Research Notice
Due to the sensitive nature of criminal/civil investigations, it is often not possible to disclose casework materials. If you are in need of a sample set of crime scene footwear/tire impressions or associated images for research purposes, you may contact the SWGTREAD Research Committee Chair Gary Hauptmann ( This email address is being protected from spambots. You need JavaScript enabled to view it. ). Members of SWGTREAD may be able to assist you in creating a suitable substitute for your research.
DRAFT STANDARD POSTED FOR COMMENT
The following draft standards were posted on 04/07/12 for public comment:
- Standard for Expressing Conclusions for Footwear and Tire Impression Examination
- Standard for Carrying Out a Comparison Method Validation Study
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Tires
Make and Model Tire Frequencies on Vehicles
- Parent Category: Recommendations for Research
- Category: Tires
Investigate the likeness of tire designs on vehicles.
Frequency of Randomly Encountering Track Measurements
- Parent Category: Recommendations for Research
- Category: Tires
Determine the probability of encountering a vehicle with the same track measurements (i.e., track width and turning diameter) as found at a crime scene.
Effects of Tire Deflection on Casting and Known Standards
- Parent Category: Recommendations for Research
- Category: Tires
Tire deflection is a known and reproducible effect which may confuse some examiners when analyzing long sections of tire impressions to known standards such as inked prints. Include definition of deflection (i.e., industry source, engineering paper).