What is vital when measuring distances at a crash scene?

Using measuring tape and noting all measurements accurately is crucial when measuring distances at a crash scene because precise measurements are necessary for reconstructing the events leading up to the crash. Accurate distance measurements help investigators determine factors such as the position of vehicles, tire marks, and the distance from point of impact to other significant locations. These details are essential in understanding the dynamics of the crash and the actions of the drivers involved.

Relying solely on visual assessment is not reliable, as human perception can often be misleading and subject to error. GPS technology, while useful in various contexts, may not provide the precision needed for specific measurements at a crash scene due to factors such as signal accuracy and obstructions. Although observing nearby traffic can be important for situational awareness, it does not contribute to the accuracy of physical measurements needed for a thorough crash investigation. Thus, the best practice involves using measuring tape to ensure all distances are recorded with precision.