Evidence a Reconstruction Expert May Review
A collision reconstruction expert may review several types of evidence to evaluate how a collision occurred. The evidence available — and the conclusions that can be reached — depend on the specific collision. Reconstruction is based on the evidence that exists, not on assumptions about what should be present.
Roadway Evidence
Roadway evidence may include skid marks, yaw marks, gouge and scrape marks, debris patterns, roadway geometry, surface conditions and the status and timing of traffic-control devices. This evidence can help evaluate vehicle speeds, paths of travel and the factors that contributed to the collision.
Vehicle Evidence
Vehicle evidence may include damage patterns, crush depth, contact patterns, structural deformation and the resting positions of the vehicles. Vehicle damage can help estimate the energy involved in a collision and the change in velocity (Delta-V). The condition of the vehicles after a collision is an important part of the analysis.
Electronic Data
Electronic data from supported event data recorders (EDR), airbag control modules (ACM) or commercial-vehicle systems such as the ECM and ABS module may provide additional information. Not every vehicle contains recoverable electronic data, and the data each vehicle records varies by manufacturer, model and year. Retrieval is a separate step from interpretation.
Scene Documentation and Visual Evidence
Scene photographs, drone documentation, 3D scans, witness statements and available video recordings can all contribute to a reconstruction. Visual evidence helps establish the conditions at the time of the collision and can preserve information that physical evidence alone may not capture.
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Collision ReconstructionQuestions We Address
What evidence does a reconstruction expert review?
A reconstruction expert may review roadway evidence, vehicle damage, electronic data from supported EDR or ACM modules, scene photographs, drone documentation, 3D scans, witness statements and available video. The evidence reviewed depends on what exists for the specific collision.
Can a reconstruction be performed without all evidence types?
Yes, but the conclusions may be more limited. Reconstruction is based on the evidence that exists. When some evidence is missing, the reconstructionist can often still reach conclusions, but they may be less precise or more qualified. The available evidence determines the scope of the analysis.
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For collision reconstruction assignments, vehicle-data questions, or expert-witness availability, contact our office directly.