Skid Speed Calculator
Click here for the
METRIC Skid Speed Calculator
This calculator is provided without
warranty or applicability to any specific
situation. Do not use the results of this calculator in any legal
proceedings or insurance claims actions. It is not a substitute for a speed analysis by a
qualified traffic accident reconstructionist.
Contact us if you need assistance.
Select the surface
type.
(Default is Asphalt)
Select condition, wet or
dry.
(Default is Dry)
Enter the grade in percent.*
%
Use 0 (default) if unknown.
Use negative ( - ) for a downhill skid.
Example: 2.5% downhill = -2.5
Enter the length of the skid.
feet
The result will appear in a new window. The form will reset to the
default values after each calculation.
* Percent value for grade if the angle
in degrees is known:
Level = 0%
1.0� =
1.74%
grade
2.0� = 3.49%
grade
3.0� = 5.24% grade
4.0� = 6.99% grade
5.0� = 8.74%
grade
6.0� = 10.51%
grade
7.0� = 12.27% grade
8.0� = 14.05% grade
