Accident Investigation for the Patrol Officer seminar     16 - hours       $149.
This course is designed to provide basic skills and a through overview of the knowledge and skills to apply advanced tactics, techniques procedures and critical factors in an effective accident investigation.

In-Depth Accident Investigation     40 - hours                                    $449.
This course builds investigative techniques and will arm you with the necessary skills to conduct a thorough traffic crash investigation and properly document your findings for courtroom presentation.

Discover proper procedures for measuring, scale diagramming, and photographing in order to record physical evidence and essential facts available only at the crash scene.  You will learn the fundamentals of mathematics, physics and engineering as they pertain to crash investigations and the proper mathematical equations to apply for the type of crash being investigated.  Finally, you will learn to analyze the information to determine what happened before, during, and after the collision.

  • Identify and assemble necessary investigative equipment
  • Identify the types of vehicle damage and debris and their importance in the investigation
  • Identify roadway markings and the use of these items as evidence
  • Determine drag factors & how they relate to speed determinations
  • Use of algebraic and mathematical formulas to arrive at simple and complex speed estimates
  • Grade and super-elevation determinations and how they affect drag factors
  • Field sketching and measurements
  • Scale drawings and their importance
  • Speed estimates from Yaw marks and Radius determinations
  • Time and distance relationships
  • Interviewing
  • Photography
  • Outside exercises

Advanced Accident Investigation  (Reconstruction)    80-hours            $799.
This course is designed to provide the on-scene accident investigator with the knowledge, skills and abilities to apply advanced tactics, techniques, procedures, and critical factors in an effective accident investigation giving the participant the skills to reconstruct the crash.

  • Pretest evaluation & Problem Identification
  • Investigator Tools
  • Levels of Investigation & Damage & Debris
  • Marks on the road identification and interpretation
  • Using calculators & Accident Investigation Math
  • Finding Drag factors and grades & faulty brakes
  • Drag sled construction exercise 
  • Finding grade and super-elevation exercise
  • Speed estimates
  • Speed estimates over Consecutive Surfaces
  • Speed estimates over Simultaneous Surfaces
  • Combined Speeds
  • Field Sketching, Symbology and Scale Drawing
  • Scale drawing exercise
  • Photography
  • Reaction time & Speed/Velocity Conversions
  • Motorcycle accidents

Please email or call for more information.
Ed Johnston is an accident re-constructionist with over 25-years of law enforcement and training experience.  He trains accident investigation on a national and international scale.
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Richard Whitehead 
Professional Public Safety Services
& Associates LLC