ACCIDENT AND FAILURE ANALYSIS 11220 W. Loop 1604 North • SAN ANTONIO, TEXAS • 78254 FAX 210.523.5694 • [email protected] 210.523.5696

JERRY G. WALLINGFORD, P.E. SYNOPSIS Investigations and analysis performed for over 32 years in matters involving automobiles; light, medium, and heavy trucks; recreational vehicles; construction, agricultural, and material handling equipment. Over 50 years experience in diversified automotive and mechanical design, development, testing, repair, and analysis as a mechanic, project engineer, engineering manager and a forensic consultant.

EXPERIENCE March 1982 to present

VERIFACT CORPORATION, San Antonio, Texas Senior Forensic Engineer - Conduct technical investigations and provide expert analysis with forensic expertise in the areas of accident reconstruction, failure analysis, product liability investigation, fire causation, safety analysis and equipment design. Provide services relative to; expert testimony in deposition and trial, vehicle and component testing, photographic documentation, evidence preservation, engineering reports, standards and literature research, and courtroom exhibits.

Oct 1976 to Feb 1982

EG&G AUTOMOTIVE RESEARCH INC., San Antonio, Texas Manager (Jan 1980 - Feb 1982) - Directed technical engineering operations of 175 engineers, supervisors, technicians, mechanics and drivers involved with experimental and production vehicle tests. These included passenger cars, light, medium and heavy trucks, operating on specialized highway and off-road durability, reliability, and evaluation procedures.

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Project Engineer (Oct 1976 - Jan 1980) - In charge of field testing, combinations testing, and special projects. Supervised daily testing of client prototype vehicles and heavy duty brake dynamometer testing. Within the responsibilities of both these positions was failure analysis, review of section reports and engineering data, evaluation of test components on vehicles, and recommendation of possible design solutions to the clients and their engineers.

April 1975 to Oct 1976

CLARK EQUIPMENT COMPANY, Melroe Division, Bismarck, North Dakota Senior Design Engineer (Feb 1976 - Oct 1976) - Position entailed leading an engineering team in the vehicle design, prototype component construction, and testing for a new self-propelled agricultural spray vehicle. Personally performed engineering calculations and analysis relative to engine, transmission, drivetrain, frame, suspension, brakes and systems related to these components. Design Engineer (Apr 1975 - Feb 1976) - Redesign and on-going production engineering follow-up relative to the existing product line of self-propelled field sprayers, grain drills and fertilizer applicators.

July 1972 to April 1975

FORD MOTOR COMPANY, Truck and Recreational Products Operations, Dearborn, Michigan Development Engineer - Responsible for durability testing of all light truck powertrain components (engines, transmissions, transfer cases, drive axles and drive lines) on vehicular test in Michigan, Arizona, and Texas. Special assignments relative to prototype anti-lock brake systems, cruise control systems, and full-time four-wheel drive. Position entailed vehicle testing during highway and off-road conditions, failure analysis, development engineering interface with design engineers, vehicle/product evaluation, prototype vehicle build, production line start-up of new products and production vehicle assembly coordination.

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July 1962 to June 1972

J & D AUTOMOTIVE, Salem, Oregon Self-Employed - In a full and part-time capacity with specialization in automotive engine and drivetrain fabrication, modification and repair. Day-to-day duties involving special recreational vehicle modifications to pickup and utility vehicles; special modifications relative to off-road and racing, speed and performance applications; and general car and light truck repairs.

TEACHING Sept 1982 to June 1984

University of Texas at San Antonio - Adjunct faculty member instructing undergraduates in courses relative to engineering design and engineering graphics.

