page_title: Traffic collision reconstruction
section_title: Law enforcement / police agencies
hierarchical_section_title: Traffic collision reconstruction / Law enforcement / police agencies
caption_attribution_description: English: Toronto Police CRU vehicles at the scene of a large accident in North York in 2014
context_page_description: Traffic collision reconstruction is the process of investigating, analyzing, and drawing conclusions about the causes and events during a vehicle collision. Reconstructionists conduct collision analysis and reconstruction to identify the cause of a collision and contributing factors including the role of the driver, vehicle, roadway and general environment. Physics and engineering principles are the basis for these analyses and may involved the use of software for calculations and simulations. Collision reconstruction is sometimes used as the basis of expert witness testimony at trials. Collision reconstructions are typically performed in cases involving fatalities or personal injury. Results from collision reconstructions are also sometimes used for making roads and highways safer, as well as improving safety aspects of motor vehicle designs. Reconstructions are typically conducted by forensic engineers, specialized units in law enforcement agencies, or private consultants.
context_section_description: The Royal Canadian Mounted Police utilize full-time Forensic Collision Reconstructionists and Analysts as a service line.  In British Columbia, they are referred to as ICARS (Integrated Collision Analysis and Reconstruction Service). ICARS units are located in each RCMP District within the Province of B.C.
  California Highway Patrol utilize a team deployment called MAIT ("Multidisciplinary Accident Investigation Team"). Each team consists of inspectors with specialized training in traffic collision reconstruction, traffic engineering, automotive engineering, and vehicle dynamics. MAITs are composed of one CHP sergeant (the team leader), two or more CHP officers, one Motor Carrier Specialist I (MCS I), and one Senior Transportation Engineer from Caltrans.
caption: Toronto Police CRU vehicles at the scene of a large accident in North York in 2014
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