Curriculem Vitae - State Patrol - Erdmann

of 19 Curriculum Vitae –Thomas W. Erdmann
Wisconsin State Patrol
Bureau of Specialized Services
Technical Reconstruction Unit
433 West St. Paul Ave., Suite 300
Milwaukee, WI 53203
608-498-0840
414-227-2166
Curriculum Vitae
Thomas W. Erdmann
Area of Specialization:
Expert analysis of motor vehicle collisions. Technical expertise in numerous crash reconstruction
disciplines including speed analysis, occupant kinematics, pedestrian crashes, time-distance
relationships, lamp examination, road signing evaluation, crash data retrieval, and more. Specialist in
indentifying and collecting vehicle and roadway evidence at crash and crime scenes. Reconstructed,
investigated, or assisted on over 1000 traffic crashes.
Accreditations:
Accredited by: "The Accreditation Commission for Traffic Accident Reconstruction" (ACTAR) September
19, 2003
Demonstrated academic achievement, completion of accident specific training, applied experience in
the field, provided expert testimony, and successful completion of the ACTAR full accreditation written
and practical examination.
Work Experience:
2013 – Present Law Enforcement Supervisor
Wisconsin State Patrol Technical Reconstruction Unit
Primarly responsible for the implementation, administration, presentation, and evaluation of the
Wisconsin State Patrol Technical Reconstruction Unit. This includes both crash reconstruction and crime
scene investigations. Responsible for the supervision, counseling, evaluation and development of
Wisconsin State Patrol employees, instructors, trainees. Responsible for the coordination and
supervision of facilities, financial resources, materials, and support personnel, in relation to the
Technical Reconstruction Unit. Serve as a technical advisor to Division administrative personnel,
Technical Reconstruction Unit personnel and other law enforcement agencies.

2006 – Present Accredited Reconstruction Specialist
Wisconsin State Patrol Technical Reconstruction Unit
Full time position primarily responsible for conducting comprehensive investigations of crash and crime
scene incidents for the State of Wisconsin. Provide proper application of engineering and scientific
principles in the crash and crime scene reconstruction field. Respond to crash and crime incident
scenes in order to perform a comprehensive collection and preservation of evidence. Obtain necessary
search warrants for evidence collection purposes. Assist with motor vehicle mechanical inspections.
Operate scientific equipment such as accelerometers, total stations, and crash data retrieval systems.
Provide expert witness testimony for criminal and civil cases. Consult with city, county, state, and
federal law enforcement officers and attorneys regarding scientific conclusions. Manage regional-level
reconstruction personnel and equipment. Instruct current curriculum for crash reconstruction in-service
and crash investigation courses at the Wisconsin State Patrol Academy. Coordinate, maintain, and
provide training for the Wisconsin State Patrol’s forensic mapping survey equipment.
1996 – 2006 Regional Crash Reconstructionist
Wisconsin State Patrol Bureau of Field Services
Perform crash and crime scene reconstruction response and analysis in addition to enforcement patrol
functions as a state trooper. Provide expert analysis and testimony for criminal and civil cases in
southeastern Wisconsin. Consult with city, county and state law enforcement officers and attorneys
regarding scientific conclusions. Manage southeast regional-level reconstruction personnel and
equipment.
1989 - 2006 State Trooper
Enforce state traffic and criminal laws, administrative rules and regulations, with a primary emphasis on
highway safety. Investigate traffic crashes and provide assistance to motorists and the public. Provide
emergency services to include response to traffic crashes, natural or man-made disasters and civil
disorders. Represent the State of Wisconsin in job-related civil and criminal judicial processes including
serving as a witness. Perform and coordinate specialized law enforcement activity, functions and
assignments, including highly complex and technical services.
1995 – Present Law Enforcement Instructor
Wisconsin State Patrol Bureau of the Academy
Instructor at the Wisconsin State Patrol Academy for Basic Crash Investigation, Technical Crash
Investigation, Vehicle Dynamic, Forensic Mapping, and Crash Reconstruction In-service. Develop course
curriculum for evidence collection and processing in the Technical Crash Investigation course. Develop
course curriculum for the Forensic Mapping with Total Stations course.
2001 – 2002 Law Enforcement Instructor
Waukesha County Technical College Police Academy
Develop course curriculum and instruct Basic Crash Investigation at the Waukesha County police recruit
academy.

