Accident Investigation Calculator

Overturning on a bend

Fill in the first 5 boxes below and click on the Calculate button to see the answers in the last 2 boxes.

Caution: These calculations assume that the vehicle is rigid. Load movement, particularly in tankers, and the vehicle suspension charactaristics will affect the outcome. If the vehicle is predicted to skid sideways rather than overturn, an overturn will occur when the wheels come up against some obstacle such as a kerb.


The equation used is as follows:

Track width of vehicle (metres):

Radius of vehicle path (metres):

Height of centre of gravity (metres):

Crossfall in degrees, positive when favourable (degrees):

Coefficient of friction:

Speed for vehicle overturn:

Skid and not overturn?


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