REGISTRATION Professional Engineer, State of Texas, 1977, No. 41607 Certified by the National Council of Engineering Examiners. PROFESSIONAL MEMBERSHIPS Society of Automotive Engineers (SAE) American Society of Mechanical Engineers (ASME) American Academy of Forensic Sciences (AAFS) Association for the Advancement of Automotive Medicine (AAAM) Southwestern Assoc. Technical Accident Investigators (SATAI) TECHNICAL COMMITTEES Society of Automotive Engineers (SAE) Member, Fire Safety Committee Member, Crash Data Collection and Analysis Committee Chairman, Truck Deformation Classification - Task Force, J1301

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SPECIAL HONORS Pi Tau Sigma, National Mechanical Engineering Honor Society Tau Beta Pi, National Engineering Honor Society Sigma Tau, National Engineering Honor Society Theta Delta Phi, National Scholastic Honor Society EDUCATION

2009

University of North Florida Institute of Police Technology and Management Orlando, Florida Special Problems in Traffic Crash Reconstruction (36 hours) Validation for the Use of the Drag Sled in Determining A Reasonable Range for the Coefficient of Friction in Traffic Crash Reconstruction The Application of the Throw Distance Formulae Damage Profile Analysis Using Microsoft Excel in Graphing Ford ACM and PCM Data Commercial Motor Vehicle Foundation Brakes Hybrid Vehicles: The New Challenges in Crash Investigations Modern Technology for Measuring Coefficient of Friction and Vehicle Dynamics Using Simulation to Reconstruct and Visualize Motor Vehicle Crashes Single-Image Planar Rectification and Multi-Image Close-Range Photogrammetry in Crash Reconstruction Protocol and Procedures for Drag Sled Users CDR Release 3.1 Airborne Trajectories and Analysis Lamp Analysis Motorcycle Lateral Acceleration and Lean Angles REC-TEC Update Vehicle Crash Testing Vehicle to barrier 3 Vehicle–to-vehicle impact

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2007

Collision Safety Institute Seattle, Washington Crash Data Retrieval Technician (8 hours) Introduction to the Bosch/Vetronix CDR system components Process overview Data collection process, generally What gets recorded Types of events Function overview System overview Coverage Methodology Connectivity The mechanics of a download System operation details CDR System software operation Troubleshooting the CDR software System output Saving a CDR file Printing a CDR label Legal considerations Search and seizure issues, generally Data collection exercise In class download exercises Crash Data Retrieval Data Analyst Certification (32 hours) Legal considerations, generally Privacy and notice Admissibility issues Terms and conventions Terms and concepts Delta-v, PDOF Sensing evolution Airbag control modules In-vehicle data transmission OBD II and DTCs The airbag control algorithm Reading a CDR report for a GM vehicle Event description and identification CDR Report data elements Internal vs. external data elements Apparent anomalies Using crash data Hexadecimal data Crash test data to illustrate reliability Reading a CDR report for a Ford vehicle

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Event Storage The “System Status” report and timing information Ford module group distinction Crash test data to illustrate reliability Ford PCM data Introduction to the new Chrylser release Admissibility issues summary

2005

Society of Automotive Engineers, (SAE) Detroit, Michigan Fundamentals of Automotive Fuel Delivery Systems (14 hours) Fundamental Fuel Delivery Systems SI engine fuel delivery systems Diesel engine fuel delivery systems Fuel Cell Advanced fuel delivery system concept Fuel Types and Properties Fuel Delivery Subsystem Working Principles Delivery modules Fuel pump assemblies Injector assemblies Injection types Fuel pressure regulation Onboard refilling vapor recovery system (ORVR) and vapor management Fuel level indication mechanism Fuel filtration Fuel delivery metering Fuel Delivery System OEM and Government Regulatory General Requirements Functionality requirements FTP highway and urban cycles Durability requirements Safety requirements Permeation requirements Contamination life requirements Static charge and abatement techniques Fuel Delivery System and Components Evaluation and Testing Methods Fuel tank Fuel lines Delivery module Pump Injector Regulator

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ORVR valve Fuel level gauge Fuel filter Vapor canister Fuel delivery driver module Leak testing Electrical static discharge testing Permeation testing Public Agency Training Council Houston, Texas Hands-On Vehicle Fire Investigation (22 hours) Proper sequence for investigating vehicle fires Vehicle design and electrical systems Wiring used in motor vehicles and testing procedures Safety devices (fuses, breakers and fusible links) How to document the vehicle fire Photographing the vehicle fire scene Collecting evidence from the vehicle fire scene National Fire Protection Association 921 Guide for Fire and Explosion Investigation Recall Information, technical service bulletin information, consumer complaint information and general research information regarding vehicle fire investigations Hands-on vehicle examination and documentation (Group exercise) Introduction to hybrid vehicles Heavy equipment investigations 2004