1999 – 2004 Background Investigator
Complete background investigations on potential new employees of the Wisconsin State Patrol. Prepare
background investigative reports and submit to human resources department.
1988- 1989 State Motor Vehicle Inspector
Wisconsin State Patrol Bureau of Highway Safety
Enforce state traffic laws, administrative rules and regulations, with a primary emphasis on motor
carrier size, weight, and equipment laws. Represent the State of Wisconsin in motor carrier
enforcement judicial processes including serving as a witness.
Specialized Crash Reconstruction Related Training:
November 2016 2016 Trimble Dimensions Survey Conference
Location: Las Vegas, NV
 Trimble Access – New Features and Productivity Tips
 Trimble SX10 Scanning Total Station
 Forensics Field Data Capture
 Forensics Office Software
 Forensic Investigative Solutions
September 2016 2016 Vehicle Homicide Conference
Location: Stevens Point, WI
 DNA Evidence in Crash Cases – Tara Jenswold, Jennifer Honkanen,
Thomas Erdmann
 Scanner Technology in Crash Reconstruction & Crime Scene Mapping –
Ryan Zukowski
 3-D Printing as Evidence in Crash Cases – Justin Bender, Steve Yahr
 Legal Update – Tara Jenswold, Emily Thompson
 Drug Impaired Drivers- Amy Miles
 Tire Forensics – T.J. Tennent
 Special Issues in Non-OWI Crashes – Gerald Fox, Tara Jenswold, Emily
Thompson
 Cell Phones & GPS Technology – Cindy Murphy
June 2016 Tennessee Traffic Crash and Safety Symposium
Location: Nashville, TN
 Crash Testing – Brad Muir
 Cell Phone Apps – Robert Wyman
 Motorcycle Crash Investigation – Tony Becker
 CDR Update – Rick Ruth
 Spin Analysis – John Daily
 Momentum – John Daily
 Expert Testimony – Jim Camp

May 2016 World Reconstruction Exposition
Location: Orlando, FL
 Human Factors
 NTSB Accident Investigations
 Autonomous Driving and Collision Avoidance Systems
 EDR Update
 Video Analysis of Traffic Collisions
 Rollover Crashes / Pedestrian Collisions
 15 Live Crash Tests
 Interactive Field Day
 Crash Test Review
May 2015 Tennessee Traffic Crash and Safety Symposium
Location: Franklin, TN
 Courtroom testimony – John Kwasnoski
 Human Factors Update – Jeff Muttart
 Pedestrian Crash Investigation – Tony Becker
 Hit-and-Run Crash Investigation – Robert Lee
 Trailer Stability – John Daily
 Product Safety Trends – Nissan America
 Excel for Crash Math – Andy Rich
 Tire Failure Analysis – T.J. Tennent
March 2015 2015 Vehicle Homicide Conference
Location: Appleton, WI
 Rollover Crashes – Pete Luepke
 Special Issues in the Investigation & Prosecution of Rollover Crash Cases
- Thomas Erdmann, Thomas Parrott, Tara Jenswold
 Crash Simulations – Duane Meyers
 Vehicle Crash Research & Wisconsin CIREN Center - Dr. Frank Pintar
 The Role of Coroner/Non-Physician Medical Examiner – Larry Mathein
 The Role of the Physician Medical Examiner – Dr. Michael Stier
 Technical Report Writing in Crash Reconstruction Cases – Ryan Zukowski
 Conservation of linear Momentum – Jason Schwarz
 Mechanical Inspections – Richard Krisher
 Fourth Amendment Update – David Perlman
February 2015 State Patrol Crash Reconstruction In-service
Location: Wisconsin State Patrol Academy – Fort McCoy, WI
 Facebook – Michael Marquardt
 Confessions & Interviews – Michael Marquardt, Thomas Parrott
 Crash Data Retrieval Update – Will Ryan, Matthew Johnson
 Legal Update – Tara Jenswold, Dave Perlman, Emily Thompson
 Utilizing EDR data in momentum analysis – Jason Schwarz
 Rollover Crashes – Justin Bender
 Railroad Crash Investigation – Ryan Zukowski

