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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.
[1] This feat earned a place in the Guinness Book of World Records for longest skid marks. Spirit was recovered and taken to the Museum of Science and Industry in Chicago as an exhibit. Spirit of America also left the ground for the longest distance ever recorded for a ground-based vehicle, when it hit rough ground at the end of the run ...
Braking distance refers to the distance a vehicle will travel from the point when its brakes are fully applied to when it comes to a complete stop. It is primarily affected by the original speed of the vehicle and the coefficient of friction between the tires and the road surface, [Note 1] and negligibly by the tires' rolling resistance and vehicle's air drag.
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.
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.
Two cars were prepared for the endurance speed runs on a five-mile banked track in Texas. [16] The shattered records included a Class C AMX (the No. 2 Lee Breedlove car) with the standard 290 cu in (4.8 L) AMC V8 engine (bored to 304 cubic inches) with a 4-speed manual transmission, achieving a 24-hour average of 140.79 mph (226.58 km/h) that ...
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 automobile skid is an automobile handling condition where one or more tires are slipping relative to the road, and the overall handling of the vehicle has been affected. Subtypes of skid include: fishtailing, where the vehicle yaws back and forth across the direction of motion. spin or spinout where a vehicle rotates in one direction during ...