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Paint Data Query
Overview Developed by Forensic Laboratory Services (FLS), the database represents 30 years of accumulated information provided by automotive companies and samples of vehicles submitted by other forensic laboratories or police. The PDQ contains information about the make, model, year, and assembly plant for many vehicles. The PDQ is used by forensic laboratories around the world to assist with criminal investigations requiring vehicle identification. FLS maintains the database so that forensic laboratories can provide timely and effective The PDQ is one of the most collaborative ventures to be found in forensic science. Accredited users are given a free copy of the PDQ in exchange for submitting 60 new automotive paint samples per year. The paint samples are collected from vehicles at body shops or junk yards, as well as from automobile manufacturers. Contributors to the PDQ include the RCMP, provincial forensic laboratories in Ontario and Quebec, 40 American forensic laboratories, and police agencies in 21 other countries. How it Works Paint samples provided by automotive manufacturers are analyzed by their chemical composition. The chemical components and proportions are coded into the database. An automotive paint job usually consists of four layers. These known paint samples are then available for comparison against paint samples taken from a crime scene or from suspect vehicles. The PDQ team samples each paint layer with scalpels and microscopes to determine the spectra and chemical composition of the paint chips. The PDQ serves to narrow the search for vehicles to enable further investigation. Once a suspect vehicle is located, the comparison of paint from the crime scene with paint of the suspect vehicle can be conducted to match the vehicle more conclusively to the crime. |
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