November 2014 Trimble Dimensions 2014 Conference
Location: Las Vegas, NV
 Productivity Beyond GNSS/ Trimble R10 system
 Using Trimble Access measure codes
 How to understand and get the most of your total station
 Crime scene data collection
 Trimble Business Center deliverables from the V10
 Scanner technology
September 2014 Advanced Crash Reconstruction Utilizing Human Factors
Location: Brookfield, WI
Instructor: Jeffery Muttart – Northwestern University
 Reaction and response time research
 Weather influences to driver response
 Nighttime response
 Path intrusions
 Gap acceptance
 Driver search patterns
 Driver response to lead vehicles, traffic signals, & decision making
 I.DRR Software
May 2014 Tennessee Traffic Crash and Safety Symposium
Location: Franklin, TN
 Rollover Crash Investigations –
 Crash Testing – John Daily, Jeremy Daily
 CMV EDR Data – Jeremy Daily
 Momentum Fundementals – John Daily
 EDR Update – Brad Muir
 Legal Update – Jim Camp
 Crash Data Presentation – John Daily, Jeremy Daily, Brad Muir
January 2014 State Patrol Crash Reconstruction In-service
 Employee Assistance Program – Andrew Peterson
 Legal Update/Warrants – Tara Jenswold, Emily thompson
 Open Records – Shannon Ballhorn, Daniel Graff
 ECM/ACM update – Tim Austin, Will Ryan
 Coroner Protocol – Barry Irmen
 Critical Incident Investigations – Vern Vandeberg
 Aerial Photographs – Tiffany Novinska
September 2013 2013 Vehicle Homicide Conference
Location: Brookfield, WI
Instructors: Tara Jenswold, Emily Thompson, Mindy Winter, Cindy Murphy,
Ryan Zukowski, David Perlman, Amy Miles, Scott Kuntz,
Kristin Roman, Thomas Erdmann, Jason Schwarz, Suzanne Zinkel,
Timothy Austin, Thomas Parrott, Charlie Klauer
 Distracted Driver/Cell Phones
 Blood Draws in Crashes

 Video Evidence
 Forensic Mapping with Multiple Total Stations
 Using Visual Aids in Trial
 EDR update
June 2013 2013 Midwest Association of Traffic Accident Investigators Conference
Location: Wisconsin Dells, WI
Instructors: Northern Illinois Staff
 Conservation of Momentum with CDR Applications – Gary Cooper
 Human Factors in Crash Reconstruction – Jeffrey Muttart
 Advanced Energy Analysis (Force Balance) – Michael DiTallo
 Crash Data Retrieval System Update – Rusty Haight
March 2013 Wisconsin Association for Identification Annual Conference
Location: Rothschild, WI
 Evidence Best Practices
 State of Wisconsin Fusion Center
 Overdose Death Investigation
 Digital Evidence - Gordy Kowaleski, Shawano Sheriff’s Dept.
 Case studies
February 2013 Advance Collision Reconstruction with Excel Applications
Instructor: C. Gregory Russell
 Conservation of Linear Momentum
 Vector Diagramming
 Restitution and Closing Speed
 Force Balance
 Braking Efficiency of Commercial Vehicles
 Working with Closing speed, Delta V, & PDOF
August 2012 State Patrol Crash Reconstruction In-service
 SAE Deceleration Spin Analysis – Duane Meyers, Thomas Parrott
 Legal Update – Tara Jenswold
 Metallurgy Failure Analysis – Benjamin Church
 Evaluation CMV Driver Records Logs Status through Smart Phone
Technology & Electronic Logging Systems – Michael Marquardt
 Electronic Control Modules Update – Timothy Austin
 Evaluating Speed through Gear Ratios Examination – Thomas Parrott
 DNA & Trace Evidence – Daniel Campbell, Amy Beatty
 Forensic Pathology – Dr. Michael Stier
 Delta V / Kinetic Energy – Jay Vergowe
 Calculation Closing Velocity – Timothy Austin
 SAE CMV Brake Efficiency – Duane Meyers,Timothy Austin
 Traffic Signals – Joanna Bush
 Cell Phone and GPS downloads – Mark Andraschko

