbing systems, drain, waste, vent, and domestic water supply, as well as water system failures, water int...
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Matthew D King, PhD
Accident Reconstruction, Fire, Slip/Trip and Fall
Institute of Forensic Science
Selma, California
Accident Reconstruction, Slip Trip & Fall
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Fire, slip, premises, witness, crash, Forensic, trip, liability, Fresno, car, Investigator, fall, safety, California, truck, Engineer, Product, expert, nationwide, pedestrian
I was born and raised in California and grew up as the fifth generation living and farming on our family homestead. I have been blessed with the opportunity to experience the benefits and joys of living in central California with an extensive multi-generational network of family, friends and business contacts. I earned my Bachelor of Science degree in Mechanical Engineering from CSU Fresno in 1994. I continued on for a Master’s in Mechanical Engineering from SDSU and completed my PhD in Applied Mechanics and Engineering Sciences at UC San Diego in 1999.
Since then, I have gained 13 years of full-time experience in the field of Forensic Engineering. I built my own consulting engineering firm and provided Expert Witness services globally as a Senior Investigator and Researcher while teaching part time at the university level. In an effort to grow personally and professionally, I sought out opportunities internationally. Subsequently, I have gained an additional 12 years of full-time...
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Dan A Beabout
From Crack to Cause: Expert Failure Analysis
Self
SPRING VALLEY, California
Metallurgy, Failure Analysis
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Plastic Failures, Manufacturing Engineering , Extrusion Analysis , Passivation Treatments , Steels , Glass Fractography, Jack Failures , Aluminum Castings, Stainless Steels , Patent Infringement , Accident Reconstruction , Heat Treating , Nickle Based Alloys, Building Failures , Engineered Aluminum , Anodizing , Titanium
Should the need arise for forensic engineering expertise in the San Diego region—or in any location accessible by air—highly specialized services are available to assist with even the most complex investigations. With a deep technical foundation in Materials Science Engineering from Purdue University, and extensive casework involving critical failures in metals, polymers, and glass, these capabilities are well-suited to support high-stakes litigation and technical analysis. Whether the matter involves industrial components, consumer products, or structural materials, failure mechanisms are dissected with scientific precision and courtroom clarity.
These services are offered with a focus on responsiveness, technical rigor, and clear communication tailored to both legal teams and juries. Prior engagements have involved litigation support, expert witness testimony, and root cause analysis across a wide range of industries and failure types. The goal is simple: deliver insight that mov...
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Jason C Fries
3D Forensic, Inc.
Concord, California
Accident Reconstruction, Human Factors
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Nighttime Visibility, Line-of-Sight Analysis, Driver's Perspective Animation, 3D Video Reconstruction, Use-of-Force Reconstruction, Officer-Involved Shooting Reconstruction, Use-of-Force Human Factors, Ballistic Trajectory Analysis, Photogrammetry, Laser Scanning, Forensic Animation
Jason C. Fries is the CEO and lead forensic expert of 3D Forensic, Inc. He has worked on forensic analyses and productions since 1997 and has since become one of the most reputable forensic voices in the industry. Fries’s innovations in multiple forensic specialties have enabled 3D Forensic to offer some of the most comprehensive services in the nation.
Fries developed his forensic prowess through research in use-of-force incidents at the Force Science Institute, completing the Advanced Specialist certification. He also graduated from San Diego State University with a BS in Biology and focuses in Physics and Chemistry.
Throughout his years as CEO of 3D Forensic, Jason has successfully infused forensic testimony, visualization, and analysis to the company’s casework, earning the trust and recognition of California and the nation’s most influential attorneys. He has written numerous pieces for forensic and legal publications including Forensic Magazine, Claims Magazine, Internationa...