Society of Automotive Engineers, (SAE) Detroit, Michigan The Tire as a Vehicle Component (8 hours) Brief history of tires and wheels Types of tires Tire construction features Longitudinal Tire Properties Braking and driving forces Rolling resistance Lateral Tire Properties Cornering force Camber thrust Ply steer and conicity forces Combined Longitudinal and Lateral Forces Friction ellipse Load transfer in cornering

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The Tire as a Spring Linear vs. non-linear springs Rolling vs. non-rolling behavior Tire frequency response Tire and Wheel Non-Uniformities Force and moment variations Low speed/high speed effects Tire manufacturing issues Influences of Tire Properties on Vehicle Response Vehicle stopping distance Vehicle ride Vehicle handling Vehicle high speed performance European vs. North American requirements Future Technological Developments Run-flat tires Cordless cast tires Intelligent tires Society of Automotive Engineers, (SAE) Detroit, Michigan Tire and Wheel Safety Issues (8 hours) Vehicle accident statistics The role of the tire in accident prevention/causation Tire construction features Tire failure modes Tire Grip and Related Phenomena Tire-road friction characteristics Tire braking forces Factors influencing vehicle stopping distance Combined braking and cornering Hydroplaning High speed behavior and standing waves Brake Performance Front wheel/rear wheel lock-up Braking efficiency Anti-lock braking and other systems The Tire as a Pressure Vessel Burst pressure Energy release in punctured tires Wheel issues Tire and/or wheel case studies Over-steering Vehicles Meaning of under-steer coefficient The contribution of the tire Jerry G. Wallingford - Page 8

Vehicle Rollover Analysis History of rollover Rollover threshold Tripping mechanisms Tire effects Operating conditions Public policy issues

2002

University of Washington College of Engineering Seattle, Washington Automotive Fire Investigation: Methods & Tools (16 hours) Collision and non-collision fires State/national accident database analyses Standards Federal Motor Vehicle Safety Standards 301 and 302 Society of Automotive Engineers National Fire Protection Association Scientific Method Analytical framework Court Decisions Expert Testimony Introduction to Fire Science Automotive Mechanics (related to fire investigations) Fuel systems (gasoline and diesel) Lubricating systems Cooling systems Electrical and ignition systems Exhaust and emission controls Steering, brakes and drivetrain Combustible Fluids Fluids Gasoline and diesel fuel Engine oil Coolant Power steering fluid Automatic transmission fluid Brake fluid Polymeric Materials Identification of Ignition sources Hot surface (autoignition) Electrical or mechanical spark Minimum ignition energy Electrical resistance heating Case studies Characterization of Fire Damage

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Origin determination Burn patterns Myths Propagation Paths and Times Pathways and automotive design factors Combustibility of automotive materials Environmental influences Videos of burn tests Arson Investigation Arson statistics Arson investigation techniques and technology Analytical tests Key pathway analysis Successful arson intervention Boston arson reduction program Collision Fires Collision type (frontal, rear, rollovers, etc.) Characterization of collision damage Vehicle Defects Recalls Relationship to service Documentation to service Data collection forms Interview techniques and questions Photo documentation and evidence preservation Preservation of post-fire evidence Safety

2001

International Association of Arson Investigators Louisville, Kentucky NFPA 921 – Structural and Vehicles Fires (20 hours) History and Development of NFPA 921 Utilizing NFPA 921 at the Fire Scene The Nexus Between Fire and Law Use of NFPA 921 in Court What is New in NFPA 921 – 2001 Edition Origin and Cause on Vehicle Fires Utilizing NFPA 921 Post-Impact Fires Electrical Fires in Components Mechanical Fires Fuel Fed Fires Observed 3 Live Vehicle Burns

