A Comparison of Devices Used to Measure Vehicle Braking Deceleration 930665
Accident investigators rely on a wide range of methods to measure or quantify vehicle braking deceleration. Generally, this information is applied to define a “drag factor” or “coefficient of friction” for a skidding vehicle. Methods employed can include everything from simple estimations based on past experience and individual expertise to testing using sophisticated devices.
This paper is a compilation of data from a series of skid tests comparing some of the methods and equipment currently available. These tests were performed with an assortment of vehicles each equipped with or monitored by a selection of devices designed/applied to quantify some combination of time, distance and velocity. The devices tested include two models of “fifth wheels,” the Vericom VC2000, the g-analyst, a bumper detonator and shot timer, doppler RADAR, an infrared timer device, and a drag sled. The data from each of these skid tests is then provided for the reader's comparison and analysis.
Citation: J. Eubanks, J., Haight, W., Malmsbury, R., and Casteel, D., "A Comparison of Devices Used to Measure Vehicle Braking Deceleration," SAE Technical Paper 930665, 1993, https://doi.org/10.4271/930665. Download Citation
Author(s):
Jerry J. Eubanks, W. R. Rusty Haight, Russell N. Malmsbury, David A. Casteel
Pages: 28
Event:
International Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Accident Reconstruction: Technology and Animation Iii-SP-0946, SAE 1993 Transactions: Journal of Passenger Cars-V102-6
Related Topics:
Drag
Radar
Tools and equipment
Wheels
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