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Bert Botta, ATP, CFI, MA
Aviation Expert Witness: Airline/Corporate/GenAv
Bert Botta, Aviation Expert
Petaluma, California
Aviation & Aerospace, Accident Reconstruction
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Aircraft Accidents, Airline, Corporate, General Aviation, Flight Crew, Business Jet Accidents, Flight Training, Aviation Safety, InFlight Emergency, Pilot Error, Maintenance Negligence, Crash Investigation, Aircraft Safety, Corporate Jet Accidents, CFIT (Controlled Flight Into Terrain), Loss of Control, Flight Attendant Accidents
Captain Botta brings over 35 years experience as an International Airline and Corporate Jet Captain grounded in a deep General Aviation Background. He also offers a unique dual perspective with 10 years in private practice as a former Licensed Professional Counselor, providing rare insight into the human factors behind aviation accidents and incidents.
AVIATION EXPERT CASE RECENCY (current as of 3/26)
• Regional Carrier CRJ900, hard braking event, resulting in passenger and Flight Attendant injuries
• Regional Carrier, passenger dry ice injury
• Wrong-surface event – ongoing investigation and expert opinion
• Whistleblower case – major jet charter operator
• Wrong-surface event
• Wrongful death case
• Pilot competency, pilot incapacity, and aeromedical issues (multiple cases opined)
• Deposed twice within the past 5 years
• SEAK Expert Witness Training completed
• Listed in SEAK Expert Witness Directory
Representative Commentary & Industry Insights
June 2025: “Wrong surface ev...
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MARTIN M BALABAN, PhD, PE
AR TECH
Encino, California
Accident Reconstruction, Safety
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Vehicle collisions, Premises liability, Safety, Code Compliance, Construction & Industrial Accidents, Failure Analysis, Human Factors, Biomechanics, Mechanical Engineering, OSHA, ADA compliance, Products Liability, Criminal, Licensed Safety Engineer in CA, Slip & Fall, Slip and Fall, Trip & Fall, Ladders, Trip and Fall
Vehicular:
all vehicle types, multi-vehicle, bicycles, pedestrians, skidmark analysis. damage-matching, occupant biomechanics. visibility & line-of-sight analysis, traffic signal phasing, vehicular component defects, seatbelts.
Premises Liability: Code Compliance, Slip, trip, floor friction testing, stairway & ramp accidents, glass injuries, guardrails; illumination issues; manual & electronic gates, ladders, door closing mechanisms, falling objects, structural failures. Occupancies include single- and multi-family residences, retail stores, office buildings, garages, sidewalks, parks and other public access.
Industrial & Construction accidents: Walking-working surfaces including ramps, hoisting & conveying, powered lifts, work platforms, forklifts, construction vehicles, materials handling & storage, machine guarding, ladders, scaffolding, trenching & shoring,
Cal-OSHA compliance, lockout/tagout, IIPP analysis, human factors & ergonomics issues.
Products Liability: Liabili...
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Susan M Bowley, Ph.D.
Biomechanics, Medical Devices & Consumer Products
Bowley Inc.
California
Biomechanics, Medical Devices
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Injury Causation Biomechanics & Personal Injury, Consumer & Medical Product Liability, Premises Liability, Slip, Trip & Falls, Accident Reconstruction, Animations and Illustrations, 3D Laser Scanning, Drone Aerial Mapping, Criminal and Shooting Reconstruction
Dr. Bowley started her own engineering consulting firm in 2008 and has been a testifying expert since 2006. Corporate offices are located in Connecticut (HQ), Maryland, and Northern California. Additionally, Dr. Bowley teaches Engineering courses at local Universities.
Susan M. Bowley, Ph.D. has been a practicing engineer since 1988. Dr. Bowley grew up in Ashford, CT and completed her B.S. in Mechanical Engineering at the University of Connecticut. She then started her professional engineering career at NASA Ames Research Center in Northern California where she worked in various capacities for over 13 years. While at NASA, Dr. Bowley earned her M.S. in Mechanical Engineering at Stanford University with a concentration in Thermosciences, including completion of an independent research study on Transpired Epidermal Water Loss in Premature Infants. After competitive selection for a NASA Full-time Graduate Study Fellowship, Dr. Bowley earned her Ph.D. in Biomedical Engineering at ...