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2000

Society of Automotive Engineers, (SAE) Richmond, B. C., Canada Commercial Vehicle Crash Investigation and Reliability of Scene Evidence (8 hours) On-Scene Investigation Methodology Police and Engineer Perspectives First On-Scene Crash Analysis On-Scene Identification and Marking of Road Impact Artifacts Attributed to Crash Tire Weight Shift Marks Scene Survey Total Station, Off-Set Method, Photogrammetry Scene Photo Documentation Preliminary Vehicle Inspection Essential Measurements On-Board Data Download, Trip Recorders, Log Books Failed Components Vehicle Recovery Off-Scene Investigation Methodology Secondary Vehicle Inspection In-Depth Examination Failed Components Load Examination Vehicle Parameter Measurements Engine, Transmission Center Of Gravity Estimates and Accuracy Use of Exemplar Vehicles Available Manufacturer Information Roadway Geometrics The As-Built Plan On-Site Measurement Aerial Photography Testing Instrumenting and Testing an exemplar unit Rollover Calculations Heavy Vehicle Rollover TOPTEC: Prevention, Analysis and Reconstruction (16 hours) Developing Protection for Heavy Vehicle Occupants Involved in a Rollover Heavy Vehicle Rollover Accidents, What Can Be Done to Prevent Them Rollover Modeling Methodologies and Options in MADYMO

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How to Reduce Heavy Vehicle Rollover Severities Vehicle Rollover in Virtual Reality Truck Crashworthiness in the United States Collisions of Heavy Articulated Vehicles Heavy Vehicle Interaction with Roadside Hardware Heavy Truck Rollover Crashworthiness: Testing Methods and Development of Recommended Practices Accident Data Recorders Reconstruction and Analysis of Real World Truck Rollovers Large Truck Reconstruction Evidence Collection Royal Canadian Mounted Police, University of British Columbia and the Insurance Corporation of British Columbia Richmond, B. C., Canada Heavy Vehicle Rollover Demonstration (8 hours) Observed staged rollovers of 2 tractor/semitrailer combinations

1998

University of North Florida Institute of Police Technology and Management Jacksonville, Florida Human Factors and Visibility Concepts Hampering Perception/Reaction Times (24 hours) Human Information Processing Model Perception/Reaction Times Stimulus Identification Response Selection Response Programming Attention Memory Visual Capability Warning Signals and Information Processing Elderly Drivers Young Novice Drivers Measuring Nighttime Visibility Objective Measuring Subjective Analysis Complex Limiting Factors Considerations in Perception - Response Time Human Variability vs. Average Factors Affecting Visibility at Night Visual Acuity Implications Major Limitations in Visual Performance

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Night Visibility Problems Perception - Response Time Special Problems in Perception/Reaction

1997

Society of Automotive Engineers (SAE) Troy, Michigan Brakes: Design & Safety (16 Hours) Braking Process & Stopping Distance Comparison of Brake Safety Standards Worldwide Elements of Brake System Design Braking Stability Brake Force Distribution Analysis of Safety-Critical Brake Components Brake System Failure & Defects Design & Performance Requirements of ABS Brakes Braking of Commercial Vehicles Brake Accident Causation

1996

International Association of Arson Investigators Houston, Texas Texas A&M University, Fire Protection Training Division Scientific Fire Investigation (16 Hours) Fire Scene Analysis, An Engineering Perspective Computer Fire Modeling Fire Scene Safety How to Comply with OSHA Subrogation Expert Witness Preparation Accident Investigation and Reconstruction Practices Committee (SAE) Richmond, B. C., Canada Vehicle Crash Testing (16 Hours) Participated in 5 vehicle crash tests to evaluate underride crush characteristics during vehicle-to-barrier impacts.