July 2012 Event Data Recorder Use in Traffic Crash Reconstruction
Instructors: Rick Ruth, West Brown
 Event Data Recorder Background
 Bosch Software
 Imaging Methods & Data Retrieval by Back Powering
 Analytical Topics Relevant to EDRs
 Measuring Acceleration and Delta V
 Crash Pulses and Velocity Vectors
 GM, Ford, Chrysler, Toyota, and Honda Specific Data
 Commercial Vehicle EDR
July 2012 Advanced Traffic Incident Management Workshop for Mid Level Managers
Location: Milwaukee County Sheriff Training Academy
Conducted by: Federal Highway Administration
 TIM gaps/needs and identify specific strategies for regional TIM
improvement
 TIM programs in the overall context of safe, efficient highway system
operations.
 TIM National Unified Goals
 Monitoring/measuring TIM performance
March 2012 CDR Operators Analysis & Applications
Instructors: Brad Muir, Jon Northrup
 System Operators Course
 Analysis & Applications Course
June 2011 State Patrol Crash Reconstruction In-Service
 DOT Pavement Friction Testing – Steve Krebs, Mike Malaney
 EDR Update – Will Ryan
 Cellular Phone Investigation – Mark Andraschko
 Practical Testing – TRU
 Total Station Update – Thomas Erdmann, Jason Schwarz
November 2010 Trimble Dimensions 2010 Survey Conference
Location: Las Vegas, Nevada
 New Survey Products
 Laser Scanning
 GPS Mapping
 Trimble Access
October 2010 Advanced Crash Reconstruction
Location: Wisconsin State Patrol Academy – Fort McCoy
Instructors: Dr. Rudy Limpert, Franco Gamero
 Single Vehicle Barrier/Wall Crash
 Two Vehicle In-line Collision
 Two Vehicle Oblique Collisions

 Car – Pedestrian Collisions
 Vehicle Rollover Crashs
 Pre-crash Vehicle Dynamics
July 2010 Vericom VC4000PC Accelerometer Training
Instructors: Richard Jobe
 Basic Physics
 VC4000PC Nomenclature & Operation
 VC4000DAQ Nomenclature & Operation
 Testing & Downloads
July 2010 Advanced Vehicle Dynamics
Instructor: Daniel L. Metz, Ph.D., P.E.
 Steady State Cornering Testing
 Wide Open Throttle Testing
 Transient Cornering Testing
June 2010 Forensic Scene Mapping Using Lasers
Location: Nicolet Area Technical College – Rhinelander, WI
Instructors: Kyle J. Clark, Bobby E. Jones Jr. – IPTM
 Forensic Mapping Concepts
 Operator Safety
 Reflector Techniques
 Instrument Setup
 Accuracy Confirmation Shots
 Mapping Projects
 CAD Techniques
June 2010 Advance Motorcycle Crash Analysis
Instructor: Wade Bartlett, P.E. – Mechanical Forensics Engineering Services, LLC
 Friction & Statistics
 Motorcycle Technology & Post-Impact Inspections
 Motorcycle Dynamics
 Speed from Gear Ratios
 Field Testing
 Momentum & Vector Diagrams
March 2010 State Patrol Crash Reconstruction In-Service
 THC Impairment – State Hygiene Laboratory
 Translational Velocity – Sgt. Duane Meyers, TRU
 Legal Update- Tara Schipper , Department of Justice
 Momentum, PDOF, Thrust, Delta-V – Jeremy Ver Gowe, TRU
 EDR Update, Timothy Austin, TRU
 Mapping Crime Scenes with Multiple Total Stations
o Holly Urbain , Seiler Instrument

o Thomas Erdmann, TRU
o Jason Schwarz, TRU
September 2009 Optics, Lighting, and Visibility for the Forensic Investigator
Instructors: James S. Sobek, P.E., Clearly Visible Presentations, LLC
Kevin T. Johnson, Clearly Visible Presentations, LLC
 Light and Photometry
 Basic Real World Optics
 The Human Visual System
 Light Sources and Atmospheric Influences
 Light Measurement
 Field Applications
August 2009 Advanced Pedestrian/Bicycle Crash Investigation
Instructors: Tony Becker, Institute of Police Technology and Management
Mike Reade, Institute of Police Technology and Management
 Pedestrian/Cyclist Collision Dynamics
 PEDBIKE 2000 Computer Software
 Searle, Appel, and Other Formulas
 Crash Video Analysis: Pedestrian Carry
 Injury Analysis
 Projectile Motion: Fall and Slide
 Field Crash Studies
 Human Factors
June 2009 2009 Midwest Association of Traffic Accident Investigators Conference
Location: Wisconsin Dells, WI
Instructors: Northwestern University Staff
 Pole Impacts
 Electronic Control Module Technology
 Air Brakes
 Crush Measurement Protocol
 Vehicle Dynamics
May 2009 Statewide Traffic incident Management Conference
Location: Wilderness Resort – Wisconsin Dells, WI
 NTIMC Strategic Plan Balance – John Corbin
 TIME Program Update – Brian Rahn
 Emergency Transportation Operations – Rebecca Burkel
 Media Partnerships – Peg Schmitt
April 2009 State Patrol Crash Reconstruction In-Service
 Momentum & Energy Balance – Michael Marquardt
 Critical Speed Yaw on Multiple Surfaces – Jason Schwarz
 Driver Identification Issues – Thomas Parrott
 Vehicle Rollover Investigations – Thomas Erdmann
 Crash Data Retrieval Update – William Ryan and Tim Austin

