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Skid marks from aircraft tires on a runway. A skid mark is the visible mark left by any solid which moves against another, and is an important aspect of trace evidence analysis in forensic science and forensic engineering. Skid marks caused by tires on roads occur when a vehicle wheel stops rolling and slides or spins on the surface of the road.
When performed in the snow, it is more often done to have fun than it is to make an earnest attempt at creating the circular skid mark pattern. [citation needed] In Australia, doughnuts performed in dust or mud are colloquially referred to as "circle work". Performing the doughnut maneuver can be hazardous.
Witnesses are interviewed during collision reconstruction, and physical evidence such as tire marks are examined. The length of a skid mark can often allow calculation of the original speed of a vehicle for example. Vehicle speeds are frequently underestimated by a driver, so an independent estimate of speed is often essential in collisions.
Forensic tire tread evidence records and analyzes impressions of vehicle tire treads for use in legal proceedings to help prove the identities of persons at a crime scene. ...
An important aspect is the analysis of trace evidence such as skid marks on exposed surfaces, where contact between dissimilar materials leaves material traces of one left on the other. Provided the traces can be analysed successfully, then an accident or crime can often be reconstructed.
"Witness marks" are also an important form of trace evidence, especially in engineering and may be critical in understanding how a product failed. A typical witness mark could be an impact depression which broke a product. It is especially useful if that mark can be linked to the product which made the impact such as a hammer or nail.
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Skid mark, a mark left by the skidding of an object, often a tire Tread Marks , a tank combat computer game TreadMarks , distributed shared computer memory system