Please note: 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.

Research

Bosch CDR Tool Supported Vehicles Database
Use this database to determine whether or not data can be downloaded from your vehicle.

VIN Decoder
Enter a vehicle's VIN to retrieve year, make, model, and other information.

Calculators

Minimum Speed Calculator
Determine the minimum speed for a vehicle before braking when the skid distance and coefficient of friction are known.

Distance to Stop Calculator  
Determine the minimum distance needed for a vehicle to stop when the initial speed and coefficient of friction are known (assuming 1.5 seconds perception/reaction time).

Braking Distances Online Chart | PDF Version
Determine the minimum distance needed for a vehicle to stop when the initial speed and coefficient of friction are known.

Speed from Pedestrian Throw Calculator
Determine the minimum speed for a vehicle when a pedestrian's height and throw distance are known.