Documentation, Collection and Preservation of Footwear and Tire Track Impression Evidence “The Missed Evidence”

The Documentation, Collection and Preservation of Footwear and
Tire Track Evidence (Track Evidence)

This course has been approved by the I.A.I. for certification and re-certification credits.


Class Rules and Guidelines

Class Attire: Casual
Breaks: Usually one short break per hour.
Lunch: One hour
Starting Time: 8:00 A.M
Ending Time: 4:30 P.M
Participation of Students: Requested and appreciated
Required Materials:
  1. Camera: digital, 8MB or larger, detachable flash with minimum 6 foot cord, lens (minimum 55mm),
    shutter release cord or self timer, and tripod
  2. Scales: Must be in millimeters (mm) and at least 300 mm in length
  3. Tape measure: Steel, at least 50 feet in length
  4. Level finders: Used to determine the angle the impression evidence is laying
  5. Ball markers: Will be provided by the instructor
  6. Labels: Used for identifying crime scene information
  7. Media cards
Course Book: Each student attending this training course will receive Mr. Hilderbrand’s book, third edition; Footwear,
The Missed Evidence; a guide to the documentation, collection and preservation for footwear and tire track evidence.
Testing: Oral testing throughout the course, Final examination, Practical casework
Certificates of Completion: Presented at end of seminar

Course Duration

This course is 5-day, 40 hours

Target Audience

This course is designed for those individuals with the responsibility for the documentation, collection and preservation of evidence. This course is also designed for those wishing to begin a career in footwear and tire track impression evidence.

Course Description

This training course is designed to present a series of interactive lectures using PowerPoint and various hands on exercise. This course is specifically designed for crime scene investigators and others involved in the collection and preservation of physical evidence at a crime scene. This course focuses on learning techniques that will allow your agency to greatly improve the documentation, collection and preservation of this critical type of evidence. An effort is made to present the material in a clear, understandable manner using lectures, open dialogs, a little bit of humor and lots of “Hands On” exercises that are all designed to instill confidence at the next crime scene. This course will provide the crime scene investigator with a solid understanding of the proper methods for collecting and preserving a variety of different types of footwear and tire track impressions that should be found at crime scenes.

Course Objectives:


History and Introduction to the Value of Footwear and Tire Track Evidence

Objectives:

  1. To be familiar with how interest and techniques in the use of footwear and tire track evidence has evolved over the years. Know and understand the history of both footwear and tires.
  2. To know the value of footwear and tire track evidence in criminal investigations.
  3. To have a general knowledge in the types of tracks/marks encountered and methods available for their recovery and comparison.

Protection of the crime scene

Objectives:

  1. To assist the student in understanding why this evidence is overlooked at various crime scenes and how to improve the collection and preservation process

Crime Scene Searching

Objectives:

  1. To assist the student in crime scene searching methods as it relates to footwear and tire track evidence
  2. To assist the student in becoming more aware of the four basic methods in recovering footwear and tire track evidence.

Manufacturing Processes for Footwear and Tires

Objectives:

  1. To be familiar with the basic footwear outsole and tire construction methods.
  2. To understand the different types of outsole construction of footwear and the potential importance it could have on the identification process.
  3. To know how design features in footwear outsoles and tire treads are used in comparative examinations.
  4. To understand how manufacturing techniques can contribute in the decision making process of an examination.
  5. To be knowledgeable of the terminology used in describing various aspects of footwear and tires as they relate to the manufacturing process.

Photography of Track Evidence

Objectives:

  1. To understand the importance and correct procedures for correct photographic documentation of track evidence at crime scenes, including the use of various lighting techniques, contrast filters, and using digital hotography both in two and three dimensional.
  2. To understand the considerations and applications of both black-and-white and color photography of track evidence.
  3. To understand the considerations and applications of digital photography.
  4. To understand the theory of and correct procedures for examinationquality photographs of:
    • A depressed (3-dimensional) track
    • A residue (2-dimensional) track on a transparent background
    • The use of oblique light as it applies to (a) and (b)
  5. To practice the techniques associated with taking photographs of footwear and tire track evidence in the laboratory setting.

Introduction to the Enhancement, Recovery and Preservation of Footwear and Tire Track Evidence

Objectives:

  1. To understand the importance of properly searching for track evidence.
  2. To understand and be aware of the various and specialized techniques for the enhancement and recovery of track evidence.

Enhancement of Footwear and Tire Track Evidence

Objectives:

  1. To become knowledgeable of and experienced with different methods for the stabilization, enhancement and development of track evidence, such as:
    • Chemical methods: (Amido Black, Leucocrystal Violet, Hungarian Red, Crowle’s Stain, CA Fuming, Iodine Fuming, Crystal Violet, Physical Developed, Ammonium Thiocyanate, Potassium Thicyanate, etc.).
    • Visualization of trace blood tracks (Luminol and BlueStar)
    • Application of non-blood development techniques (powders)
    • Understanding when stabilization of blood tracks/marks is necessary.
  2. To understand the importance in sequencing processes when using enhancement techniques.

Recovery of Track Evidence by Casting

Objectives:

  1. To understand the various casting methods of recovering and preserving track evidence at a crime scene and in the laboratory.
  2. To know how to prepare and cast both footwear and tire tracks using a dental type stone material.
  3. To have a basic knowledge of the use of Sulfur for casting impressions in snow
  4. To have a basic understanding on how to casting footwear or tire track evidence in water.
  5. To understand why a dental type stone material, not plasters or plaster of Paris, is recommended for the casting of footwear and tire track impressions.

Legal Considerations and Courtroom Testimony

Objectives:

  1. To know the proper foundation for acceptance as an expert witness in the area of footwear and tire track examination.
  2. To be able to effectively present testimony in the area of footwear and tire track examinations and identifications.
  3. To know the different ways to prepare footwear and tire track evidence foruse as demonstrative evidence in a court of law.