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1994

Lee S. Cole & Associates, Inc. San Diego, California Investigation of Vehicle Fires (16 Hours) Mechanics of Fire Fire Origin Mechanical Systems Electrical Systems Explosions Arson Combustible Temperatures, and Melting Points Society of Automotive Engineers, (SAE) Scottsdale, Arizona Automotive Vehicle Dynamics (32 Hours) Tire Mechanics: Hysteresis Hydroplaning Tractive Effects Friction Circle Concept Cornering coefficients Simple Handling Models: Ackermann Steer Under - Over - and Neutral Steer Definitions Two Degree-of-Freedom Handling Model: Equations of Motion Slip Angles Stability Analytical Solutions Suspension Kinematics: Roll Centers Roll Steer Camber Effects Suspension Derivatives Spring and Damper Forces Suspension Types Three-Degree-of-Freedom Handling Model: Roll Performance Suspension Effects Stability Brake Dynamics: Unsteady Forward Motion Lateral Braking Stability Brake Efficiency Maximum Performance Brake Force Distribution Incipient Lock-up ABS Performance

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1993

Society of Automotive Engineers, (SAE) Dearborn, Michigan Vehicle Rollovers TOPTEC (8 Hours) Vehicle rollover dynamics and occupant kinematics. Contributions of vehicle design, structural stiffness and seatbelt usage to the rollover event.

1992

BH2VK Crash Testing San Bernardino, California Vehicle Crash Testing (20 Hours) Participated in 5 vehicle crash tests to include vehicle-tovehicle and vehicle-to-barrier impacts.

1990

Engineering Dynamics Corporation Houston, Texas Computer Aided Accident Reconstruction with EDCRASH (40 Hours) Collision Deformation and Principle Direction of Force Classification Vehicle Damage Measurement Calculation Procedures Common Velocity and Separation Velocity Checks Uses of Linear Momentum Trajectory Simulation University of North Florida, Institute of Police Technology and Management Tempe, Arizona Inspection of Commercial Vehicles in Accidents (20 Hours) Air Brake Systems Tachograph Charts & Log Books Vehicle Inspection Routine Federal Motor Carrier Regulations Hazardous Materials Handling Commercial Vehicle Accident Investigation (20 Hours) Weight Shift of Articulated Vehicles Rollover Speed Calculations Braking Efficiency of Commercial Vehicles Speed Analysis Outside Skid Testing

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1988

University of Wisconsin Madison, Wisconsin Product Safety & Liability Prevention - Role of Warnings (16 Hours) Duty to Warn & Instruct Legal Responsibility FMC's Product Safety Sign and Label System Successfully Defending the Adequacy of Warnings Developing & Applying a Program for Product Safety Alerting How to Evaluate the Adequacy of Warnings & Instructions

1985

University of Michigan Ann Arbor, Michigan Mechanics of Heavy-Duty Trucks and Truck Combinations (40 Hours) Basic Properties of the Pneumatic-Tired Vehicle Mechanical Properties of Truck Tires The Mechanical and Kinematic Properties of Heavy Vehicle Suspensions Analysis and Modeling of Suspension Systems Truck Steering Systems Mechanics of Curvilinear Travel at Zero Speed Brakes and Brake Actuation Systems Thermal Aspects of Brakes and Brake System Modeling Properties of Anti-Lock Systems Truck Frames Acceleration Performance of Heavy Trucks Methods of Modeling the Truck Driver Truck Ride Response Turning of Single and Multi-Unit Trucks The Cornering Response of Commercial Vehicles Braking Capabilities of Heavy-Duty Trucks Mechanics of the Rollover Process Influence of Slosh and Shifting Loads on Turning and Rollover Behavior Truck Parameter Measurements

1984

Northwestern University, Traffic Institute Evanston, Illinois Technical Accident Investigation (80 Hours) Levels of Traffic Accident Investigations Perspective Grid Intersection Sight Distances Road Hazard Analysis Skidmark Analysis Lamp Examination