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Richard K. Pumerantz, PhD
Ammo, Firearm, & Shooting Reconstruction Expert
Guns and Ammo Witness Consulting
Lake Arrowhead, California
Firearms & Ballistics, Accident Reconstruction
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firearm, ammunition, ammo, ballistic, gun, cartridge, bullet, projectile, manufacture, load, weapon, antique, reconstruction, training, design, engineering, forensic, shooting, crime, scene
• Court recognized as an expert in Firearms, Ammunition, and Crime/Shooting Scene Reconstruction.
• Licenses: Type 10 FFL (Manufacturer of Destructive Devices), Special Occupations Tax Stamp, and all Dangerous Weapons Permits available from the State of California, DOJ.
• Ongoing resource/consultant to numerous reloading equipment, projectile, and firearm manufacturers, including the areas of safety, training, and design flaws.
• Designed and manufactured firearms and fire control systems.
• Certified and testified in crime scene reconstruction and shooting accidents.
• Recognized in the firearms industry as an expert in antique and replica cartridge development and manufacturing, including the production of proof loads. “Official” ammunition benchmark for half a dozen firearm manufactures.
• Provide educational opportunities on the ammunition manufacturing process and corresponding toolmarks for law enforcement agencies, specifically for their crime lab and firearm unit techn...
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David Yarr
Forensic Animation & Accident Reconstruction
Top View Animation LLC
Tustin, California
Accident Reconstruction, Video
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Forensic Animation, Legal Graphics, Trial animation, Courtroom visuals, Accident reconstruction animation, Personal injury animation, Vehicle collision animation, Medical illustration, Demonstrative evidence, 3D animation for litigation, Motorcycle crash animation, Slip and fall animation, Trucking accident reconstruction
David Yarr is the Founder and Principal of Top View Animation, a forensic animation and legal graphics studio specializing in high-end 3D accident reconstruction, perception-reaction analyses, and courtroom-ready visuals. With years of experience supporting personal injury, wrongful death, and civil litigation cases, David has worked closely with many of the nation’s top law firms, including Panish Shea & Ravipudi, Olson Law Group, The Homampour Law Firm, The Vartazarian Law Firm, Davana Law Firm, Ven Johnson Law, PLC, Fletcher Farley, and others.
David is highly skilled in 3D modeling, animation, motion analysis, and visual evidence presentation, using industry-leading tools such as Autodesk 3ds Max, Character creator, FARO scanners, PhotoModeler, Recap Pro, Rhino and Adobe products. His animations integrate laser scan data, EDR/EDR outputs, surveillance video, dashcam evidence, and expert reports to deliver accurate, scientifically grounded visual reconstructions that are both co...
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Gary L. Buffington, MS, AA, BS, CSP, CRSP
American Safety Consulting
Santa Clarita, California
OSHA, Construction
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Accident Reconstruction, Personal Injury/Wrongful Death, Crane/Hoist & Rigging, Safety Training Plans, JHA/JSA, Confined Space, Fall Protection, Machinery Guarding, Ladders/Scaffolds, Forklifts/Scissor Lifts, Safety Codes/Regulatory Compliance, Audits, Mining, MSHA, HAZCOM, EM 385-1-1, ANSI
Mr. Buffington offers a unique combination of formal education, special training and project based technical experience in completing mega-projects valued at 20 billion dollars with over 12 million worker hours and safety statistics below half of the respective national averages and no fatalities. He is a CSP (US) & CRSP (Canada) by exam, licensed Private Investigator, former Federal Supervisory Special Investigator and MSHA federal Mine Inspector, Deputy Sheriff, Deputy Sheriff Criminal Investigator, approved OSHA 29 CFR Trainer Parts 1910 & 1926, approved MSHA 30 CFR trainer for surface & Underground coal and metal/non-metal mines. ASSE 2001 Safety Profession of the Year for Construction Practice Specialty & ASSE 2003 -2004 Safety Professional of the Year for Mining Practice Specialty.
