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    Distance to Stop Calculator
Disclaimer: These online calculators should be used to derive "first approximations" only. They are provided free-of-charge and are intended to give you estimates only. They do not take into account many variables which a reconstructionist would need to evaluate in order to perform a proper accident reconstruction. McNally & Associates ARS, LLC in no way supports data derived from these calculators.

Enter Initial Speed of Vehicle
(in MPH)

Enter Friction Coefficient
(unless known, enter 0.75 for a dry road or 0.55 for a wet road)


Calculated Minimum Stopping Distance (in feet)
(assuming 1.5 seconds of perception/reaction time)

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