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Vehicle Tires: Examination, Handling Characteristics, Stability Vehicle Inspection and Damage Documentation Investigative Photography Physics Relative to Accident Reconstruction and Vehicle Dynamics Association for the Advancement of Automotive Medicine Copper Mountain, Colorado Biomechanics of Impact Trauma (24 Hours) Vehicle Interior Safety Design Crash Severity Assessment & Vehicle Design Structure Injury Scaling Systems & Disability Measurements Anatomy, Types & Mechanisms of Injury, Tolerance Criteria & Limits: Head Injury Tolerance Neck and Spine Chest Abdomen, Pelvis & Extremities Facial & Other Soft Tissue The Biological System from the Cellular Level to the Whole Body Occupant Protection Restraint Systems Pedestrian Protection Motorcyclist Protection Head Protection The National Highway Traffic Safety Administration & Biomechanics: A Perspective Implications for Future Vehicle Design

1983

Transafety, Inc. San Antonio, Texas Highway Hazards Correction, Protection and Liability (8 Hours) Development of Road Designs for Safety Who's Creating Hazards on the Road Identifying Hazards & Designing the Roads for Safety Identifying Operational Hazards Caused by Poor Management Accident Investigation Tips Sources of Information on Road Design, Operation, Maintenance, Safety & Research

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Texas A&M University, Texas Traffic Safety Institute College Station, Texas Advanced Accident Reconstruction (80 Hours) Deviation of Speed Formulas Crush Deformation Calculations Concentration of Linear Momentum and Vector Analysis Concepts of Principle Direction of Force Change in Velocity Analysis Time and Distance Equations Fall and Vault Formulas Rollover Analysis Participation in skid, critical speed, vault, lane change and acceleration testing

1973

Wayne State University Dearborn, Michigan Safety and Human Factors Engineering (1 Semester) Driving Task Simulation Characteristics of Drivers Visibility and Legibility of Highway Signs Driver Information Systems Skills, Judgment, and Information Acquisition in Driving Human Factors in Vehicle Design The Pedestrian Effects of Driver Fatigue Effects of Alcohol and Drugs on Driving Behaviors Wayne State University Dearborn, Michigan Failure Analysis (1 Semester) Structure and Mechanical Properties of Metals Alloys Phase Transformations Solidification of Metals Aluminum Steels and Cast Iron Other Metals Metallurgical Techniques Mechanical Property Measurement Optical Metallography X-ray Methods Modes of Failure

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Overloading Fatigue Corrosion Tribology Recognizing Failure Modes Causes of Failure Design Errors Manufacturing Errors

1972

Oregon State University Corvallis, Oregon Bachelor of Science Degree in Mechanical Engineering Engineering courses included: Automotive Engineering Engineering Mechanics Engineering Design Mechanical Analysis Mechanical Laboratory Thermodynamics Nature and Behavior of Materials Manufacturing Processes Mechanics Processes Mechanics of Solids Mechanical Engineering Economy Engineering Transfer and Rate Processes Mechanical Hydraulics

PARTIAL LIST OF RESEARCH PUBLICATIONS “Heavy Truck Engine Retarders: Testing and Theory,” SAE Technical Paper 2011-01-0280, Steven R. Christoffersen, Jerry G. Wallingford and Bill Greenlees, Verifact Corporation, April, 2011. “A Primer on the Global Positioning System and Its Application in Accident Reconstruction,” Accident Reconstruction Journal, Steven R. Christoffersen, Scott P. Altman, Jerry G. Wallingford, Bill Greenlees, Verifact Corporation, January/February 2010.