 Time-Distance Evaluation – Ryan Zukowski
 Online Resources for Transportation Professionals, Pat Casey, Mark
Linsenmayer
March 2009 Vehicular Homicide Conference
Location: Wisconsin Department of Justice – Brookfield, WI
Instructors: John Kwasnoski, - Professor of Forensic Physics
Dr. Dean Hawley - Forensic Pathologist
Patrick Harding - Toxicology Section, WSLH
 Investigation and Reconstruction
 Operator Identification Issues
 Blood Testing Issues in OWI Cases
 Expert Witness Qualification
 Use of Demonstrative Evidence/Exhibits
March 2009 WisDOT Survey & Mapping Workshop
Location: Cedar Creek Lodge – Rothschild, WI
Instructor: Holly Urbain - Seiler Instruments
 Using TSC2 & SC with Geodimeter
 Total Station New Functionality
October 2008 Investigative Photography Methods
Instructors: Ron Groffy - Wisconsin Department of Justice
Scott De Broux - Appleton Police Department
 Exposure Theory
 Lighting Methods and Flash Techniques
 Scaling Evidence
 Imaging Fingerprints
 Footwear, Tire Impression, and Traffic Accident Documentation
April 2008 State Patrol Crash Reconstruction In-Service
 Momentum Review – Duane Meyers
 Pedestrian Crashes – Jason Schwarz
 Crush Analysis – Mike Marquardt
 Crash Data Retrieval Update – William Ryan, Tim Austin
 ECM Downloads – Tim Austin
 Intro to AASHTO, MUTCD, & FDM – Bill Bremer, John Bridwell, Erik
Emerson
 MUTCD Part 6 – Work Zone Traffic Control Technician – Thomas
Notbohm
 Intro to Traffic Signal Engineering – Joanna Bush
March 2008 Wisconsin Association for Identification – 42nd
Annual Education Conference
Location: Raddison Hotel – Wauwatosa, WI
 Taking the Crime Lab to the Crime Scene – Dr. R.E. Gaenssien
 Understanding DNA Evidence – Norman Gahn
 Blood Spatter – Stuart James, Todd Thorne

 Major Case Investigations – Dr. Henry Lee
 DNA at Work – Brian J. Killacky
March 2008 Human Factors in Traffic Crashes
Instructors: Jeffrey W. Muttart – Accredited Traffic Accident Reconstruction
 Driver Perception and Response Times
 DRIVE3 Computer Program
 Driver Cognitive Processes
 Visual Performance
 Effects of Age on Driver Performance
 Effects of Weather on Driver Performance
 Effects of Alcohol, Drugs, and Fatigue on Driver Performance
 Nighttime Performance and Evaluation
February 2008 WisDOT Survey & Mapping Workshop
Location: Hotel Mead – Wisconsin Rapids, WI
Instructor: Holly Urbain – Seiler Instruments
 Scanner Technology
 Trimble VX Total Station
 Scanning with Trimble S6 Total Station
October 2007 Statewide Traffic Incident Management Conference
Location: Paper Valley Hotel – Appleton, WI
 National Unified Goal for Traffic Incident Management – John Corbin
 Incident Debriefing – Doug Dembowski
 Emergency Traffic Control & Scene Management – Scott Nelson
 National TIM & Emergency Preparedness – Jeffrey Western
October 2007 Trimble S6 Robotic Total Station Operational Training
Location: State Traffic Operations Center – Milwaukee, WI
Instructors: Holly Urbain – Seiler Instruments
 Setup, Care and Storage of Unit
 Data Collection Using Various Modes and Functions
 Procedures for Downloading from Data Collector
June 2007 Forensic Mapping with Topcon Total Stations
Instructors: Sergeant Duane Meyers – Wisconsin State Patrol
Trooper Timothy Austin – Wisconsin State Patrol
 Introduction to Topcon Instruments
 Topcon Features
 Pocketzone Data Collection Software
 Practical Exercises
June 2007 Forensic Diagramming with Cadzone
Instructors: Sergeant Duane Meyers – Wisconsin State Patrol
Trooper Timothy Austin – Wisconsin State Patrol
 Advanced Applications in Three-Dimensions