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Daniel McLain
DHM Crash Consulting & Accident Reconstruction Services, LLC.
Norco, California
Accident Reconstruction, Law Enf & Criminal Justice
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Seat Belts, Airbags, Restraint Systems, Collision Analysis, Accident Causation, Crash Data Retrieval, Black Box, EDR, CDR Report Analysis, Tesla, Vehicle Inspection, Motorcycle, Pedestrian, Drone, Collision Reconstruction, Traffic Accident Reconstruction, Traffic Enforcement Strategy, Traffic Safety
A traffic collision reconstructionist accredited by the Accreditation Commission for Traffic Accident Reconstruction (ACTAR), a sUAV (drone) pilot licensed by the Federal Aviation Administration, and have completed the accident reconstruction certificate program by the Society of Automotive Engineers (SAE). With over 27 years in law enforcement, I have extensive experience with on-scene collision investigations ranging from minor fender-benders to multi-fatal collisions. I have investigated and assisted in the prosecution of hit-and-run collisions, DUI collisions, insurance fraud, vehicular manslaughter, and vehicular murder cases. Recognized as a subject matter expert in both criminal and civil courts for my knowledge of accident reconstruction, accident investigation, and general traffic enforcement.
I have over a thousand hours of training in accident reconstruction including but not limited to forensic mapping, pedestrian collisions, motorcycle collisions, emergency vehicle c...
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Maz Rostamian, PhD
Complex Loads and Acceleration Prediction
FEAD LLC
Mission Viejo, California
Accident Reconstruction, Aviation & Aerospace
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Product Liability, Mechanical Failure, Custom Simulations, Custom Demonstratives, Human Interaction, Injury Causation, Industrial Incidents, Marine Incidents, Aviation Incidents, Accident Reconstruction, Coupled Loads Analysis, Separation Dynamics, Launch Vehicle, Release Mechanisms, Deployables, G-Force Quantification
Mechanical engineering expert with 12+ years of specialized experience in multiphysics analyses—including MBD, FEA and CFD simulations—across aerospace, defense, robotics, renewable energy, and forensics. Provides objective, technically sound evaluations of mechanical failures, safety systems, and accident scenarios. Skilled in developing and presenting complex analyses in clear, defensible terms for attorneys, courts, and juries. Experienced in creating custom simulations, physics-based animations, and technical reports to support litigation, arbitration, and mediation. Recognized for strong communication, detailed documentation, and credible testimony under oath.
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Mohammad Atarod, PhD, PE
Testifying Expert-Accident Recon and Biomechanics
Atarod Biomechanics Laboratories
LAGUNA NIGUEL, California
Biomechanics, Accident Reconstruction
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Accident Reconstruction, Biomechanical Analysis of Injury, Premises Liability, Slips/Trips and Falls, Crash Data Retrieval, Heavy Vehicle EDRs, Blackbox Download, Photogrammetry, Computer Simulations, Failure Analysis, Human Factors, Laboratory Testing, 3D Laser Scanning, Expert Witness Testimony
I am a Senior Biomechanical Engineer and Accident Reconstructionist. I am registered as a professional mechanical engineer (PE) in California, Nevada and Colorado. I specialize in accident reconstruction, injury biomechanics and injury mechanism/causation analysis. I works on cases across the country, analyzing injuries in automotive collisions, industrial accidents, workers compensation claims, premises liability claims, slip/trip and falls, and sport/recreation accidents. I have provided litigation support to insurance companies, law firms, and automotive manufacturers/industries over the past 12+ years.