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“Laboratory Impact Evaluation of Fuel Tank Filler Anti-Spill Valves in Polymer Fuel Tanks,” Jerry G. Wallingford and Clarence R. Hitchings, Verifact Corporation, February 2008. “A Comparison of Rollover Characteristics for Passenger Cars, Light Duty Trucks and Sport Utility Vehicles,” SAE Technical Paper 2002-01-0942, Scott Altman, Dean Santistevan, Clarence Hitchings, Jerry G. Wallingford and Bill Greenlees, Verifact Corporation, March, 2002. “A Discussion On Using A Pendulum as a Method for Impact Testing Vehicle Sub-Systems,” SAE Technical Paper 2002-010687, Clarence R. Hitchings and Jerry G. Wallingford, Verifact Corporation, March, 2002. “Energy Supply and Time Dependence on Filament Deformation,” SAE Technical Paper 970945. Steven R. Christoffersen, Jerry G. Wallingford, William Greenlees, Thomas P. Minihan, and Kenneth L. Rice, Verifact Corporation, February 1997. “Deceleration Factors on Off-Road Surfaces Applicable for Accident Reconstruction,” SAE Technical Paper 950139. Steven R. Christoffersen, Marlan J. Jarzombek, Jerry G. Wallingford, William Greenlees, and Thomas P. Minihan, Verifact Corporation, February 1995. “Tire-Roadway Friction Coefficients on Concrete and Asphalt Surfaces Applicable for Accident Reconstruction,” SAE Technical Paper 900103, Jerry G. Wallingford, William Greenlees, and Steve Christoffersen, Verifact Corporation, February 1990. “Tools and Devices for Accident Investigation and Reconstruction” SAE Technical Paper 900372, Jerry G. Wallingford and Ken G. Stallman, Verifact Corporation, February 1990. “Dynamic Handling Response of Tractor-Semitrailers Using Mini and Micro Computers,” SAE Technical Paper 852358, J. Ed Martinez, Texas A & M University and Jerry G. Wallingford, Verifact Corporation, December 1985. “Computer Aided Accident Reconstruction of TractorSemitrailers,” SAE Technical Paper 851529, J. Ed Martinez, Texas A & M University and Jerry G. Wallingford, Verifact Corporation, September 1985. Jerry G. Wallingford - Page 20

“Procurement and Emissions Testing of 1969 and 1972/73 Model Year Gasoline Powered Light Duty Trucks, (60018500 lbs GVWR).” L. K. Kott, J. G. Wallingford, et al. Prepared by EG&G Automotive Research, Inc., for Environmental Protection Agency. Contract No. 68-08-2683, June 1980. “Impact Resistance of Non-Ferrous Passenger Car Wheels Modification Number 2. Final Report.” J. G. Wallingford. Prepared by EG&G Automotive Research, Inc., for the U.S. Department of Transportation, Contract No. DOT-HS-7-01657, September 1978. “Impact Resistance of Non-Ferrous Passenger Car Wheels. Final Report.” L. Bowers and J. G. Wallingford. Prepared by EG&G Automotive Research, Inc., for the U.S. Department of Transportation Contract No. DOT-HS-7-01657, February 1978. “Testing of Motor Vehicles for Compliance with FMVSS 121, Air Brake Systems - Truck, Buses and TrailersDynamometer and Equipment Tests.” Jerry G. Wallingford, Prepared by EG&G Automotive Research, Inc., for the U.S. Department of Transportation, Contract No. DOT-HS-6-01349, January 1977 through March 1978. TECHNICAL PRESENTATIONS “Laboratory Impact Evaluation of Fuel Tank Filler Anti-Spill Valves,” American Academy of Forensic Sciences, Washington, DC., February 2008. “Dealing with Daubert Challenges,” Missouri Association of Trial Attorneys, Lake Ozark, Missouri, June 2000. “Energy Supply and Time Dependence on Filament Deformation,” Society of Automotive Engineer, 1997 International Congress and Exposition, Detroit, Michigan, February 1997. “Tire-Roadway Friction Coefficients on Concrete and Asphalt Surfaces Applicable for Accident Reconstruction,” Society of Automotive Engineers, 1990 Congress & Exposition, Detroit, Michigan, February 1990.

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“A Technical Approach to Forensic Engineering and Accident Investigation,” South Texas Section of Society of Automotive Engineers, San Antonio, Texas, April 1988. “Dynamic Handling Response of Tractor-Semitrailer Using Mini and Micro Computers,” Society of Automotive Engineers, 1985 Truck & Bus Meeting and Exposition, Chicago, Illinois, December 1985. “Computer Aided Accident Reconstruction of TractorSemitrailers,” Society of Automotive Engineers International Off-Highway & Power Plant Congress & Exposition, Milwaukee, Wisconsin, September 1985. “Elements of Accident Investigation and Reconstruction,” Texas Association for Professional Transportation, Longview, Texas, June 1985.

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