 Assigning 3-D Attributes
 3-D Surfacing
 Introduction to Animation
June 2007 Shooting Incident Analysis and Reconstruction
Location: Dane County Law Enforcement Training Center - Madison, WI
Instructor: Edward E. Hueske - University of North Texas
 Firearms Review
 Shooting Reconstruction Basics
 Intermediate Targets
 Determination of Angle Impact
 Proper Examination and Documentation
 Case Studies
April 2007 Bloodstain Interpretation
Instructor: Donald A. Barker – Institute of Police Technology & Management
Jeffery F. Findley – Institute of Police Technology & Management
 Bloodstain Patterns
 Documentation of Bloodstain Evidence
 Pattern Analysis in Scene Reconstruction
 Blood Detection Techniques
 Lab Exercises
March 2007 Wisconsin Association for Identification – 41nd
Annual Education Conference
Location: Plaza Hotel & Suites – Eau Claire, WI
 FBI/PFI Futures Working Group – Thomas Cowper
 Mitochondrial DNA – Catherine Theisen
 Chia Vang Homicide – John Christophersen, Gary Gillis
 2D/3D Scene Reconstruction & Avery Case Review – Timothy Austin,
Thomas Erdmann
 Trace Evidence – Cary T. Oien
 Digital Image Enhancement – Larry Dow
January 2007 State Patrol Crash Reconstruction In-service
Instructors: Duane Meyers, Ryan Zukowski,Theodore Waite, Trooper Michael
Marquardt, Mark Andraschko, Karl Mittelstadt
 CASS – Cable Safety Systems
 Braking Systems on Commercial Motor Vehicles
 Technical Report Writing
 Photogrammetry – 2D and 3D Applications
 Snowmobile Skid Testing
 Snowmobile Roll Out and Light Meter Testing
 Snowmobile Rider Perception Reaction Time Testing
October 2005 State Patrol Crash Reconstruction In-Service
Location: Wisconsin State Patrol – Fort McCoy, WI
Instructors: DSP Reconstruction Specialists Duane Meyers, Trooper Mark
Andrashko, Steven Prouty, Jim Camp

 Pole Crash Investigation
 G-meter Testing
 Evidence Collection
 Expert Witness Testimony
June 2005 Wisconsin State Crime Laboratory Evidence Technician School
Instructors: Ronald L. Groffy, Chuck J. Cates, Aaron Matson, Robert Snders
 Evidence identification, collection, packaging, sealing and Transmittal
 Photographing Evidence
 Fingerprinting
 Crime Scene Management
November 2004 State Patrol Crash Reconstruction In-Service
Instructors: Duane Meyers
 Total Station Survey Mapping Update
 Crashzone 3D Rendering
 2D Photogrammetry
 Speed Analysis from Gear Ratio
 Practical Exercises in Airborne and Critical Speed Analysis
October 2004 Damage and Energy Applications for Collision Reconstruction
Instructors: J. D. Hudak, W. R. Haight - Collision Safety Institute
 Fundamental Concepts Review
 System Based Collision Analysis
 Energy and Damage
 Standardized Measuring Protocol
 Calculations for Delta-V, Belta–E, and BEV
 Computer Applications
October 2004 Commercial Motor Vehicle Crash Investigation
Instructors: David E. Brill - Institute of Police Technology & Management
 Vehicle Inspection
 Scene Evidence
 Interview Techniques
 Vehicle Dynamics
 Speed Estimates
September 2004 Crash Data Retrieval Certification Course
Instructors: W. R. Haight- Collision Safety Institute
 Terms and Conventions
 Data Interpretation
 Data Limitations