Technical Areas of Specialization:
- Biomechanical Analysis of Injury
- Accident Reconstruction
- Premises Liability; Slips/Trips and Falls
- Crash Data Retrieval; Heavy Vehicle EDRs
- Photogrammetry and 3D Computer Simulations
- Vehicle Systems Analysis
Services:
- Accident Reconstruction
- Biomechanical Analysis of Injury
- Premises Liability; Slips/Trips and Falls
- Crash Dat...
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Jose J. Granda, PhD, PE
Cadsim Engineering
Sacramento, California
Accident Reconstruction, Engineering
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Mechanical Engineering, Auto Accidents, Accident Biomechanics, EDR download, analysis, including TESLA, Work Place Accidents, Heavy Vehicles, Motorcycles, Pedestrians, Bicycles, Failure Analysis, Computer Models, Simulations, Finite Element Modeling (FEA), Human Factors, Vehicle Dynamics and Design
QUALIFICATIONS; Professor of Mechanical Engineering at the California State University in Sacramento, CA with 39+ yrs. experience. Professional Registered Mechanical Engineer (PE License, CA). An expert in accident reconstruction using computer simulations of accidents involving vehicles, trucks, heavy vehicles, motorcycles, biomechanics, pedestrians, bicycles, occupational, workplace, failure analysis impact forces, industrial accidents. EDR (Event Data Recorder) analysis including TESLA vehicles, patents.
EXPERT WITNESS EXPERIENCE: Written reports, depositions & trial experience.
SPECIALIZED TRAINING; Vehicle Dynamics and Design, Vehicle Safety & Crash Reconstruction, Accident Biomechanics, Finite Element Modeling in Computer Aided Design, Advanced Mechanical Design and Failure Analysis (CSUS); Motorcycle Accident reconstruction, (Northwestern University); EDR Certification, Tech 1, Tech II, EDR Analysis Certification (Collision Safety Institute); Applying Automotive EDR Da...
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Omair Siddiqui, MSME
Expert in Vehicle Crashes & Black Box Analysis
Los Angeles, California
Accident Reconstruction, Automotive Engineering
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Accident Reconstruction, Event Data Recorder (EDR), Blackbox, Simulations, PC-Crash, Pedestrian collision, Collision Analysis, Forensic Engineering, Crash Investigations, Accident Analysis, Vehicle Dynamics, Crash Reconstruction, Accident Simulation, Human Factors, Crash Data Analysis
Additional Training
➢ SAE, Accident Recon, Autonomous Vehicle and ADAS, September 2021
➢ SAE, Brake Control Systems: ABS, TCS, and ECS, March 2021
➢ SAE, Driver Distractions, December 2020
➢ PC-Crash Training Course (Advanced), February 2020
➢ SAE, Photogrammetry and Analysis of Digital Media, June 2019
➢ California Motorcyclist Safety Program (CMSP), June 2019
➢ Human-Vehicle-Environment (HVE) Forum (EDSMAC/EDCRASH Training), February 2019
➢ SAE, Applied Vehicle Dynamics, December 2018
➢ SAE, Applying Automotive EDR Data to Traffic Crash Reconstruction, November 2018
➢ SAE, Side Impact Occupant Safety, November 2018
➢ SAE, Vehicle Crash Reconstruction: Principles and Technology, August 2018
➢ Southwestern Association of Technical Accident Investigators (SATAI) Conference, July 2018
➢ Tesla EDR Training, June 2018
➢ Collision Safety Institute – Crash Data Retrieval (CDR) Technician Course, June 2018
➢ I-CAR Collision Repair Course, May-June 2018
➢ Digital Photography- California Cen...
You can also find Accident Reconstruction Expert Witnesses in:
Alabama, Arizona, California, Colorado, Connecticut, Delaware, Florida, Hawaii, Idaho, Illinois, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Montana, New Jersey, New York, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Texas, Virginia, Washington, West Virginia, and Wisconsin
