A.D. Tupper & Associates Limited

Evaluation of Vehicle Speed

After the collision and the pre and post impact paths of the vehicles, have been located, physics and engineering principles are used to determine the speeds of the vehicles at and before the POI, and to show what happened immediately before the point of initial impact.

Determination of the pre impact vehicle speeds can usually be conducted with one or more of the following methods:

Braking/Speed from Skid marks

Centrifugal Force Analysis/Critical Speed

Momentum Analysis

Damage/Energy Analysis

Launch, Fall or Vault Analysis

Once the vehicle speeds are established, a time distance analysis can be conducted, and used to show the available lines of sight of one or other of the drivers at material times.