July 2004 REC-TEC Crash Reconstruction Computer Software
Instructors: George Bonnet
 Configuration
 Vector
 Time Distance
 Swerve and Swerve Return
 Critical Turn Away
Instructors: Duane Meyers, Daniel Lonsdorf
 Legal Aspects of PowerPoint Presentations
 PowerPoint Animations in Crash Reconstruction
 REC-TEC Computer Software
 Crush Damage Analysis
 Energy Balance Studies
 Introduction to Photogrammetry – Photomodeler Software
 Crash Data Retrieval System
September 2002 State Patrol Crash Reconstruction In-Service
Instructors: Duane Meyers, Lieutenant Daniel Lonsdorf
 AR98 Pro, Equations on Excel, ARC Network
 Survey Mapping and CAD Drawing
 PDOF and Energy Dynamics
 Airbag Sensing and Diagnostic Modules
 Empirical Testing of Crash Data Retrieval System
 CAD Drawing with Crashzone Program
 Downloads with CDR Software Program
 Attempts at Near Deployment of Vehicle Airbag Systems
 Conversion of Geodimeter 600 Information Through GSP and CAiCE
Software Programs
 Forensic Mapping
April 1999 Geodimeter 600 Instrument Training
Instructor: Holly Urbain – WisDOT Survey Expert
 Setup, Care and Storage of the Geodimeter 600
 Operation of Geodimeter 600
 Procedures for Downloading Data Collector
March 1999 Interview & Interrogation Techniques
Instructor: Douglas E. Wichlander, David E. Zulawski
 Interviewing & Interrogation Techniques

January 1999 State Patrol Crash Reconstruction In-Service
 Crush Analysis
 Crush Measurement Protocol
 Barrier Equivalent Velocity
 Energy-Momentum Balance
 Case Study
December 1998 Applied Physics for Traffic Accident Investigators
Instructor: John Daily, Nathan S. Shigemura – IPTM
 Algebra, Geometry, Trigonometry, Calculus
 Vectors
 Physics Basics
 Center of Mass & Torque
 Work & Energy
 Rectilinear Motion
 Momentum
 Rotational Mechanics
 Uniform Circular Motion
 Falling Bodies & Uniform Projectile Motion
 Tire Forces
 Accelerometers & Skid Testing
 Time-Distance
September 1997 Pedestrian/Bicycle Accident Investigation
Instructor: Michael J. Matuszak, Thomas J. Ryff – IPTM
 Pedestrian Injury Analysis
 Comprehensive Steps to the Reconstruction of Accident Scene
 Pedestrian/Bicycle Practical Projects
 Pedestrian Velocity Studies
 Hit & Run Investigation
 Human Factors & Night Visibility
 Bicycle Accident Reconstruction
 Vehicle Damage Analysis
September 1996 Traffic Crash Reconstruction Course
Location: Wisconsin State Patrol – Fort McCoy, WI
Instructor: Richard W. Parkos, Kermit E. Matyas – IPTM
 Laws of Motion
 Kinetic Energy
 Minimum Speed
 Time, Distance and Motion
 Conservation of Linear Momentum
 Basic Motorcycle Crash Investigation
 Vector Analysis

 Acceleration Testing and Pedestrian Walking/Running Tests
 Formula Derivations
 Critical Speed Formulas /Airborne Formulas
 Airborne Formulas
 Critical Turn Away and Lane Change Formulas
September 1996 Vehicle Dynamics
Instructors: Duane Meyers,Daniel Lonsdorf
 Newton’s Laws of Motion
 Coefficient of Friction and Drag Factor
 Motion Equations: Velocity, Time, Acceleration and Distance
 Speed Estimates – Using Flip/Vault, Fall and Sideslip Equations
 Momentum Collinear (In-line)
 Energy-Energy and Skidding, Kinetic Energy and Velocity Estimates
 Speed Estimates From Skid Marks
June 1996 Motorcycle Crash Investigation
Instructors: Paul H. Olson, Harry C. Walters Jr. - IPTM
 Analyze and interpret motorcycle crash scene
 Determine acceleration and deceleration characteristics of the
motorcycle
 Analyze and interpret operator factors
 Review motorcycle tires, helmets and other equipment
 Analyze and interpret modes of instability related to motorcycles
 Practical application of formulas (Field Project)
October 1989 Technical Crash Investigation Course
 Accident Scene Management
 Preservation of Evidence
 Scene Photography
 Scene Measurements – Baseline and Triangulation
 Crash Investigation Template & Scale Diagrams
 Road Evidence
 Witness Statements and Interviewing
 Basic Crash Formulas and Speed Estimates
 Lamp Analysis
 Field Projects Demonstrating Measurement and Diagramming

