ABSTRACT
A time–distance study is the determination of the times at which one or more objects are positioned at one or more locations or times at which various events occur. A time–distance study is not always requested specifically from the reconstructionist, but it is often used to answer many questions, or provide the technical basis for an animation describing the accident:
Chapter 5 discusses perception/reaction time—an important feature of many time–distance studies. Examples are provided of how to use spreadsheets for the pertinent calculations. Typically, time–distance studies employ constant accelerations, which are used in one of the examples. Occasionally, variable accelerations may be encountered, such as the acceleration of a vehicle under wide-open throttle. An example of such is also provided.
