How many measurements should be taken for each mark in triangulation?

In triangulation during traffic crash investigations, it is essential to take three measurements for each mark to ensure accuracy and reliability in the evidence collected. This method involves creating a triangle to locate points accurately on the crash scene. By taking three measurements, investigators can verify the location of marks against a baseline, reducing potential errors that could occur with fewer measurements. The use of three measurements allows for better triangulation because it provides a more robust data set, which is critical for reconstructing the crash accurately and for any potential legal considerations that may arise. The redundancy provided by the additional measurement helps account for variations and ensures that the data collected is dependable.