Education:
1989 Trooper Recruit Training - Wisconsin State Patrol Academy – Fort McCoy, WI
1989 Police Science – Associate Degree - Waukesha County Technical College –
Pewaukee, WI
1988 Inspector Recruit Training - Wisconsin State Patrol Academy – Fort McCoy, WI
1988 Police Recruit Training - Waukesha County Technical College Police Academy –
Pewaukee, WI
1984 General College Education - Milwaukee Area Technical College – Milwaukee, WI
Guest Lecturer/Instructor/Presenter:
2016 Crash & Crime Scene Reconstruction Case Study – Forensic Mapping Tools
2016 Trimble Dimensions Survey Conference
2016 DNA Evidence Collection if Crash Investigations
2016 Vehicle Homicide Conference
2016 Crash Reconstruction and Traffic Incident Management
2015 Wisconsin Towers’ Association Conference
2015 Enhancing Crash Investigations Trough the Use of New Crash Reconstruction
Technology, 2015 Governor’s Conference on Highway Safety
2015 Special Issues in the Investigation & Prosecution of Rollover Crash Cases
2015 Vehicle Homicide Conference
2014 Integration of Forensic Mapping Tools at Crime and Crash Scenes, Trimble
Dimensions, Las Vegas, NV
2014 Crash Reconstruction & Injury Analysis, Wisconsin Coroner’s and Medical
Examiner’s Association Spring Conference
2013 Courtroom Presentations & Forensic Mapping, 2013 Vehicle Homicide
Conference
2011 Crash Scene Management & Scene Clearance Issues, 2011 Vehicle Homicide
Conference
2011 Forensic Mapping, 2011 Vehicle Homicide Conference
2011 Crash Reconstruction & Evidence Preservation, Wisconsin DOT Traffic Incident
Management Enhancement meetings, 2011 Governor’s Conference on Highway
Safety, Dane County Highway Department In-service training.

2011 Crash Reconstruction Using Survey Instruments, Wisconsin DOT Annual
Surveying User Group training, Madison Area Surveyors Council annual meeting
2010 Working Together to Solve the Crime, Trimble Dimensions – Las Vegas, NV
2009 – Present Crash Reconstruction In-service, Wisconsin State Patrol Academy
2006 – Present Physics of Crash Reconstruction, High Schools & Colleges throughout Wisconsin
2006 – Present Reconstruction Technology, Various locations throughout Wisconsin
2004 – Present Forensic Mapping with Total Stations, Various locations throughout Wisconsin
1997 – Present Basic Crash Investigation, Wisconsin State Patrol Academy
1997 – Present Vehicle Dynamics, Wisconsin State Patrol Academy
1995 – Present Technical Crash Investigation, Wisconsin State Patrol Academy
Additional Specialized Training:
March 2015 Attorney General Summit on Public Safety
Wisconsin Dells, WI
May 2015 Leadership in Police Organizations
North Central Technical College – Wausau, WI
December 2000 Professional Supervisory Development Training
Wisconsin State Patrol Academy – Fort McCoy, WI
September 1999 Background Investigation Training
April 1999 Mobil Data Computer Instructor Training
August 1998 Domestic Drug Highway Interdiction – Florida National Guard
University of Wisconsin – Milwaukee, WI
April 1997 Instructor Development

Certifications:
* Instructor - State of Wisconsin Technical College System Board
* Instructor of Traffic Crash Investigation - Wisconsin State Patrol Academy
* Crash Reconstruction
* Total Station Operator
* Crash Data Retrieval (CDR) System
* Intoximeter Breath Test Operator
* Radar Operator
* Laser Operator
* First Responder
* Law Enforcement Officer - Wisconsin Law Enforcement Standards Board
Publications:
WSP-2012-01 A Comparative Study of Trimble®
Robotic and Non-Robotic Total Stations
Training Manual Total Station Survey Data Collection
Professional Associations:
2009 – Present Midwest Association of Technical Accident Investigators (MATAI)
2007 – Present Wisconsin Association for Identification (WAI)
1988 – Present Wisconsin Troopers’ Association (WTA)

Curriculem Vitae - State Patrol - Erdmann

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